User Manual - Contemporary Controls
Contents
1. e eeeeeeeeeee eere ecce 12 Configuring the Port Transceiver in Software e eeeeeeeeeeeeeeeeeee eee 1 3 Configuring the Data Rate L Configuring the Filter Configuring the Device Number 14 Configuring ooo eroe strae epo rrr aen ea dev aeu eua erra lO Specifying Triggers in Packet Frame 18 TD000700 0ME 2 6 1 6 2 6 2 1 6 22 6 3 6 3 1 6 3 2 6 3 3 6 4 6 4 1 6 4 1 1 6 4 1 2 6 4 2 6 4 3 6 5 6 5 1 6 5 2 6 6 6 6 1 6 6 2 6 6 3 6 6 3 1 6 6 3 2 6 6 3 3 6 6 3 4 6 6 3 5 6 6 3 6 6 6 4 6 6 4 1 6 6 4 2 6 6 4 3 6 6 5 Using ARCNBET An lyzer iunc 20 Starting ARCNET Analy2er 20 LED TT 20 PO Wer LEDS Usr M 20 Data Bliss M iM UU 20 Adjusting Signal 1 eot ko rase E ar se Yi te Eno E No ease EY 21 Coaxial Signal Receiver Sensitivity R92 eese eene 21 EIA 485 Signal Receiver Sensitivity R50 eee eene nnne 21 Isolated Trigger Sensitivity R84 21 The Mam Display 22 Display NIOUES psi addi 22 Normal Mod P 22 Scroll 22 ies Tata ires RE 23 Captured2. Figure 11 The Trigger Display Clicking the Insert button in Figure 11 will cause the following to appear NOTE The number base in which the values are displayed hexadecimal or decimal can be chosen under the View Menu In Figure 12 the values are shown in hexadecimal Offset Value No Match Source ID ri Desina oniD Packet Length 1 1FC 68 s Packet Long E C Short C AND Figure 11 The Trigger Menu TD000700 0ME 16 The Type selection displayed in Figure 13 below provides a drop down list of 6 frames from which to choose Two of the types ITT and FBE have only one setting to be configured Destination ID Three types ACK NAK and ERR have no settings at all Packet settings are only available if Packet PAC is the chosen frame type Trigger Settings Packet Data Type Invitation To Transmit Offset Source ID Free Buffer Enquiry Acknowledement Destination Negative Acknowledgement 4 Packet PAC Packet Let Error ERR Figure 11 Frame Types Settable in Trigger Settings Window In Figure 14 buttons on the left side of the window affect individual lines of the display Each line specifies only one frame but a frame specification may contain more than one trigger A trigger
3. ARCNET Protocol Analyzer User Manual TD000700 0ME CONTEMPORARY CONTROLS 3 3 1 3 2 3 3 3 4 3 5 3 6 4 4 1 4 2 4 2 1 422 42 4 2 3 1 4 2 3 2 4 3 5 5 1 5 2 5 3 5 4 5 5 5 6 5 6 1 Table of Contents PVF ODUCT OM Overview Of ARCNET O tH aW ed n wet e we Host Computer Minimum Requirements ecce eee ee eee eee eee een aae e eee ene Pay SiC abs ep El ical ru BH 62 EEROEIURRENRERSROSTECRTETM 7 7 7 tal 7 7 7 Complidnee aee oe RERO NIRE QURE QUAERE MI TON ON Installing ARCNET Analyzer Component LIS ceca ee tie er a EEA EEEE EUR ERAN REPE Installation of Hardware 9 Connection to Power eie tea ipi te tio ias esee ideis 9 Connection to the Host Computer teni 9 Connection to th Fieldbus pea Epiat 10 Connecting to ieran hi ae heh ee ul eed 10 Connecting to Twisted Paite 10 Installation Of Software ssseoossseooossseosssseoossseesssssosssssessssseosssseesssssesssssesssssesssss LL Configuring ARCNET LD Configuring the Port Transceiver in Hardware
4. 0000000 9109600 FBE 0000000 9109900 0000000 9110100 9 CO 150 F9 FA FC FD FE FF 00 01 02 03 04 05 Figure 11 Features the Data Window It is usually the case that the length of a data packet is so great that only the first dozen or so bytes can be shown and the remainder cannot be presented on the Main Display To view the entire packet select highlight the packet line in the Main Display then double click it to open a Details window such as the one pictured in Figure 20 on the next page TD000700 0ME 23 Captured Packet Detail The vertical scroll bar present in Figure 20 below allows the examination of all packet contents both as Raw Data on the left and as ASCII Data on the right The window is mostly self explanatory in the way that it displays the Source ID Destination ID and Packet Length The System Code field is discussed below and is further illustrated in Figure 21 and Figure 22 on the next page Details x Source ID Destination ID Packet Length System Code 9 co C6 4D Raw Data ASCII Data Figure 11 Captured Packet Detail In some ARCNET traffic a System Code is used In other cases it is not Within a given PAC frame ARCNET Analyzer can treat the data as having a System Code or not having one As explained below this depends on whether or not the Options No System Code item in the drop down menu has been checked On the next page examine Figure 21 carefully Thi
5. After the Settings Menu has been configured for Data Rate Port Filter and Device Number click OK to download the configuration data to RAM in the USB Module The process will take about ten seconds At start up the user must specify a choice in every option column of the Settings Menu to initialize RAM with the configuration data Unless all 3 columns have options selected one or more of the following prompts will appear Analyzer Analyzer Analyzer Select DataRate Select Port Select Filter Figure 9 Settings that Must Be Specified at Start Up Until all settings are satisfied program execution will not proceed beyond the Settings Menu and one or more of the prompts of Figure 9 will continue to demand attention Configuring Triggers The ability to trigger the capture of data is a prime feature of ARCNET Analyzer and offers great diversity in how data is captured and the nature of data acquired dit Miew Options Help Itis possible to operate ARCNET Settings Analyzer without triggers simply mes observing network traffic This may be d m A Normal Mode useful to confirm that traffic is occurring eril Made but usually it is more desirable to specify a N 0 System Code particular trigger or set of multiple triggers 1 ng Triggers are of two types Figure 10 Accessing the Trigger Menu A signal trigger employs the occurrence of some signal voltage to begin the capture of data T
6. operating on input voltages ranging from 100 VAC to 240 VAC supplies 5 VDC to the USB Module by means of a power cord which plugs into the 5 VDC Power Jack located in red in Figure 2 ARCNET Analyzer USB A RSTO RC DETECT Figure 1 Power and USB Connections Connection to the Host Computer One end of USB Data Cable should be attached to an available USB port on the host computer the other end should be plugged into the USB Jack located in blue in Figure 2 Once this connection has been made the USB Module if properly powered will be detected immediately At this point Windows will prompt for a driver from the CD After satisfying the Windows prompts the USB Module will be ready for use A reboot will not be needed to begin ARCNET Analyzer operation is recommended that the USB Module connect directly to a USB port on a PC The USB Module should not be connected to a hub TD000700 0ME 9 Connection to the Fieldbus ARCNET Analyzer is provided with four connectors allowing attachment to networks that are wired with either coaxial or twisted pair cable The default impedance of each connector is the proper value for ARCNET Analyzer to attach to the network as a bus device If the ARCNET Analyzer occupies the end of a segment proper termination must be added so that the port impedance matches the characteristic impedance of whatever type of cabling is in use Termi
