PAXCDC5 Profibus Option Card Data Sheet/Manual PDF
Contents
1. B 2 paga ae COH an eeo sB oO a O mess CONTROLLER ROTARY SWITCHES 100 10 F CONNECTS PAX METER TO PROFIBUS DP NETWORK STANDARD 9 PIN D SUB CONNECTOR INTERFACE CYCLIC I O DATA TRANSMISSION UP TO 84 BYTES IN OUT OPERATING RANGE FROM 9 6 KBAUD TO 12 MBAUD WITH AUTOMATIC BAUD RATE DETECTION STATION ADDRESS SET THROUGH ROTARY SWITCHES CONFIGURATION VIA SELECTION OF PRE CONFIGURED MODULES FOR ANALOG OR DIGITAL PAX METER TYPE FREEZE MODE AND SYNC MODE SUPPORTED DIAGNOSTIC LEDs INDICATE CARD STATUS PNO CERTIFIED CONFORMANCE TESTED SLAVE DEVICE Data Exchange with the Master device occurs through cyclic I O data transmission The size of the I O data block is determined by the selection of pre configured Modules for Analog or Digital PAX meter type All data values are in 32 bit integer format Motorola byte ordering The PROFIBUS DP protocol per EN 50170 is implemented using the Siemens SPC3 ASIC Three on board Diagnostic LEDs indicate the status of Data Exchange DATA the SPC3 Watchdog WD and DP State Machine DP PNO Conformance and GSD File The PAX PROFIBUS DP Card is PNO certified having passed the conformance test for PROFIBUS DP Slave devices Certificate No Z01170 The PNO Identifier for this PROFIBUS device is 0x09D0 The functional characteristics are described in GSD file REDLO9D0 GSD The GSD file and PAX bitmap can be downloaded from the Red Lion Controls website pete het ee2. The Input Data and Output Data Blocks are updated at the end of each scan of the host PAX Meter In order to increase the rate that new data is made available to the PROFIBUS Network a scheme is employed that reduces the number of registers polled by the card in each scan to only those that are required in the application This Polled Read Mask maps each bit to a PAX register index which when set will force that register to be read from the PAX Meter This Polled Read Mask is defined as User Parameter Data and is described in more detail in section Parameterization Due to the cyclic nature of data exchange in the PROFIBUS network changing Output Data in a slave device a scheme is employed that indicates which registers need to be written to the PAX Meter This Demand Write Mask maps each bit to a register index which when set will perform a once only write from the Output Data Block to the PAX Meter Clearing and re setting the bit in the Demand Write Mask will cause the value to be written again The Demand Write Mask is part of the Data Block structure and is described in detail in section Demand Write and Store Request Masks STATION ADDRESS The station address is set using three rotary switches allowing the ID to be set in standard decimal notation e g address 123 SWC 1 SWB 2 SWA 3 Valid addresses range from 0 to 125 If an address greater than 125 is set the card will default to a station address of 125 Note
3. FIELDBUS TYPE PROFIBUS DP per standard EN 50170 implemented with Siemens SPC3 ASIC BUS INTERFACE Isolated RS485 through 9 Pin D Sub connector 3 NETWORK ISOLATION 500 Vrms for 1 minute 50 V working between PROFIBUS DP network and PAX Sensor amp User Input commons Not isolated from other PAX option card commons POWER Card powered internally by the PAX meter 5 OUTPUT POWER 5 VDC 90 mA max available on the D Sub connector pins 5 GND and 6 5 V 6 BAUD RATES 9 6 Kbaud to 12 Mbaud Auto Baud Rate Detection STATION ADDRESS 0 to 125 set by rotary switches SUPPORTED FUNCTIONS FREEZE Mode Supported SYNC Mode Supported FAIL SAFE Mode Not Supported EXTERNAL DIAGNOSTIC DATA Not Supported 9 INSTALLATION REQUIREMENTS Installed Depth 4 88 124 mm from the rear of the PAX bezel Additional Height 0 35 9 mm above the PAX case surface I 2 x ORDERING INFORMATION MODEL NO DESCRIPTION PART NUMBER PAXCDC PAX PROFIBUS DP Communications Card PAXCDC50 INSTALLING AN OPTION CARD A Caution The option and main circuit cards contain static sensitive components Before handling the cards discharge static charges from your body by touching a grounded bare metal object Ideally handle the cards at a static controlled clean workstation Also only handle the cards by the edges Dirt oil or other contaminants that may contact the cards can adversely affect circuit operation Warning Exposed line vo
