vacon nx optcj user manual
Contents
1. VACON NX AC DRIVES OPTCJ BACNET OPTION BOARD USER MANUAL VACON DRIVEN BY DRIVES INDEX 2 1 7 1 7 2 7 3 7 4 Es Document code DPDO0901A Date edited 19 01 2012 GION E LA a o AP OO E a eat Calumet daa ee Rack unseat 3 BACnet Option Board Technical data occoccconionccccconioncnnnonccaronnnancnaronnnoncnnrcnnonncanenncnanenninns 4 Sy Stent O Ware VENSION Strait rentai caia D BACnet FIELDBUS BOARD LAYOUT AND CONNECTIONS cc ceceeceeeeeeeeeeseeeeeeeeeeeees 6 GOUGING cable shleld asia a E E E 7 Grounding by clamping the cable to the converter frame recommended ccccncoccc 7 Gro nding ony one Point on the net sste a te 8 US WOMEN PESE a dica 9 BUS Bis aa Sas 10 LED IMdICca INS idad 11 INSTALLATION OF VACON NX BACnet BOARD cccccccceeeeeeeeceeeeeeeeeeeseeeeesensaesensaeees 12 COMMISSIONING aena oa 14 Felt bus Doa rd parameters 14 Expander board menu Moa 14 BACMCU parameter cir a a 14 7 3 1 MS TP MAC address tiro cilantro tias 15 ESE A ee Neo ee 15 L33 a A Rae 15 T34 COMMUNICATION status Va tdci 16 A A eS a N 16 Toos NA A nn teat Be a cereal ee aera 16 Po A E 16 ANNEX PROTOCOL IMPLEMENTATION CONFORMANCE STATEMENT NORMATIVE 17 NAM o A o e 19 hol Bihary value OD aii sola 20 7 5 2 Analog Value OD CC Un rinisinpron carts id ocn 21 FAULT TRAGAN ins ins a a Rca 23 Tel 358 0 201 2121 e Fax 358 0 201 212 205 GENERAL VACON 3 1 G2. INDICATIONS VACON 11 9 LED INDICATIONS The two LED indications next to the connector show the present statuses of the BACnet board yellow and the Fieldbus Module green Figure 5 1 LED indications on the BACnet board BACnet board status LED BS YELLOW command from the frequency converter once sec e Option board is ready for external communication Blinking Option board is activated and in FAULT state Slow e Internal fault of option board lonce 5 secs Fieldbus status LED FS GREEN Fieldbus module is waiting for parameters from the frequency converter e No external communication Fieldbus module is activated e Parameters received and module activated e Module is waiting for messages from the bus Blinking fast Module is activated and receiving messages from the bus lonce sec Blinking Module is in FAULT state slow e No messages from Master within the watchdog time once 5 secs e Bus broken cable loose or Master off line 24 hour support 358 0 40 837 1150 Email vaconldvacon com 12 0 VACON INSTALLATION OF BACNET BOARD 6 INSTALLATION OF VACON NX BACNET BOARD A Vacon NX frequency converter Remove the cable cover C Open the cover of the control unit Tel 358 0 201 2121 e Fax 358 0 201 212 205 INSTALLATION OF BACNET BOARD VACON 13 Install BACnet option board in slot E on the control board of the frequency converter Make sure that the grounding plate see belo
3. VACON 9 3 Fix both the cables on the frame with the clamp See Figure 4 5 Figure 4 6 4 3 Bus terminal resistors ON OFF O A oo ho Figure 4 8 Using jumper X4 to set the bus termination If Vacon is the last device of the fieldbus line the bus termination must be set Use jumper X4 ON position See Figure 4 7 Note Jumper X1 is only used when D9 type connector is assembled Not used with BACnet protocol 24 hour support 358 0 40 837 1150 e Email vaconldvacon com 10 VACON GROUNDING CABLE SHIELD 4 4 Bus Biasing Bus biasing is required to ensure faultless communication between devices at RS 485 bus Bus biasing makes sure that the bus state is at proper potential when no device Is transmitting Without biasing faulty messages can be detected when the bus is In Idle state RS 485 bus state should be neather 0 200 7V or 0 200 7V Illegal bus state is lt 200mV 200mV Number of nodes 1 8 kohm 2 7 kohm 11 20 12 kohm 21 30 18 kohm 31 40 27 kohm Table 4 1 Bias resistor size vs number of node Fail safe b asing in OPT CJ option board Connect resistor biasing resistors between pins 2 and 4 as well as pins 3 and 5 as shown In picture DATAA DATA B Matters related to this are discussed in the application note Fa lsafe Biasing of Differential Buses an 847 pdf published by National Semiconductor www national com Tel 358 0 201 2121 e Fax 358 0 201 212 205 LED