7. x can be either 1 or 2 When this DOS command is run ARCNET Analyzer will launch and begin operating automatically using the configuration last stored in its ana cfg file The program will capture data continuously Whenever the data buffer reaches capacity its content will be saved to the same folder from which ARCNET Analyzer is run in a CSV file with a filename which is incremented using this format anaNN csv If the command is analyzer 1 NN is an incremental number in the range 1 100 If the command is analyzer 2 NN an incremental number in the range 1 4294967296 Caution If ARCNET Analyzer is not stopped before saving file anaMAXCOUNT csv previously saved files will be overwritten This is because after the highest numbered CSV is saved the file counter resets to 1 At this point the next file saved will be 1 and each new saved will overwrite an existing file of the same name Note Before executing the DOS command ARCNET Analyzer must have been run at least once in normal mode This is needed e Configuration file not found E xiting Application to specify a configuration and cause the ana cfg file to be created If ana cfg has not been created this error will result Analyzer TD000700 0ME 38 Error Messages 254 255 and 256 are data byte exception packets Enter another packet length Auto Restart and Manual Trigger cannot be used at the same time Cannot Load USB P
8. 1 R50 R84 Adjusts R92 Adjusts Enables Figure 11 User Adjustments Isolated Trigger Coax Transceiver R92 Sensitivity Sensitivity TD000700 0ME 21 Figure 18 illustrates the circuitry for trigger inputs applied to J3 Isolated trigger inputs are applied to pins 1 2 and non isolated trigger inputs to pins 3 4 R84 _ 500 33V R47 PS25051 GND Q2 3904 EXTERNAL INPUTS Figure 11 Trigger Input Circuitry GND The Main Display Display Modes During data acquisition the user can toggle between two display modes at will Normal and Scroll described below Normal Mode Normal Mode is invoked via the Options Normal Mode menu selection In this mode initial data will be displayed while additional data capture proceeds in the background After data acquisition is ended final captured data will be displayed and the Analyzer State will report Capture Complete Scroll Mode Scroll Mode is invoked via the Options Scroll Mode menu selection When this mode is invoked an inactive Pause button will appear beneath the display window Once data acquisition is started the display will scroll to show real time data as it is captured The Pause button will also become available for use Clicking the button will pause the display as data capture continues in the background Another click of the button now labelled Resume will display the data that is currently being captured It does
9. ARCNET control and information frames and stores them for later retrieval and analysis Both normal and packed data modes are supported The USB Module is the physical device which communicates with the host computer through one USB port while employing an embedded Intel 386 to process all ARCNET control and information frames captured from the LAN Acquired data is stored in 512 kB of onboard RAM and may be exported to disk in a data file for subsequent off line analysis Fieldbus connectors are available for coax twisted pair and both AC and DC coupled EIA 485 communication Traditional coaxial cable is coupled through a BNC connector Connectors for twisted pair and EIA 485 communication include two RJ 11 jacks to facilitate daisy chaining and one terminal for attaching wires with screw connectors Controls are provided for optimizing transceiver coupling and LEDs indicate the various operational states or the occurrence of a hardware error A screw connector offers a choice between an optically isolated or a non isolated input of an external signal for initiating data capture The Software Module displays either real time captured data or frames that have been previously acquired saved and retrieved for analysis Data capture is controlled by GUI options for data rate protocol filter and trigger criteria All standard data rates up to 10 Mbps are supported and are selectable through a convenient pop up menu Every captured fram
10. Data 0000000 00 0000000 010 0000000 010 0000000 010 0000000 010 0000000 011 0000000 010 0000000 010 0000000 010 of ap 91 92 93 94 95 111 x System Code zo 30ul PackedMode Start Figure 11 No System Code Option Activated ARCNET Analyzer File Edt View Options Help Settings TimeStamp Trigger Captures Messagelndex Trigger Position Find Absolute v Normal Mode C Relative Scroll 15565 26 0 No System Code C Up Search Auto Restart C Down Time Stamp DID Length SC Data 0 507 Bytes Packet Length Sustem ASCII Data o wW 1 TD000700 0ME 25 Operating Modes Auto Restart Mode If the user wishes to run a data capture session repeatedly Auto Restart can be invoked from the Options Auto Restart menu selection In this mode data capture proceeds until the Capture Buffer is full At that point the acquired data is cleared and a new data capture session is begun Packed Mode When traffic conditions are heavy data storage may become an important issue Checking Packed Mode will v Packed Mode L compress data for more efficient data storage Another useful feature of this mode is its ability to measure the duration of an error frame ERR which could be due to a reconfiguration burst or electrical noise Comparing this value with the known length of a RECON burst listed in Sec
11. Ele Edt View Options Help TimeStamp Absolute Relative Analyzer State Captures Message Index Trigger Position Find Capturing Data 15565 7681 7683 Time Stamp s T Type SID DID Length SC Data 0 507 Bytes 9109600 co 0000000 9109900 ACK 0000000 9110100 9 CO 150 F9 FA FC FD FE FF 00 01 02 03 04 05 0 0000000 9125400 0000000 9152500 0000000 9152800 NAK 0000000 9153500 0000000 9153800 NAK 0000000 9154600 0000000 9154900 0000000 9155600 0000000 9155900 0000000 9156700 0000000 9157000 0000000 9157800 0000000 9158100 0000000 9158800 FBE 0000000 9159100 0000000 9159900 FBE 0000000 9160200 0000000 9160900 Trigger Position Packed Mode Clear Manual Trigger Pause Top Bottom Stop Trigger 2 List External Manual Packed Mode compresses Pause data Trigger can be set Trigger data Trigger withan Trigger high volume traffic data for display while to occur at the top containedinan external device mouse click more efficient storage data capture centre and bottom ARCNET frame continues of captured data Figure 1 Main Display TD000700 0ME 6 Specifications Host Computer Minimum Requirements Processor Pentium 90 MH
12. Time Stamp s T Type SID DID Length SCZ Data 0 507 Bytes 9109600 FBE 0000000 9109900 ACK 0000000 9110100 9 CO 150 0000000 9125400 F9 FA FB FD FE FF The top line of the current window is the Message Index which indicates how many frames separate the current window from the beginning of the buffer The Message Index advances each time the display scrolls Waiting for Trigger This state exists only if triggers are in use If a trigger has been defined and a trigger type specified then clicking the Start button will begin data capture and invoke the Waiting for Trigger state When the trigger occurs an asterisk identifies its line position Also just above the data display the Trigger Position is reported In the example shown above the Trigger Position 7683 is two lines below the Message Index 7681 TD000700 0ME 29 Trigger Found Capturing Data How data is treated in response to a trigger depends on the Trigger Position selected If Top Position is chosen the top of the Capture Buffer stores the trigger frame and data capture continues until the buffer is full When Centre Position is selected the buffer has captured data before the trigger event and continues to do so until the end of the buffer is reached If Bottom Position is in use data acquisition will end with the arrival of the trigger so the Trigger Found Capturing Data state will not occur Capture Stoppe