4. The card will not default to 125 if set for 999 this number is a special test mode Connectors TOP VIEW Alignment Slots oe Main Circuit Board Analog Output or ao Real Time ar Clock Card Serial Communications Card Setpoint Output Card Pb dadaddlY add WIIG ECICIC lee DIAGNOSTIC LEDs Three LEDs indicate the status of the SPC3 DP Control State Machine DP the Watchdog State Machine WD and the PROFIBUS DP Data Exchange State DATA as shown in Table 1 The LEDs are viewable through the vents on the top of the PAX case Table 1 LED Indication of PROFIBUS DP Card Status LED STATE CARD STATUS DP Red WD Green FLASHING FLASHING OFF FLASHING OFF ON FLASHING ON ON ON DATA Red OFF OFF OFF OFF OFF ON Data Exchange Bus Not Connected Baud Rate Search Baud Control Waiting for Parameterization Waiting for Configuration PARAMETERIZATION The Polled Read Mask defines which PAX registers will be polled by the card and therefore updated in the Input Data Block The Polled Read Mask is a 32 bit integer with each bit mapped to a PAX register index The Polled Read Mask is configured in the card by the Master sending a Parameterization telegram with 4 bytes of User Parameter Data representing the Poll
5. value larger than 4095 is written to the AOR 4095 will be loaded INSTALLATION AND CONNECTION Installation Clearance Required In Inches mm a Tee C ll 4 88 124 _______ PROFIBUS DP Network Connection PROFIBUS plug connectors such as Siemens 6ES7 972 0OBA10 0XA0 are recommended When wiring the connector be sure to observe the proper direction for data flows indicated by the arrows on the connector When the PAX meter is the last device on the network set the terminating resistor switch on the connector to the ON position iF B 000 12345 o o o a to downstream PROFIBUS Network to upstream PROFIBUS Network Red Lion Controls AP Unit 101 XinAn Plaza Building 13 No 99 Tianzhou Road ShangHai P R China 200223 Tel 86 21 6113 3688 Fax 86 21 6113 3683
6. R 5 Digit PAXI DIGITAL COUNT RATE 6 Digit PAXCK DIGITAL CLOCK TIMER 6 Digit Demand Write Mask Output Service Status Input Store Mask Output Unused Input Z 5 8 9 12 o Count A Count B Count C Input Total Max Input Input A relative 13 16 Input B relative Calculation Timer Counter RTC Time oaj BI w dh a Total Min Input Rate Min Rate Max Rate Scale Factor A Min Input Setpoint 1 Setpoint 2 Setpoint 3 Setpoint 4 29 32 33 36 Max Input Input A absolute Input B absolute Scale Factor B RTC Date Setpoint 1 Setpoint 2 Setpoint 3 Setpoint 4 7 8 AOR Input A offset Scale Factor C Setpoint Off 1 CSR Input B offset Count Load A Count Load B Count Load C Setpoint 1 Setpoint 2 Setpoint 3 Setpoint 4 MMR AOR SOR Setpoint 1 Setpoint 2 Setpoint 3 Setpoint 4 MMR AOR SOR Indicates Read Only parameters All other parameters are Read Write Indicates PAX Manual Mode Registers See next section for description Indicates bit value must not be set in the Parameterization polled read masks Setpoint Off 2 Setpoint Off 3 Setpoint Off 4 Timer Start Counter Start Timer Stop Counter Stop MMR RTC Day SOR PAX MANUAL MODE REGISTERS CSR Control Status Register PAX Analog Only The Control Status Register is used to directly contr
7. ed Read Mask in Motorola byte ordering Table 2 shows the User Parameter bytes representing the Polled Read Mask and gives the default value and a typical example The default Polled Read Mask indicates PAX register index 0 will be updated in the Input Block The example Polled Read Mask indicates that PAX registers 0 and 8 will be updated in the Input Block Table 2 User Parameter Data BYTE 1 2 DESCRIPTION Polled Read Mask DEFAULT 0x00 0x00 EXAMPLE 0x00 0x00 CONFIGURATION The 2 basic PAX meter types are the Analog PAX 5 digit units and the Digital PAX 6 digit units They differ in the number of registers available and therefore the size of the Data Block required to map all the registers completely Each PAX register is represented as a 32 bit Integer requiring 2 16 bit words or 4 bytes Configuration of the Data Block is by the selection of pre configured modules identified in the GSD file as PAX Digital 6 digit and PAX Analog 5 digit that correspond to the host PAX Meter type DATA EXCHANGE Demand Write and Store Request Masks The Demand Write Mask defines how data is written to the PAX The Demand Write Mask is a 32 bit integer with each bit mapped to a PAX register index Setting a bit in the Demand Write Mask of the Output Data Block will force the corresponding register to be written once only to the PAX Clearing and re setting the bit will cause the value to be w