4. if a warning is OK Warning active BVO Ref Frequency reached False True BV6 Motor Running at zero False True speed BV7 General 0 Application specific bit 0 1 from drives General Status Word BV8 General 1 Application specific bit 0 1 from drives General Status Word BV9 General 2 Application specific bit 0 1 from drives General Status Word BV10 General 3 Application specific bit 0 1 from drives General Status Word BV11 General 4 Application specific bit 0 1 from drives General Status Word BV12 General 5 Application specific bit 0 1 from drives General Status Word BV13 General 6 Application specific bit 0 1 from drives General Status Word BV14 General 7 Application specific bit from drives General Status Word FB control is active BV16 Fwd Rev CMD Command to change Fwd Rev rotational direction FB control is active BV17 Reset Fault Command to reset 0 Reset Active Fault from dirve BV18 FBFixedControlWord Application Specific bit Bit_3 From the Fixed Control Word FBFixedControlWord Application Specific bit Bit_4 From the Fixed Control Word BV19 BV20 FBFixedControlWord Application Specific bit Bit_5 From the Fixed Control Word BV21 FBFixedControlWord Application Specific bit Bit_6 From the Fixed Control Word Tel 358 0 201 2121 e Fax 358 0 201 212 205 COMMISSIONING FBFixedControlWord Bit_7 FBFixedControlWord Bit_8 FBFixedControlWord Bit_9 FBFi
5. produit contenant l ensemble des informations de s curit avertissements et mises en garde applicables sur le site www vacon com downloads 24 hour support 358 0 40 837 1150 Email vaconldvacon com 4 0 VACON TECHNICAL DATA 2 BACNET OPTION BOARD TECHNICAL DATA Connections Interface OPT CJ Pluggable connector 5 08mm Data transfer RS 485 MS TP half duplex method Transfer cable Twisted pair 1 pair and shield Electrical isolation 500 VDC Communications BACnet MS TP As described in ANSI ASHRAE Standards 135 2004 Baud rate 9600 19200 38400 and 76800 baud supports autobaud detection temperature temperature Vibration a Fulfils EN50178 standard O Table 2 1 BACnet technical data Tel 358 0 201 2121 e Fax 358 0 201 212 205 LAYOUT AND CONNECTIONS VACON 5 2 1 System Software versions OPT CJ BACnet option board is supported from system software versions e NXL NXLOO005V149 VCN NXS NXS00001V161 VCN e NXP NXP00002V160 VCN Autobaud detection and BACnet specific fault codes readable from panel are added from system software versions e NXL NXLOOO005V248 VCN e NXS NXS00001V163 VCN e NXP NxXP00002V162 VCN Communication timeout is available from system SW versions When not supported the default is 10 seconds e NXL NXLOO0005V254 VCN NXS NXS00001V167 VCN e NXP NXP00002V168 VCN OPT CJ software version OPTCJ_10522V009 and newer New baud rate 76800 from software versions e N
6. ENERAL INFO Instead of sending and receiving information to and from frequency converters through I O you can connect them to a fieldbus Vacon NX frequency converters can be connected to the RS 485 bus using a fieldbus board The converter can then be controlled monitored and programmed from the host system BACnet is also known by names Direct Digital Control Systems and Building Management Systems BACnet technology is used mostly in building automation lightning control air conditioning and in heating automation The protocol is an upper level net protocol suitable for large building automation projects BACnet stands for Building Automation and Control Network BACnet Is a true non propriatery open protocol communication standard conceived by a consortium of building management system users and manufacturers If you purchase your BACnet option board separately please note that it shall be installed in slot E on the control board of the frequency converter Internal components and circuit boards are at high potential when the frequency converter is connected to the power source This voltage is extremely dangerous and may cause death or severe injury if you come into contact with it WARNING NOTE You can download the English and French product manuals with applicable safety warning and caution information from www vacon com downloads REMARQUE Vous pouvez t l charger les versions anglaise et francaise des manuels