13. is any functional element in a line For example the 3 frame Figure 14 contains 3 triggers PAC SID and DID As triggers are set their number is reported by Triggers made z above the detail display Up to 16 triggers may be set The Insert button allows the user to specify a trigger The Delete and Modify buttons affect only the selected highlighted frame specification The Indent button does more than simply indenting the selected frame The Indent function binds the indented frame to the one immediately preceding so that the two frames must occur adjacent in time for the trigger combination to work Example The 5 specification DID 3 in Figure 14 must occur immediately before the following ACK or no triggering occurs Once the entire set of specified triggers have occurred ARCNET Analyzer is triggered If the entire trigger specification is not satisfied a trigger is missing or indented frames are not adjacent in time then ARCNET Analyzer will not trigger Trigger x Maximum triggers is 16 Triggers made 16 ITT DID 1 inen FBE DID 2 SID 1 DID 2 Delete ITT DID 2 _ PAC 510 2 DID 3 ACK Figure 11 Trigger Screen Features TD000700 0ME 17 1 1 1 Specifying Triggers in a Packet Frame The PAC frame type allows several triggers in the frame specification In the example depicted in Figure 15 the Source ID is 1 the Destination ID is 2 the Packet Length is 150H byt
14. the port for data capture The switch bank is accessed by removing the cover of the USB Module and is located near the fieldbus connectors Each illustration in Figure 5 below depicts the settings needed to specify the port transceiver option printed to left of each switch After setting the DIP Switches for the desired transceiver option the USB Module is configured and the cover may be replaced Transceiver DIP Switch Settings Coax 23 Twisted Pair 485 485 gt Figure 5 DIP Switch Settings for Specifying the Port Transceiver TD000700 0ME 12 Configuring the Port Transceiver in Software Under Windows select ARCNET Analyzer the Start Programs menu structure The Main Display will appear To configure the Software Module the USB Module must be powered and connected to the Host Computer with the USB cable After the Main Display appears select the Options Menu As shown below the Normal Mode is activated by default but it is of no concern at this time Choose the Settings option as illustrated in Figure 6 below File Edt View Options Help Settings _ Trigger Normal Mode Scroll Mode No System Code Auto Restart Figure 6 Accessing the Settings menu TimeStamp Absolute Relative Captures Mess 14 Time Stamp 5 Data Rate Port Filter C 10 Mbps C Coas TP C 5Mbps C ElA 485DC FBE C 25
15. to 6 offset value parameter pairs None TD000700 0ME 35 Abbreviations Used This Manual ACK ARCNET CD DID ERR FBE FIFO ID ITT LEN LP NAK PAC PCI RAM SC SID SP USB Acknowledgement of frame Attached Resource Computer Network Compact Disk Destination Identifier Error Free Buffer Enquiry for frame First In First Out Identifier Invitation To Transmit frame Length of Packet Long Packet Negative Acknowledgement of frame Packet Personal Computer Interface Random Access Memory System Code Source Identifier Short Packet Universal Serial Bus TD000700 0ME 36 Hot Keys Used by ARCNET Analyzer Hot Keys are not case sensitive Key Description Ctrl O Load a Data File Ctrl S Save to Log file Alt F File menu AIt E Edit menu reserved for future use Alt V View menu Alt P Option menu Alt H Help menu File Extensions Used by ARCNET Analyzer Extension Type of File AAD ARCNET Analyzer Data CFG ARCNET Analyzer Configuration CSV Comma Separated Variable DLL Dynamic Link Library INF Driver Setup Information SYS Driver Data Rate Considerations As shown below at some data rates only certain transceivers are usable Also the Time Stamp interval and the duration of a RECON burst vary with the Data Rate Data Rate Usable Transceivers Time Stamp RECON Interval Burst Duration 10 Mbps 2 5 us ms 0 689 EIA 485X TP EIA 485X TP EIA 4
16. 85X EIA 485X 5 508 1 377 2 754 11 016 22 032 44 064 TD000700 0ME 37 Using Multiple Instances of ARCNET Analyzer Up to 5 USB Modules each controlled by its own instance of ARCNET Analyzer can capture data simultaneously from a single computer In the Settings window the Device Number specifies which USB Module will be controlled by the current instance of ARCNET Analyzer This value refers to the unique USB Device Number assigned automatically by Windows when multiple USB devices are attached to the computer If no number is chosen a default of 0 causes one instance of ARCNET Analyzer to run Caution Device Numbers must differ two instances have matching Device Numbers the applications will freeze and power must be recycled to clear the condition Note Only one ana cfg configuration file may exist regardless of the number of USB Modules may be in operation That is each instance of ARCNET Analyzer will launch with the same configuration settings retrieved from ana cfg Thus for each instance of ARCNET Analyzer to have a unique configuration it must be specified after startup Launching ARCNET Analyzer with the DOS Option As with any program ARCNET Analyzer can be opened from DOS However two optional DOS modes exist to provide continuous data capture and logging Each mode is invoked when ARCNET Analyzer is opened with the command line analyzer x where
17. Mbps C ElA 485AC ACK 1 25 Mbps C 625 Kbps C 312 5 Kbps 156 25Kbps Device Number 0 Figure 7 Settings Menu Is Initially Unconfigured Figure 7 displays the initial Settings Menu as it appears before any configuration has been done When the program is first launched the RAM in the USB Module will not have valid configuration data for these 3 settings It will need to be updated with these settings from the Software Module before data acquisition can commence Note Each time ARCNET Analyzer is terminated the existing configuration is saved to the file ana cfg to be used automatically the next time the program is launched TD000700 0ME 13 The centre column in Figure 8 below offers 3 transceiver choices one for dipulse signalling Coax TP and two for non dipulse signalling EIA 485DC and EIA 485AC Transceiver characteristics are discussed in pages 10 15 of the accompanying ARCNET Tutorial The transceiver selection must match the DIP switch configuration in the USB Module If the network cabling protocol changes or if ARCNET Analyzer is moved to another network with different cabling this software setting must be adjusted to match the new conditions Data Rate Port Filter C 10Mbps C Coax ITT C 5Mbps C El 4B5DC C 25Mbps C El 485AC ACK C 1 25 Mbps pcc C 625 Kbps C 312 5 Kbps 156 25Kbps Devic
18. Packet Detall 24 Operating Mods 26 Auto Restart T S 26 Packed eo eid estive ben e edis dU c Ed 26 Capt rme 26 Capture 26 Trigger Position and the Capture 27 Analyzer States 29 29 Capturing PN Ec 29 Waiting Tor 29 Trigger Found Capturing Data 30 Capture 30 Capture Complete 4 obstet a OE SO EDD RA REG EEUU UR ANE SU rid CHEERS 30 Ending and Saving a Capture SeSsion cccccccceessesesnneeceeeeeeeseeennaeeececeeeeseeeeaaaees 31 UCP PUTS tap to ban 31 saving Captured 31 Clearing the Captured 31 Search ES 31 TD000700 0ME 3 7 1 7 2 7 3 7 4 7 5 8 1 8 2 8 3 8 4 8 5 8 6 8 7 8 8 8 9 8 10 8 11 8 1 1 8 1 2 8 1 3 8 1 4 NTE NER ETS 32 Warranty 32 Technical Support iei 32 Warranty Repair 33 NOn Warranty 33 Returning Products for Repair e eeere sesta eoe eene ie Phe aea EY eee aeo FE ere ae oua e nene bona CUR 33 Appendices SEE 34 Declaration of Con