8. ltage exists on the circuit boards Remove all power to the meter AND load circuits before accessing the unit A Remove the main assembly from the rear of the case Squeeze the finger holds on the rear cover or use a small screwdriver to depress the side latches to release it from the case It is not necessary to separate the rear cover from the main circuit card Locate the option card connector for the serial communication card Hold the unit by the rear cover not the display board when installing an option card Install the option card by aligning the option card with the slot in the rear cover Be sure the connector is fully engaged and the tab on the option card rests in the alignment slot on the display board Slide the assembly back into the case Be sure the rear cover latches fully into the case PRINCIPLE OF OPERATION The PAX PROFIBUS DP Card provides the PROFIBUS Network with access to an Input Data Block data written to the PROFIBUS Network from the PAX and an Output Data Block data read from the PROFIBUS Network by the PAX Using an internal high speed protocol the card scans each PAX register in turn continuously reading Input Data and only writing Output Data on demand The PAX registers are mapped into each Input and Output Data Block allowing the PROFIBUS Network read write access to all the registers in the PAX The structure of these Data Blocks is described in more detail in section Data Block Structure
9. ol the meter s outputs setpoints and analog output or view the state of the setpoint outputs and the status of the temperature sensor PAXT only The CSR register is bit mapped with the bit positions of the least significant byte assigned to specific control functions The control functions are invoked by writing to the appropriate bit position The bit position definitions are bit 0 Setpoint 1 Output bit 1 Setpoint 2 Output bit 2 Setpoint 3 Output bit 3 Setpoint 4 Output bit 4 Auto Manual Mode 0 automatic mode bit 5 Unused always stays 0 0 output off bit 6 Sensor Status PAXT only 1 output on 0 sensor normal 1 sensor fail bit 7 Unused always stays 0 1 manual mode Setting bit 4 of the CSR selects Manual Mode In this mode the setpoint outputs are defined by the values written to bits b0 b1 b2 b3 and the analog output is defined by the value written to the Analog Output Register AOR Internal control of these outputs is then overridden In Automatic Mode the setpoint outputs can only be Reset off The contents of the CSR may be read to interrogate the state of the setpoint outputs and to check the status of the temperature sensor PAXT only MMR Auto Manual Mode Register PAXDP PAXI PAXCK This register sets the controlling mode for each output in the PAX meters Each output may be independently changed to Auto or Manual mode The MMR register is bit mapped with the bit positions of the least
10. ons are bit 0 Setpoint 4 Output Status bit 1 Setpoint 3 Output Status bit 2 Setpoint 2 Output Status bit 3 Setpoint 1 Output Status 0 Output Off 1 Output On Red Lion Controls 20 Willow Springs Circle York PA 17406 Tel 1 717 767 6511 Fax 1 717 764 0839 Red Lion Controls BV Printerweg 10 NL 3821 AD Amersfoort Tel 31 0 334 723 225 Fax 31 0 334 893 793 AOR Analog Output Register Not applicable to PAXCK The Analog Output Register value defines the signal level of the meter s analog output The range of values for this register is 0 to 4095 OFFFh which corresponds to the analog output signal ranges shown in Table 4 Table 4 Analog Output Signal Ranges Output Signal Register Due to the absolute accuracy _ TEUMA eerie aN rating and resolution of the output card the actual output signal may differ 0 15 FS from the table values The output signal corresponds to the range selected 0 20 mA or 0 10 V In Automatic mode the meter controls the analog output signal level Reading the AOR will show the present value of the analog output signal While in Automatic mode this register may be written to but it has no effect until the analog output is placed in the Manual mode In Manual mode writing to the AOR causes the analog output signal level to update per the value written Manual mode is engaged by setting bit 4 of the CSR PAX Analog meter or bit 0 of the MMR PAXDP PAXI If a