7. MAC ID Check MAC Addresses 3 Baudrate fault Option card notices traffic but can t lock Check Baudrate to the selected baudrate lable 8 3 BACnet specific faults Tel 358 0 201 2121 e Fax 358 0 201 212 205 FAULT TRACKING VACON 25 The MSTP and BACnet stack on the option board uses files from BACnetSim a GPL d project on SourceForge The licence for BACnetSim is GPL with a special exception that allows linking without requiring the rest of the code to be GPL d The source code for the GPL d parts can be downloaded from SourceForge 24 hour support 358 0 40 837 1150 Email vacon avacon com VACON DRIVEN BY DRIVES Find your nearest Vacon office on the Internet at WWW Vacon com Manual authoring documentationldvacon com Vacon Plc Runsorintie 7 65380 Vaasa Finland Subject to change without prior notice 2012 Vacon Plc D P D 0 QO
8. XL NXLO0005V257 VCN e NXS NXS00001V170 VCN e NXP NXP00002V171 VCN 24 hour support 358 0 40 837 1150 Email vacon avacon com 6 0 VACON TECHNICAL DATA 3 BACNET FIELDBUS BOARD LAYOUT AND CONNECTIONS Vacon BACnet option board is connected to the fieldbus through a 5 pin pluggable bus connector The communication with the control board of the frequency converter takes place through the standard Vacon Interface Board Connector Bus connector Interface board connector Grounding plate Figure 3 1 Vacon BACnet option board OPT CJ Signal Description NC No connection Supply voltage plus 5V RxD TxD N Receive Transmit data A 5 RxD TxD P Receive Transmit data B DGND 5 Data ground reference potential for VP You can use this pin 1 to bypass the cable shield to the next slave Table 3 7 OPT CJ bus connector signals Tel 358 0 201 2121 e Fax 358 0 201 212 205 GROUNDING CABLE SHIELD VACON 7 4 GROUNDING CABLE SHIELD 4 1 Grounding by clamping the cable to the converter frame recommended This manner of grounding is the most effective and especially recommended when the distances between the devices are relatively short or if the device is the last device on the net Note Normally the option board has already been installed in slot D or slot E of the control board It is not necessary to detach the whole board for the grounding of the bus cable shield Just detach the terminal bloc
9. esettable resettable Kilowatt Hours kWh resettable Z Z pm Torque Reference NOT core IN NXL series 24 hour support 358 0 40 837 1150 Email vacon avacon com Present Value Access Type 22 0 VACON COMMISSIONING AV14 Calculated motor Percent temperature 100 0 Temperature Rise nominal temperature of motor NOT IN NXL series AV15 7 FBProcessDataQut1 Application specific 32768 0 to 32767 0 resolution 1 0 AV16 7 FBProcessDataOut2 Application specific 32768 0 to 32767 0 resolution 1 0 AV17 i FBProcessDataQut3 Application specific 32768 0 to 32767 0 resolution 1 0 AV18 FBProcessDataOut4 Application specific 32768 0 to 32767 0 resolution 1 0 AV19 FBProcessDataOut5 Application specific 32768 0 to 32767 0 resolution 1 0 AV20 FBProcessDataOut6 Application specific eg to 32767 0 resolution 1 0 AV21 l FBProcessData0ut7 Application specific 32768 0 to 32767 0 resolution 1 0 AV22 7 FBProcessData0Out8 Application specific 32768 0 to 32767 0 resolution 1 0 AV23 Active Fault Code Active Fault Code AV24 Speed Reference Percent Speed Reference percentage of nominal speed AV30 i FBProcessDatalN 1 Application specific 32768 0 to 32767 0 resolution 1 0 AV31 f FBProcessDatalN 2 Application specific 32768 0 to 32767 0 resolution 1 0 AV32 i FBProcessDatalN 3 Application specific 327608 0 to 32767 0 resolution 1 0 resolution 1 0 in AV35 resolution 1 0 AV34 resolution AV36 FBFixedCo
10. istrations by Foreign Devices O Yes O No Character Sets Supported Indicating support for multiple character sets does not imply that they can all be supported simultaneously m ANSI X3 4 OI IBM Microsoft DBCS O ISO 8859 1 O ISO 10646 UCS 2 O ISO 10646 UCS 4 O JIS C 6226 If this product is a communication gateway describe the types of non BACnet equipment networks s that the gateway supports Tel 358 0 201 2121 e Fax 358 0 201 212 205 COMMISSIONING VACON 19 7 5 Object Map Object types and properties supported Property Object Type Value Object identite X x Object Name Object Type gt lt Number ADPU Retries X Out of Service Units Priority Array Relinguish Default Polarity Active Text Inactive Text Figure 7 3 Object types and properties supported L__ es eee re C TINO es ee a OOOO a E OO POD FONOS PO ee rs FONOS o ee es ION POMO OOOO PACO ee rs OOOO POS ee a ey AA PO ee IS X O S AE ee i IE _e O X J Only with commandable values 24 hour support 358 0 40 837 1150 Email vacon avacon com 20 VACON COMMISSIONING 7 5 1 Binary Value Object Instance ID Object Name Inactive Active BVO Ready State Indicates whether the Not Ready Ready drive is ready or not BV1 Run Stop State Indicates whether the Stop Run drive is running or stopped Present Value Access Type direction of the motor active BV4 Warning State Indicates