19. Stop button is clicked Trigger Type n List External Manual 3 which trigger position is selected If the Top Position is chosen for the trigger the Capture Buffer does not begin to fill until a Trigger occurs If allowed to fill without interruption the buffer will fill completely as illustrated in Chart A of Figure 23 Data acquisition then terminates automatically If the Stop button is clicked the buffer partially fills as seen in Chart B of Figure 23 A Complete Fill B Partial Fill Unused Buffer Area Figure 23 Top Triggering If the Bottom Position is chosen the Capture Buffer starts filling on a click of the Start button Two events will end data acquisition a Trigger or a click of the Stop button If not interrupted the buffer will fill completely as illustrated in Figure 24 where capture ends with either a Trigger as in Chart A or a click of the Stop button as in Chart B Although the buffer overflows before termination occurs a full buffer of current data is maintained because data wraps back to the beginning as new data replaces old On the other hand either termination event could occur before the buffer has filled resulting in a partial fill as shown in Figure 24 Charts C and D A Complete Fill B Complete Fill C Partial Fill D Partial Fill Unused Buffer Area Unused Buffer Area Figure 23 Bottom Triggering TD000700 0ME 27 If triggering is set to Centre Posi
20. allows the user to save the data as a text file in Comma Separated Variable format csv A CSV file cannot be re opened by ARCNET Analyzer but can be read by various applications CSV files identify the data rate port type filters in operation and whether triggered or non triggered mode is used Saved messages include Message Index Time Stamp Trigger Type SID DID Length System Code and Data 0 507 bytes Since CSV files are often viewed with Microsoft Excel data is packed four bytes per cell to allow 508 data bytes to fit within the 255 column limit of Excel Clearing the Captured Data Clicking the Clear button will reset the data buffer and clear the capture screen Search Function A useful feature of the Main Display is the Find function shown in Figure 28 below By entering any character or character string into the search window then clicking the Search button ARCNET Analyzer will find the next occurrence of the search string within the captured data The search direction can be specified by selecting Up or Down and it is not case sensitive Figure 24 Search Function TD000700 0ME 31 Service Warranty Contemporary Controls CC warrants its product to the original purchaser for two years from the product s shipping date If a CC product fails to operate in compliance with its specification during this period CC will at its option repair or replace the product at no charge The customer is however
21. d Clicking the Stop button will end data capture and the session Before acquiring more data the Capture Buffer must be cleared and a new data capture session begun To exit from the Capture Stopped state click the Clear button causing the buffer to empty and ARCNET Analyzer to revert to the Idle state Before clearing the buffer captured data can be stored to disk for later study by clicking the File Save option Capture Complete After the data buffer is full or the Stop button has been clicked the Capture Complete state will result Any further data capture will require a new session of data acquisition The Capture Complete state will end only after the Clear button has been clicked causing the data buffer to be emptied and the program to revert to the Idle state TD000700 0ME 30 Ending and Saving a Capture Session Stopping Capture Data capture will terminate automatically in accordance with the trigger settings in use and the reception of the specified trigger Otherwise clicking the Stop button will end a capture session Saving Captured Data The user can save captured data by selecting the File Save drop down menu option or by pressing the Ctrl S hotkey combination The Save As option is unavailable in this release of ARCNET Analyzer The dialogue box will appear letting the user save captured data as a file The default format aad permits re opening the file in ARCNET Analyzer at a later stage An option
22. dure will offer a choice for the destination of ARCNET Analyzer files If the user does not specify a destination folder with the Browse option the following folder will be created by default C Program Files Contemporary Control Systems Inc ARCNET Analyzer After the file destination is specified a Program Folder is chosen for the short cut icons The default Program Folder will be ARCNET Analyzer but the user may specify another if desired After specifying the Program Folder the following files will be installed in the destination folder FILE NAME SIZE DESCRIPTION AAdIl dll 84 kB ARCNET Analyzer Data Link Library Analyzer exe 128 kB ARCNET Analyzer Program Uninst isu 2 kB ARCNET Analyzer Uninstall Instruction File Upon completion of the software installation the Windows Program Menu will now have ARCNET Analyzer and its icon as an option The program may now be launched by selecting it from the Program Menu but ARCNET Analyzer will need to be configured before the initial session of data acquisition TD000700 0ME 11 Configuring ARCNET Analyzer ARCNET Analyzer is preset at the factory to capture data from coaxial cable at 2 5 Mbps Most operational features are determined by software settings but changing the transceiver setting involves reconfiguring both the hardware and the software Configuring the Port Transceiver in Hardware The USB Module has one bank of 9 DIP switches for specifying which transceiver will serve as
23. e Number 0 Cancel Figure 8 Settings for Data Rate Port Filter and Device Number Configuring the Data Rate The Data Rate setting in Figure 8 matches the data rate of ARCNET Analyzer to that of the network In addition to the traditional fixed ARCNET data rate of 2 5 Mbps the most common data rate multiples and sub multiples are available If the network data rate changes or if ARCNET Analyzer is moved to another network with a different data rate this software setting must be adjusted to match the new rate This is only a software setting the USB Module does not have settings for the data rate NOTE Some transceivers use only certain data rates as described in Section 8 8 Configuring the Filter In the Filter area of Figure 8 the user specifies which ARCNET frames are to be captured by ARCNET Analyzer during data acquisition These options are ITT FBE ACK NAK and PAC Unchecked boxes specify frames which are ignored Any or all frame types may be designated for capture but at least one must be specified Filtering is controlled purely by software although the filtering process itself occurs in the USB Module Configuring the Device Number One computer can run as many as 5 instances of ARCNET Analyzer simultaneously each capturing data independently under a unique Device Number The default value of 0 corresponds to a single instance See Section 8 9 for more information TD000700 0ME 14