11. red li n Tel 1 717 767 6511 Fax 1 717 764 0839 www redlion net Bulletin No PAXCDC5 C Drawing No LP0549 Released 11 08 MODEL PAXCDC PROFIBUS DP COMMUNICATIONS OPTION CARD Paves KONNT es Par0043 A DESCRIPTION The PAX PROFIBUS DP Communications Option Card provides a direct connection for a PAX panel meter to a PROFIBUS DP Network This allows a PROFIBUS Master device such as a PLC to control and monitor the operation of the PAX meter The meter functions as an intelligent PROFIBUS DP Slave device on the Network The PROFIBUS DP Network connects through a 9 pin D subminiature female connector on the rear of the card The card is installed in the PAX meter using a slotted rear cover allowing the PROFIBUS DP Connector to extend beyond the rear of the PAX case Power for the card is provided internally from the power supply of the PAX meter The PROFIBUS DP Network is isolated from the control electronics on the card using high speed optocouplers This fully featured communications card supports Automatic Baud Rate Detection with an operating range of 9 6 Kbaud up to 12 Mbaud The Station Address is set via rotary switches The card s address is read at power up PROFIBUS DP DIAGNOSTIC ROTARY CONNECTOR LEDs SWITCHES O er ON BACK WD yy 5 mol 2o a Ch 48 MHz 000 o
12. ritten again The Demand Write Mask is part of the Data Block structure The Write Service Status register in the Input Data Block reports when the register has been written to the PAX by setting the corresponding bit By monitoring this register a PLC program can detect when the Output Data has been serviced The bit will be cleared in the Service Status register when the corresponding bit is cleared in the Demand Write Mask The Store Mask defines how the written value is to be stored in the PAX The PAX meters have some values stored in EEPROM so they may power up in the last saved state For values that change often it is possible to exceed the life of an EEPROM with repeated writes to the same address location this method inhibits writes to EEPROM The Store Mask is a 32 bit integer with each bit mapped to a PAX register index Setting a bit will inhibit the corresponding register from being saved to EEPROM Data Block Structure Table 3 shows the Data Block Structure consisting of the Write and Store Masks and the individual PAX Data Registers Each Data Register value is a 32 bit Integer with Motorola byte ordering For the Analog PAX meters the Data Block size is 48 bytes Input 48 bytes Output For the PAXDP and the Digital PAX meters the Data Block size is 84 bytes Input 84 bytes Output Table 3 Data Block Structure PAX ANALOG INPUT METER 5 Digit REGISTER INDEX Mask Bit DATA BLOCK BYTES PAXDP ANALOG INPUT METE
13. significant byte assigned to specific outputs Auto or Manual mode is selected by writing to the appropriate bit position The bit position definitions are PAXDP PAXI bit 0 Analog Output bit 1 Setpoint 4 Output bit 2 Setpoint 3 Output bit 3 Setpoint 2 Output PAXCK bit 0 Setpoint 4 Output bit 1 Setpoint 3 Output bit 2 Setpoint 2 Output bit 3 Setpoint 1 Output bit 4 Setpoint 1 Output 0 Auto Mode 1 Manual Mode In Auto Mode 0 the meter controls the setpoint output state and the Analog Output PAXDP PAXI only In Manual Mode 1 the setpoint outputs are defined by the value in the Setpoint Output Register SOR and the Analog Output is defined by the value written to the Analog Output Register AOR When transferring from Auto Mode to Manual Mode the meter holds the last output value until the register is changed by a write SOR Setpoint Output Register PAXDP PAXI PAXCK The Setpoint Output Register is used to view or change the states of the setpoint outputs in the PAX meters Reading this register will show the present state of all the setpoint outputs A 0 means the output is inactive and a 1 means the output is active In Auto Mode see MMR description the meter controls the setpoint output state In Manual Mode the four least significant bits of the SOR are assigned to specific outputs Writing to the appropriate bit position defines the state of the setpoint output The bit position definiti
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