11. k 1 Strip about 5 cm of the cable and cut off the grey cable shield Remember to do this for both bus cables except for the last device See pictures below 2 Leave no more than 1 cm of the cable outside the terminal block and strip the data cables at about 0 5 cm to fit in the terminals See pictures below Note Do this for both bus cables Figure 4 1 Figure 4 2 24 hour support 358 0 40 837 1150 e Email vaconldvacon com 8 0 VACON GROUNDING CABLE SHIELD 3 Insert the data cables of both cables into terminals 3 Line B and 4 Line A 4 Strip the cable at such a distance from the terminal that you can fix it to the frame with the grounding clamp See pictures below Figure 4 3 4 2 Grounding only one point on the net In this manner of grounding the shield is connected to ground only at the last device on the net In the same way as described in chapter 4 1 Other devices of the net just pass the shield We recommend you to use an Abico connector to fit the shields into the terminal 1 Strip about 5 cm of the cable and cut off the grey cable shield Remember to do this for both bus cables except for the last device 2 Leave no more than 1 cm of the cable outside the terminal block and strip the data cable at about 0 5 cm to fit in the terminals See Figure 4 4 Shield A B Figure 4 3 Note Do this for both cables Tel 358 0 201 2121 e Fax 358 0 201 212 205 GROUNDING CABLE SHIELD
12. lts related to the BACnet option board For more information see also Vacon NX User s Manual Chapter 9 The BACnet option board status LEDs have been described in more detail in Chapter 5 Fault Fault Possible cause Correcting measures code Option board changed Reset Device added Option board added Reset Option board removed Reset 40 Device Unknown option board unknown Fieldbus fault The board has lost all contact with other Check the installation devices on the network If installation is correct contact the Duplicate MAC ID Bad Frames in nearest Vacon distributor Comm status is incremented every Check that MAC ID is unique time a frame is received from a device with the same MAC id on the same segment 54 Slot fault Defective option board or slot Check the board and slot Contact the nearest Vacon distributor Table 8 1 RS 485 option board faults You can define with parameters how the frequency converter shall react to certain faults Parameter O No response Response to fieldbus 1 Warning fault 2 Fault stop acc to 2 4 7 3 Fault stop by coasting O No response Response to slot 1 Warning fault 2 Fault stop acc to 2 4 7 3 Fault stop by coasting lable 8 2 Frequency converter responses to faults These BACnet Specific fault codes can be read from panel V7 x 2 3 x is the used D 4 E 5 1 SoleMaster Only device on the network Add devices Duplicate MAC ID Some other device has the same
13. ntrolWord PDI 0 1 see next page AV37 FBGeneralControlWord PDI 1 2 see next page AV38 FBFixedStatusWord PDO 0 3 see next page AV39 NOTE For Present Value Access Types R Read only W Writeable C Commandable Commandable values support priority arrays amp relinquish defaults Tel 358 0 201 2121 e Fax 358 0 201 212 205 FAULT TRACKING VACON 23 Note These Analog Value objects are introduced in BACnet SW version OPTCJ_10522V009 vcn 1 FBFixedControlWord PDI 0 bit encoding All in One Applications BO RUN O Stop 1 Run B1 DIRECTION O Fwd 1 Rev B2 FaultRST Reset on rising edge B3 15 Application Specific 2 FBGeneralControlWord PDI 1 bit encoding Application Specific 3 FBFixedStatusWord MCStatus PDO 0 bit encoding BO Ready O not ready 1 ready B1 Run O stopped 1 running B2 Direction O clockwise 1 counterclockwise B3 Fault 1 the FC is faulted and stopped 7 B4 Warning 1 warning Bo AtReference l at reference speed B ZeroSpeed l at zero speed B7 FluxReady 1 flux ready B8 TCSpeedLimitActive B9 DetectedEncoderDirection B10 UVFastStop B11 DC brake status 1 DC brake active B12 15 Firmware Specific Not all the bits are supported In every application 4 FBGeneralStatusWord PDO 1 bit encoding Application Specific 24 hour support 358 0 40 837 1150 Email vacon avacon com 24 0 VACON FAULT TRACKING 8 FAULT TRACKING The table below presents the fau