24. e receives a time stamp which allows accurate time analysis of the acquired data At the user s discretion time stamping can be either absolute or relative with resolution variable to 2 5 us Flexible triggering options permit diverse strategies for development and debugging The user may choose to capture data acquired before the trigger after the trigger or both Data capture is initiated when a user specified trigger or combination of triggers is detected in the data stream A list of up to 16 user defined triggers can stipulate as applicable frame type source ID destination ID packet length and packet data Triggering can be in response to any event within the unbounded traffic stream or limited to a particular window of opportunity established by an external control signal either manually or automatically generated Also triggering be can set to report the presence of an ARCNET error usually a reconfiguration burst in the data stream TD000700 0ME 5 Overview of ARCNET Analyzer Figure 1 presents a quick look at the main features of the Main Display High Current state of Large on board Message Index Locate trigger Search function resolution operation is memory for real reports position of quickly with will find any Time Stamp of reported on time storage of the top line of Trigger Position character string in all frames screen ARCNET frames display window the acquired data ARCNET Analyzer
25. error The USB Module requires service TD000700 0ME 20 Adjusting Signal Sensitivity The USB Module has devices for adjusting the sensitivity of three inputs though deviation from factory settings is rarely justified The user should confirm that changes are needed before attempting such adjustment The locations of these devices are illustrated in Figure 17 below Trigger input circuitry is discussed on the next page Coaxial Signal Receiver Sensitivity R92 By default all three pins of jumper block JP12 are left open resulting in the coaxial receiver sensitivity set by the factory If pins 1 2 of JP12 are jumpered shorted the receiver will respond to the weakest signal possible If pins 2 3 are jumpered the sensitivity of the received signal can be adjusted with R92 EIA 485 Signal Receiver Sensitivity R50 By default all three pins of jumper block JP3 are left open resulting in the EIA 485 receiver sensitivity set by the factory If pins 1 2 of JP3 are jumpered the receiver will respond to the weakest signal possible If pins 2 3 are jumpered the sensitivity of the received signal can be adjusted with R50 Isolated Trigger Sensitivity R84 An external trigger may be applied to an opto isolator via pins 1 2 of the TRIG Jack The typical threshold value of 5 volts can be varied from 5 to 24 volts by adjusting R84 R50 Adjusts DIP Switch JP3 485 S1 Specifies Enables Sensitivity Transceiver
26. es and the Long Packet button has been selected Under the Packet Data section of the display 2 data value triggers have been defined by their Offset Value parameters 0 12 and 144 A4 Just this one frame specification will result in the use of 7 triggers PAC SID DID LEN 0 12 144 A4 plus one for the long packet Options also exist to ogically qualify packet data in which the stipulated data values are subjected to AND OR and TRUE FALSE tests When checked each No Match option box enables triggering when its associated value does NOT find a match in the data stream In the example of Figure 15 the 144 A4 specification will enable a trigger whenever the data byte offset by 144 contains ANY value EXCEPT A4 Because the AND radio button has been selected ARCNET Analyzer will trigger ONLY when its examination of the data stream finds that data specification 0 12 is matched AND specification 144 A4 is not matched The default condition where no logic options are specified provides that ALL data specifications must MATCH Clicking the Long Packet button was redundant in this example The Long and Short buttons should be used to specify packet lengths in those cases where precise packet length is unimportant in the specification Trigger Settings x Type Packet Dffset Value No Match Source ID fi 1 FF o fi 2 Destination ID 2 D FF 44 4 Packet Length 150 1 1FC E Packe
27. formity Pope Co Ped eua 34 Applied Council Directives edu dadas 34 Standard to which Conformity is Declared 34 NUTRUERNUE 34 Authorized dee o te 34 Removing ARCNET Analyzer from the Host Computer ees 34 Frame Dy DOS eie cto cb bx EPI cL Ex Ed ex EE QUERER v EEE 35 How Frames and Frame Elements Count as Triggers e eeeeeee eene 35 Abbreviations Used In This Manual cc eee ette enean eset enaa 36 Hot Keys Used by ARCNET Analyzer ee eee eee 37 File Extensions Used by ARCNET Analyzer ecce eee eene e eee eee ee eee etna aee eee eeo 37 Data Rate Considerations ceres eroe kien eto o Ere eR So Fee PER PEE RE TER EN RR GERE e En eR Erbe PEE 37 Using Multiple Instances of Analy zet ccccccssssssssssccccsssssssssssccseeees 38 Launching ARCNET Analyzer with the DOS Option e eeeeeee 38 Error Messages UUCUEBAR ED A 39 TD000700 0ME 4 Introduction ARCNET Analyzer is a powerful tool part hardware part software for diagnosing network traffic for designing networks and for developing and debugging associated equipment It captures and displays all
28. gnate the connection points for phase A phase B LINE and the shield S If the ARCNET Analyzer occupies the end of a segment the RJ 11 terminator should be installed in one of the RJ 11 jacks It provides 100 of passive termination a value which matches the characteristic impedance of most twisted pair cable Daisy chained connections are easily made with the two RJ 11 jacks If daisy chaining is desired with loose wire connections to the screw connector located in green in Figure 3 simply double up the individual wires from both cables taking care to tie LINE to terminal A and LINE to terminal TD000700 0ME 10 Pin assignments for RJ 11 connectors are listed in Table 1 and illustrated in Figure 4 PIN TP 485 485X 1 2 N C N C N C 3 LINE LINE LINE 4 LINE LINE LINE 5 6 Table 1 RJ 11 Pin Assignments Figure 4 RJ 11 Jack NOTE For the twisted pair TP transceiver LINE is defined at the leading positive phase of the dipulse signal For the 485 transceiver LINE is defined as the pin with the more positive applied failsafe bias The 485X transceiver is not polarized Installation of Software With Windows active and the CD inserted run the Setup exe file located in the Setup directory on the CD As the automatic installation begins follow the instructions on the screen as they appear The installation proce
29. he signal can be External provided by a device attached to the USB Module or the signal can be a Manual trigger generated in the host computer by clicking the Manual Trigger button on the Main Display of the Software Module NOTE The Manual Trigger button is only visible if the Manual option is checked under the Trigger Type options in the lower right area of the Main Display Data triggers which offer far more flexibility cause data capture to begin when a particular ARCNET frame or some pattern of frames occurs within the data stream With data triggers a Trigger List of considerable complexity can be built Figure 10 above illustrates the Trigger option from the Options drop down menu This selection is for setting data triggers When this choice is made the user may access and specify several parameters as discussed and illustrated on the next page TD000700 0ME 15 NOTE For a trigger to work the Filter setting see Figure 8 must specify the type of frame being used as the trigger For example if a trigger specification includes the type FBE the trigger will only work if FBE has also been selected in the Settings Menu When invoked for the first time a blank Trigger Display appears as displayed in Figure 11 below The area in white is where trigger details are reported as they are set Trigger x Maximum triggers is 16 Triggers made 0 Delete Modify Indent Clear Triggers OK
30. ies are used CC is not responsible for any damage incurred from improper packaging Shipments should be insured for your protection Ship the product freight prepaid to the location from which it was purchased Contemporary Control Systems Inc 2431 Curtiss Street Downers Grove IL 60515 U S A Contemporary Controls Ltd Sovereign Court Two University of Warwick Science Park Sir William Lyons Rd Coventry CV4 7EZ U K TD000700 0ME 33 Appendices Declaration of Conformity Applied Council Directives Low Voltage Directive 2006 95 EC General Product Safety Directive 2001 95 EC Electromagnetic Compatibility Directive 2004 108 EC Restriction of Hazardous Substances Directive 2002 95 EC Waste Electrical and Electronic Equipment Directive 2002 96 EC Standard to which Conformity is Declared EN 55022 1998 A1 2000 A2 2003 Class A Limits and Methods of Measurement of Radio Disturbance Characteristics of Information Technology Equipment EN 55024 1998 A1 2001 A2 2003 Information Technology Equipment Immunity Characteristics Limits and Methods of Measurement Manufacturer Contemporary Control Systems Inc 2431 Curtiss Street Downers Grove IL 60515 USA Authorized Representative Contemporary Controls Ltd Sovereign Court Two University of Warwick Science Park Sir William Lyons Road Coventry CV4 7EZ UNITED KINGDOM Removing ARCNET Analyzer from the Host Computer ARCNET Analyzer can be rem
31. lease check your power and cable and try again Cannot Write to 386 JTAG Port Enter Destination ID between 0 and 255 Enter Length between 1 and 507 Enter Source ID between 1 and 255 No Triggers are made Insert Triggers No Triggers are Selected Insert Triggers Not Initialized Number of Triggers cannot exceed 16 Delete some triggers Packet length error The packet length for short packet varies from 1 to 253 Enter correct packet length Packet length error The packet length for long packet varies from 257 to 508 Enter correct packet length PC to USB transfer failed Put the Offset Parameter Put the Value parameter for every input Offset Select Trigger Position Settings Could not be Done USB to PC transfer failure Comment Packets of these lengths cannot be sent They are called exception packets and must be padded with null data so that they can be sent as long packets Self explanatory Self explanatory The JTAG Port has configuration issues needing attention A valid ARCNET destination node ID must be specified A valid Packet Length must be specified A valid ARCNET source node ID must be specified Data capture cannot proceed because no triggers have been defined although List Triggering mode has been checked The trigger specification of a retrieved file is improper for the current capture session Data Rate Port and Filter settings have not been downloaded to the USB Module Self e
32. nators have been provided for this purpose NOTE The connectors are internally bussed together therefore a terminator should only be used when needed avoid improper impedance matching and data irregularities that may result detach unneeded terminators and unused network cables Connecting to Coax Traditional coax is coupled to the ARCNET Analyzer through a BNC Tee connector attached to the BNC port located in orange in Figure 3 If the ARCNET Analyzer connects as a bus device no termination should be added The two coax lines feeding the bus from either direction attach to the two connections made available by the Tee On the other hand if the ARCNET Analyzer is the last device on the bus the coax line should attach to one part of the Tee and the BNC terminator should be installed on the other part of the Tee The BNC terminator has a value of 93 O to match RG 62 u coaxial cable the type of coaxial cable most often recommended for ARCNET ARCNET TRIG ORDY ARM SBA C OAcQ 72 1234 Figure 3 Fieldbus Connections Connecting to Twisted Pair Twisted pair cable may be attached to either of the two RJ 11 modular jacks located in blue in Figure 3 Alternatively the end of a twisted pair cable can be separated and the individual wires fastened to the 3 wire screw connector provided for this purpose located in green in Figure 3 The 3 letters printed above the connector desi
33. ng data automatically as described in Section 8 10 LED Indicators ARCNET Analyzer is provided with six LEDs which serve to indicate various states of operation The LEDs report on the status of power and data Power LEDs These LEDs are adjacent to the 5 VDC Jack and indicate the following Label Function Colour Description PWR Power Green Glows to indicate the 5 volt supply is functioning properly RST Reset Red Glows to indicate an abnormality in the 5 volt supply Data LEDs These LEDs are adjacent to the TRIG Jack and indicate the following Label Function Colour Description RDY Ready Yellow Glows to indicate ARCNET Analyzer is ready to acquire data This LED will not glow until Data Rate Port and Filter settings have been downloaded to RAM in the USB Module Trigger parameters have no affect on this LED ARM Armed Yellow Glows after the Start button has been clicked to indicate a trigger has been specified but has not yet been received Data acquisition can be accomplished without the use of a trigger in which case this LED will never glow ACQ Acquiring Green Glows to indicate data is being acquired in either triggered or untriggered operation If triggers are in use this LED will glow when a trigger is received f triggers are not in use the LED will glow when the Start button is activated n either case this LED will stay lit until data capture has stopped ERR Error Red Glows to indicate an internal hardware
34. not display data from where it paused After data acquisition ends the Pause function if active will disengage final captured data will be displayed and the Analyzer State will report Capture Complete TD000700 0ME 22 The Data Window Various useful information is presented in the Data Window as indicated in Figure 19 Time Stamp s This reports when each individual frame was received Absolute If this option is chosen the Time Stamp represents the time elapsed since reception of the first message The Relative option is unavailable in this release of ARCNET Analyzer The Time Stamp interval varies with the Data Rate as shown in Section 8 8 Trigger column An asterisk marks the trigger frame If a trigger specification consists of multiple frames the asterisk marks the final frame of the sequence Type The frame types reported in this column are discussed in Section 8 3 SID Source Identifier indicates the transmitting node DID Destination Identifier indicates the receiving node Length This reports the Length of data in an ARCNET data packet SC System Codes are reported in this column Section 6 4 3 discusses how system codes are treated by ARCNET Analyzer ARCNET amp na vze Filey Edt NewN OpNens A TimeStamp Absolute C Relative Analyzer SNe Captures Message Index Nepturng Dam 15555 7681 Time Stamp s T SID DID Length SC Data 07507 Bytes