14. p level where there are two groups Editable parameters and Monitored values A further press on the Menu button right takes you to either of these groups 7 3 BACnet parameters To commission the RS 485 board enter the level P7 5 1 from the Parameters group G7 5 1 Give desired values to all RS 485 parameters see Figure 7 1 and Table 7 1 READY ED M1 ED G15 CD Expander Board NXOPTCJ dd Parameters G13G2 READY N EN 57151165 5151 05 CHANGE VALUE Slave address Slave address 126 126 CONFIRM CHANGE 7 Figure 7 1 Changing the BACnet board commissioning parameter values Tel 358 0 201 2121 e Fax 358 0 201 212 205 COMMISSIONING VACON 15 Default Range Description psc Ress MAC ADDRESS a BAUD RATE 0 Auto Communication speed 1 9600 baud 2 19200 baud 3 38400 baud 4 76800 baud INDEX NR Counts Instance Number Zero means that J 0 65535 unique default device object instance number number is used 4 Comm time out 105 0 OFF Communication time out 10 60s 0 Not in use Table 7 1 BACnet option board parameters 7 3 1 MS TP MAC address P7 x 1 1 The parameters of every device must be set before connecting to the bus Especially the parameters MAC Address and Baud Rate must be the same as in the master configuration The first parameter MAC Medium Access Control address must be unique on the network to which it is connected The same MAC address ma
15. t all BACnet Interoperability Building Blocks Supported Annex K DS RP B DS WP B DM DDB B DM DOB B Segmentation Capability O Segmented requests supported Window Size O Segmented responses supported Window Size Standard Object Types Supported An object type is supported If it may be present in the device For each standard Object Type supported provide the following data 1 Whether objects of this type are dynamically creatable using the CreateObject service 2 Whether objects of this type are dynamically deletable using the DeleteObject service 3 List of the optional properties supported 4 List of all properties that are writable where not otherwise required by this standard 5 List of proprietary properties and for each its property identifier datatype and meaning 6 List of any property range restrictions Data Link Layer Options MS TP master Clause 9 baud rate s 9600 19200 34800 76800 supports autobaud detection Device Address Binding Is static device binding supported This is currently necessary for two way communication with MS TP slaves and certain other devices Yes E No 24 hour support 358 0 40 837 1150 Email vacon avacon com 18 0 VACON COMMISSIONING Networking Options O Router Clause 6 List all routing configurations e g ARCNET Ethernet Ethernet MS TP etc O Annex H BACnet Tunneling Router over IP O BACnet IP Broadcast Management Device BBMD Does the BBMD support reg
16. tting the time out time is 10 seconds 24 hour support 358 0 40 837 1150 Email vacon avacon com 16 0 VACON COMMISSIONING 7 3 5 Communication status V7 x 2 1 To see the present status of the RS 485 fieldbus enter the Comm Status page from Monitor menu G 7 5 2 See Table 7 2 and Table 7 2 below Lood messages Bad Frames Figure 7 2 Communication status Good messages 0 999 Number of messages received without communication errors Bad Frames 0 64 Number of messages received with CRC or parity errors lable 7 2 BACnet message indications 7 3 6 Baud Rate V7 x 2 2 Shows the actual baud rate y Fault V7 x 2 3 Shows BACnet fault codes See Table 8 3 from Chapter 8 7 3 8 Index Nr V7 x 2 4 Shows the Device Object s Instance number Tel 358 0 201 2121 e Fax 358 0 201 212 205 COMMISSIONING VACON 17 7 4 ANNEX PROTOCOL IMPLEMENTATION CONFORMANCE STATEMENT NORMATIVE This annex is part of this Standard and is required for its use BACnet Protocol Implementation Conformance Statement Date May 31 2005 Vendor Name Vacon Product Name Vacon Drive xxx xxx MAC ID Product Model Number OPTCJ Applications Software Version 10522 Firmware Revision __ 1 BACnet Protocol Revision 4 Product Description BACnet Option board is designed for Vacon NX family devices BACnet Standardized Device Profile Annex L BACnet Application Specific Controller B ASC Lis