35. on the repair cost at the time a Returned Material Authorization RMA is requested Customers pay the cost of shipping the defective product to CC and will be invoiced for the return shipment to their facility No repair will be performed without customer approval If a product is determined to be unrepairable the customer will be asked if the product can be replaced with a refurbished product assuming one is available Under no circumstances will CC replace a defective product without customer approval Allow ten working days for repairs Returning Products for Repair To schedule service for a product please call CC Customer Service support directly at 1 630 963 7070 U S or 44 0 24 7641 3786 U K Have the product model and serial number available along with a description of the problem A Customer Service representative will record the appropriate information and issue via fax an RMA number a code number by which we track the product while it is being processed Once you have received the RMA number follow the instructions of the Customer Service support representative and return the product to us freight prepaid with the RMA number clearly marked on the exterior of the package If possible reuse the original shipping containers and packaging In any event be sure you follow good ESD control practices when handling the product and ensure that antistatic bags and packing materials with adequate padding and shock absorbing propert
36. oved from the host computer using standard Windows tools Select Add Remove Programs from the Control Panel From the list of programs choose ARCNET Analyzer then press the Add Remove button Once Windows completes its process ARCNET Analyzer has been removed TD000700 0ME 34 Frame Types Frame Type Description Invitation to Transmit ITT is the token which allows the node holding it to transmit data If the node has nothing to transmit it passes the token to the node having the next highest address The node which will receive the token is identified by the frame element DID Destination Identifier also called NID in some discussions Token passing proceeds until all nodes have participated Each node address must be unique in the range 1 255 Free Buffer Inquiry If the node in possession of the token needs to transmit it queries the destination node with an FBE which determines if the destination node is able to accept the transmission with an the destination node is identified with the DID frame element Acknowledgement If the destination node is capable of receiving data it responds to an with an If the destination node correctly receives the data it responds with another ACK These ACKs are not directed to the source node so no DID appears in the ACK response Negative Acknowledgement If the destination node is incapable of receiving a transmission it responds to an FBE
37. responsible for shipping the product CC assumes no responsibility for the product until it is received This warranty does not cover repair of products that have been damaged by abuse accident disaster misuse or incorrect installation CC s limited warranty covers products only as delivered User modification may void the warranty if the product is damaged during installation of the modifications in which case this warranty does not cover repair or replacement This warranty in no way warrants suitability of the product for any specific application IN NO EVENT WILL CC BE LIABLE FOR ANY DAMAGES INCLUDING LOST PROFITS LOST SAVINGS OR OTHER INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE PRODUCT EVEN IF CC HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES OR FOR ANY CLAIM BY ANY PARTY OTHER THAN THE PURCHASER THE ABOVE WARRANTY IS IN LIEU OF ANY AND ALL OTHER WARRANTIES EXPRESSED OR IMPLIED OR STATUTORY INCLUDING THE WARRANTIES OF MERCHANTABILITY FITNESS FOR PARTICULAR PURPOSE OR USE TITLE AND NONINFRINGEMENT Repair or replacement as provided above shall be the purchaser s sole and exclusive remedy and CC s exclusive liability for any breach of warranty Technical Support Technical support is available each weekday except holidays during the office hours listed below Outside these hours voice mail messages can be left in our mailbox after contacting the main phone number Requests can al
38. s clicked and if and when the Trigger arrives A Untriggered B Triggered Unused Buffer Area Unused Buffer Area Figure 24 Centre Triggering with Manual Termination of Data Capture TD000700 0ME 28 Analyzer States Initially ARCNET Analyzer will need to be configured Until that is done it will Edt View Options Help have no operational state TimeStamp After configuration the following six a Analyzer State states of operation are possible ica Relative Idle After ARCNET Analyzer has been configured it will assume the Idle state until data acquisition is begun by clicking the Start button Once a capture session has ended and the data buffer cleared the Idle state will again be invoked Capturing Data Data acquisition begins as a result of clicking the Start button ARCNET Analyzer will continue capturing data until either the Stop button is clicked or the data buffer is full NOTE In Scroll Mode clicking the Pause button will not affect data capture it merely freezes the display while data capture continues in the background Continued data acquisition is confirmed by the steadily increasing number of Captures despite the fact that the display is paused ARCNET Analyzer File Edt View Options Help TimeStamp Analyzer State Captures Messagelndex Trigger Position Absolute Capturing Data 15565 7681 7683 Relative
39. s example shows that the first byte 4D after the Data Length Code is recognized as a System Code and reported as such in the System Code field of the Details window The next byte 4E is reported as the first data byte under the Raw Data display This situation exists because the No System Code option has not been checked Now consider Figure 22 which displays the same frame but shows that the No System Code option is now checked When engaged this option causes ARCNET Analyzer to treat the first byte following the Data Length Code as a data byte not a system code As a result the System Code field of the Details window is empty and deactivated The first byte 4D is no longer recognized as a System Code but is now reported as the first byte of data under the Raw Data display TD000700 0ME 24 Figure 11 System Code Recognized ARCNET Analyzer File Edt View Options Help Settings TimeStamp Tigger Absolute Mode Captures Messagelndex Trigger Position Find Relat Scroll Mode 15565 26 0 1207 No System Code C Up Tm Auto Restart Time Staiger p J DID Length SC 0 507 Bytes 0060300 ACK 0000000 00 0000000 00 0000000 00 0000000 00 Source ID Destination ID Packet Length 0000000 00 0000000 00 a e ce 0000000 00 lt ELEME Raw Data ASCII
40. so be submitted by fax or by e mail to the numbers listed below but please leave a detailed description of the problem We will contact you the next business day by the method requested by the customer If the problem cannot be resolved by technical support the customer will be given an RMA number in order that the product may be returned to CC for repair Support Option Contemporary Controls USA Contemporary Controls Ltd UK Office Hours 8 00 a m 5 00 p m Central time 8 00 a m 5 00 p m United Kingdom time Voice 1 630 963 7070 44 0 24 7641 3786 Fax 1 630 963 0109 44 0 24 7641 3923 Email techsupport ccontrols com support ccontrols co uk Web Site www ccontrols com www ccontrols co uk TD000700 0ME 32 Warranty Repair Products under warranty that were not subjected to misuse or abuse will be repaired at no charge to the customer The customer however pays for shipping the product back to CC while CC pays for the return shipment to the customer normally ships ground International shipments may take longer If the product has been determined to be misused or abused CC will provide the customer with a quotation for repair No work will be done without customer approval Non Warranty Repair CC provides a repair service for all its products Repair charges are based upon a fixed fee basis depending upon the complexity of the product Therefore Customer Service can provide a quotation