17. w fits tightly in the clamp Make a sufficiently wide opening for your cable by cutting the grid as wide as necessary F Close the cover of the control unit and the cable cover 24 hour support 358 0 40 837 1150 e Email vaconldvacon com 14 0 VACON COMMISSIONING 7 COMMISSIONING READ FIRST CHAPTER 8 COMMISSIONING IN VACON NX USER S MANUAL Document nr ud00701 please visit http www vacon com Default aspx id 450403 amp FileView 462792 Note You must select Fieldbus as the active control place if you wish to control the frequency converter through fieldbus See Vacon NX User s Manual Chapter 7 3 3 1 7 1 Fieldbus board parameters The Vacon BACnet board is commissioned with the control keypad by giving values to appropriate parameters in menu M7 for locating the expander board menu see Vacon NX User s Manual Chapter 7 7 2 Expander board menu M7 The Expander board menu makes it possible for the user 1 to see what expander boards are connected to the control board and 2 to reach and edit the parameters associated with the expander board Enter the following menu level G with the Menu button right At this level you can browse through slots A to E with the Browser buttons to see what expander boards are connected On the lowermost line of the display you also see the number of parameter groups associated with the board If you still press the Menu button right once you will reach the parameter grou
18. xedControlWord Bit_10 FBFixedControlWord Bit_11 FBFixedControlWord Bit_12 FBFixedControlWord Bit_13 FBFixedControlWord Bit_14 FBFixedControlWord Bit_15 Application Specific bit From the Fixed Control Word Application Specific bit From the Fixed Control Word Application Specific bit From the Fixed Control Word Application Specific bit From the Fixed Control Word Application Specific bit From the Fixed Control Word Application Specific bit From the Fixed Control Word Application Specific bit From the Fixed Control Word Application Specific bit From the Fixed Control Word Application Specific bit From the Fixed Control Word VACON 21 NOTE For Present Value Access Types R Read only W Writeable C Commandable Commandable values support priority arrays amp relinquish defaults 7 5 2 Analog Value Object Instance ID AVO AV1 AV2 AV3 AV4 AVS AV6 AV7 AV8 V9 AV13 Object Name Frequency Setpoint Output Frequency Motor Speed Load power Kilowatt Hours total Motor Current DC link Voltage Motor Voltage Unit Temperature Motor Torque Operating Days Operating Hours Kilowatt Hours Torque Reference Frequency Setpoint H Output Frequency H Motor Speed R Motor Shaft Power Percent Megawatt Hour Counter kWh Total DC link Voltage Volts Motor Voltage Volts Heatsink Temperature ae NOT IN NXL series In of motor nominal Percent Torque r
19. y be used on a device on another network within the internetwork Addresses 128 254 are reserved for slaves Addresses 1 127 are valid for both masters and slaves The portion of the address space that Is actually used for masters In a particular installation is determined by the value of the Max_Master property of the Device object It is recommended that MAC address 0 be reserved for use by the MS TP router and 255 is reserved for broadcasts 7 3 2 Baud rate P7 x 1 2 Select the communication speed for the network Default value is 9600 baud 0 Auto means that automatic baud rate detection is used The used Baudrate Is shown in monitor menu 7 3 3 Instance number P7 x 1 3 The Device Object s Instance number must be unique across the entire BACnet internetwork because it is used to uniquely identify the BACnet devices It may be used to conveniently identify the BACnet device from other devices during installation If O default is selected the Device Instance number is read from Drive This unique number is then shown in Monitor menu If any other value than zero Is selected the value Is used as Device Object s Instance number The actual value is shown in monitor menu 7 3 4 Communication time out BACnet board initiates a communication error if the communication is broken for as long as defined by the parameter Communication time out Communication time out Is disabled when the parameter is given the value 0 The step for se
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