41. t Long Short B AND C OR Cancel Figure 11 Specifying Triggers a Packet Frame The trigger specification that results from the above settings is depicted in Figure 16 on the next page TD000700 0ME 18 Note in Figure 16 that a long packet counts as a trigger This is true whether notthe Long Packet button is selected This happens because long packet offsets are calculated differently from those used in short packets no distinction were made between short and long packets offsets would be correct only for short packets The existence of exception packets of lengths between short and long packets create the need to adjust those offsets which point to data values in the 257 507 byte range otherwise they could not be properly located For a further discussion of these concepts see the ARCNET Tutorial which accompanies this manual Trigger X Maximum triggers is 16 Triggers made 7 SID 1 DID 2 LEN 150 LP OH 0 Vall 12 Off2 144 Val2 44 Delete Modify Indent Figure 11 A Packet Trigger Specification TD000700 0ME 19 Using ARCNET Analyzer Starting ARCNET Analyzer Select ARCNET Analyzer from the Windows Start Programs menu structure The Main Display will appear Verify the USB Module is properly powered and connected to the field bus and host computer before proceeding An option allows the program to launch from DOS and begin capturi
42. tion the Capture Buffer will start filling at the click of the Start button The intent with centre positioning is to achieve a perfect data fill as in Figure 25 Chart A but certain factors may cause the trigger to be uncentered The perfect fill will only result when data acquisition terminates automatically and if the buffer has filled to at least the halfway point when triggering occurs If the buffer has filled beyond the halfway mark before triggering occurs as in Figure 25 Chart B data capture will not end when the buffer limit is reached Instead data will wrap back to the beginning of the buffer with the earliest portion of the Pre Trigger Data being replaced with the atest portion of the Post Trigger Data until the trigger has been positioned in the ogical centre of the buffer If the trigger arrives prematurely as in Figure 25 Chart C with less than half the buffer holding data then imperfect centring will result as data acquisition continues until the buffer limit is reached A Perfect Centre B Wrapped Data C Imperfect Centre Figure 23 Centre Triggering with Automatic Termination of Data Capture If data acquisition is interrupted with a click of the Stop button the result will be an uncentered trigger This can happen before a trigger occurs as in Figure 26 Chart A or after a trigger occurs as in Figure 26 Chart B In either case the actual amount of data captured will vary according to when the Stop button i
43. tion 8 8 it is possible to determine whether the ERR was due to noise or a RECON Capturing Data Clicking on the Start button in the lower left area of the Main Display initiates a capture session However the following features should be taken into consideration 1 1 1 Capture Buffer The ARCNET Analyzer USB Module contains a RAM buffer 512 kB in size to store messages captured from the ARCNET bus By storing messages in an onboard buffer the processing time for each message is minimized Most other ARCNET analyzers use a smaller RAM buffer of only a few hundred messages To store more than this number other bus analyzers log the data to a text file and allow the user to analyze it off line However accessing the hard disk to store data into a text file is considerably slower than accessing RAM This can lead to message loss especially at high bus loads and the user fails to observe all ARCNET bus activity ARCNET Analyzer is different in that it uses an onboard buffer with data transfer to the host when the USB Module s 386 CPU is not busy capturing data Therefore the user can review much more of the ARCNET bus activity off line using ARCNET Analyzer without the risk of losing data because of message processing overhead TD000700 0ME 26 Trigger Position and the Capture Buffer How the Capture Buffer fills depends on three things zi Trigger Position 1 when a Trigger occurs C Top Center C Bottom 2 if the
44. with a NAK As with ACK the response is not directed to the inquiring node so DID is not used NAK is not used to report a failure to receive data instead the absence of an ACK indicates the failure Packet If ACK is the response to an FBE a PAC data packet is transmitted Packet length ranges from 0 507 bytes and is indicated by the element LEN Error Unlike true frame types used for normal ARCNET messaging ERR indicates an error condition which is most likely a RECON burst Often the error involves a broken message symbolized by BRK caused by either a RECON or noise in which case a BRK will precede the ERR In Packed Mode the ERR length is measured and reported in the data display Using the table of Section 8 8 the ERR frame length can be used to distinguish between noise and How Frames and Frame Elements Count as Triggers NOTE In the table below DID and SID are standard ARCNET frame elements Many more elements which ARCNET Analyzer does not use as triggers are discussed in the ARCNET Tutorial which accompanies this manual LEN length is not a standard element lt is a trigger parameter used by ARCNET Analyzer f LEN exceeds 256 bytes an additional trigger is used in informing ARCNET Analyzer that a long packet is present and therefore the offset must be calculated accordingly Frame Frame Element Trigger Count DID DID None None All optional SID DID LEN and up
45. xplanatory This error occurs when the entered packet length fails to conform to the ARCNET standard length for short packets This error occurs when the entered packet length fails to conform to the ARCNET standard length for long packets Check the USB cable connection Recycling power and or restarting ARCNET Analyzer may be needed A Packet Data Value has been entered without a corresponding Offset Each Packet Data Offset entry must have a valid Value entry Self explanatory The retrieved file settings must be redefined Check the USB cable connection Recycling power and or restarting ARCNET Analyzer may be needed TD000700 0ME 39
46. z RAM 32 MB Hard Disk 500 MB 100 MB free Operating System Windows 98 ME 2000 or XP Monitor VGA 800 x 600 pixel resolution Removable Media CD ROM Pointing Device Mouse Communications At least one free USB 1 1 compatible port Physical Dimensions 8 25 Lx 4 5 W x 1 5 210mmx 115 mm x 38 mm Shipping Weight 2 Ibs 0 9kg Environmental Operating Temperature 0 to 60 Storage Temperature 40 to 85 Functional Data Rates 10 Mbps 5 0 Mbps 2 5 Mbps 1 25 Mbps 625 kbps 312 5 kbps 156 25 kbps External Trigger Input Limitation Non isolated trigger 2 5 volts at 2 mA max Isolated trigger 5 24 volts depends on setting of R84 18 30 mA depends on input voltage and setting of R84 Electrical Switching AC Power Adaptor 100 240 VAC 50 60 Hz 5 VA USB Module 5 VDC 500 mA Compliance Compatibility Compliant with ANSI ATA 878 1 1999 Regulatory Compliance CE Mark TD000700 0ME 7 Installing ARCNET Analyzer Component List ARCNET Analyzer is shipped with one of each of the following items CD ROM RJ 11 Terminator USB Module BNC Terminator USB Data Cable BNC Tee Switching AC Power Adaptor Removable Screw Connector 3 wire Mains Power Cord Removable Screw Connector 4 wire n C x pevet TD000700 0ME 8 Installation of Hardware Connection to Power Mains voltage is connected to the AC power adaptor by means of a detachable power cord The AC power adaptor
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