# read modbus in OPC **URL:** \ **Category:** Digi One IA/IAP\ **Created:** [September 7, 2012, 3:42pm UTC](https://forums.digi.com/t/read-modbus-in-opc/7519 "2012-09-07T15:42:16Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![ebarraganifd](https://avatars.discourse-cdn.com/v4/letter/e/919ad9/32.png) [@ebarraganifd](https://forums.digi.com/u/ebarraganifd)\ **Post date:** [September 7, 2012, 3:42pm UTC](https://forums.digi.com/t/read-modbus-in-opc/7519/1 "2012-09-07T15:42:16Z")
Hello world. I’m using a ConnectPort X4, a Xbee SmartPlug and Xbee sensor. My CPX4 Model: ConnectPort X4 Firmware: 2.15.0.6 (Version 82001536\_L 07/25/2012) POST: 1.1.3 (release\_82001753\_F) I need to read smart plug and sensor variables in a OPC server(Kepserver). this is my configuration for IA: #\> show ia all set ia table=1 state=on name=Modbus Sensor family=modbus accessmode=multi set ia table=1 ownerperiod=15000 set ia table=1 addroute=1 set ia table=1 route=1 active=on type=ip protaddr=1-10 protocol=modbustcp set ia table=1 route=1 transport=udp connect=passive address=127.0.0.1 set ia table=1 route=1 ipport=8502 replaceip=off slavetimeout=1000 set ia table=1 route=1 chartimeout=50 idletimeout=0 lineturnmode=off set ia table=1 route=1 fixedaddress=0 rbx=off IA Serial: Nothing Configured set ia master=1 active=on type=tcp ipport=502 protocol=modbustcp table=1 set ia master=1 priority=medium messagetimeout=5500 chartimeout=50 set ia master=1 idletimeout=0 lineturnmode=off errorresponse=on set ia master=1 broadcast=replace set ia master=2 active=on type=udp ipport=502 protocol=modbustcp table=1 set ia master=2 priority=medium messagetimeout=5500 chartimeout=50 set ia master=2 idletimeout=0 lineturnmode=off errorresponse=on set ia master=2 broadcast=replace this is a trace: #\> set trace state=on mask=ia:i 1102418:ia:INFO:mbtcp:m00 recv req 250 1102421:ia:INFO:mbtcp:s00 send req 250 1102549:ia:INFO:mbtcp:s00 recv resp 250 1102549:ia:INFO:mbtcp:s00 last message, 127 msec to complete 1102549:ia:INFO:mbtcp:s00 start rsp min:15 avg:124 max:322 msec 1102549:ia:INFO:mbtcp:s00 full rsp min:15 avg:124 max:323 msec 1102552:ia:INFO:mbtcp:m00 last message, 134 msec to complete 1102553:ia:INFO:mbtcp:m00 send resp 250 1102553:ia:INFO:mbtcp:m00 full rsp min:62 avg:130 max:242 msec 1132245:ia:INFO:mbtcp:m00 recv req 251 1132250:ia:INFO:mbtcp:s00 send req 251 1132389:ia:INFO:mbtcp:s00 recv resp 251 1132389:ia:INFO:mbtcp:s00 last message, 139 msec to complete 1132389:ia:INFO:mbtcp:s00 start rsp min:15 avg:124 max:322 msec 1132389:ia:INFO:mbtcp:s00 full rsp min:15 avg:125 max:323 msec 1132393:ia:INFO:mbtcp:m00 last message, 147 msec to complete 1132393:ia:INFO:mbtcp:m00 send resp 251 1132393:ia:INFO:mbtcp:m00 full rsp min:62 avg:131 max:242 msec 1162924:ia:INFO:mbtcp:m00 recv req 252 1162928:ia:INFO:mbtcp:s00 send req 252 1162982:ia:INFO:mbtcp:s00 recv resp 252 1162983:ia:INFO:mbtcp:s00 last message, 54 msec to complete 1162983:ia:INFO:mbtcp:s00 start rsp min:15 avg:121 max:322 msec 1162983:ia:INFO:mbtcp:s00 full rsp min:15 avg:121 max:323 msec this is my yml file: devices: - name: xbee\_device\_manager driver: devices.xbee.xbee\_device\_manager.xbee\_device\_manager:XBeeDeviceManager - name: xbee\_autoenum driver: devices.xbee.xbee\_devices.xbee\_autoenum:XBeeAutoEnum settings: discover\_rate: 600 xbee\_device\_manager: “xbee\_device\_manager” devices: - name: “auto\_sensor” driver: “devices.modbus.mbdia\_xbee\_sensor:MBusXBeeSensor” settings: sleep: true sample\_rate\_ms: 12000 awake\_time\_ms: 1000 - name: “auto\_smart\_plug” driver: “devices.modbus.mbdia\_xbee\_rpm:MBusXBeeRPM” settings: sample\_rate\_ms: 10000 default\_state: “Off” device\_profile: “fluor-mag” - name: mbus driver: devices.modbus.mbus\_udp\_device:MBusUDPDevice settings: poll\_rate\_sec: 30 udp\_peer: (‘127.0.0.1’,502) trace: ‘debug’ round: 3 poll\_list: - poll: in01 pollinfo: { ‘uid’:1, ‘fnc’:3, ‘ofs’:0, ‘cnt’:20 } channels: - parse: { ‘nam’:‘panel’, ‘ofs’:3, ‘frm’:‘]H’, ‘unt’:‘vdc’, ‘typ’:‘float’, ‘expr’:‘(%d/1000.0)\*3.25’ } - parse: { ‘nam’:‘battery’, ‘ofs’:4, ‘frm’:‘]H’, ‘unt’:‘vdc’, ‘typ’:‘float’, ‘expr’:‘(%d/1000.0)\*3.25’ } - parse: { ‘nam’:‘load’,‘ofs’:5,‘frm’:‘]H’,‘unt’:‘vdc’, ‘typ’:‘float’, ‘expr’:‘(%d/1000.0)\*3.25’ } loggers: - name: embedded\_log driver: channels.logging.file\_logger.file\_logger:FileLogger settings: filename: “WEB/python/idigi\_dia.log” event\_volume\_size\_k: 256 presentations: - name: web driver: presentations.web.web:Web settings: page: “idigi\_dia” polling: 1 use\_default\_httpserver: false - name: console0 driver: presentations.console.console:Console - name: mbus\_srv driver: presentations.modbus.mbdia\_pres:MbDiaPresentation settings: mapping: “(‘auto’, 1, 20)” auto\_enum\_name: “xbee\_autoenum” this is my mbus\_map.txt # Dia Modbus Server unit\_id mapping as of 2012-09-07 13:52:18 1,‘IFD - Smart Plug’,‘XBeeRPM’,‘[00:13:a2:00:40:60:f3:3a]!’ 2,‘IFD - Sensor’,‘XBeeSensor\_LT’,‘[00:13:a2:00:40:69:05:09]!’ I follow all about modbus with this pages: > **[Digi Python Wiki Archive](https://docs.digi.com/resources/documentation/digidocs/90001537/)** > **[Digi Python Wiki Archive](https://docs.digi.com/resources/documentation/digidocs/90001537/)** Everything seems ok, but I cant read what I need In Kepware this is the result: Device ‘digi.CPX4’ block request [400001 to 400001] responded with exception 6 In modbuspoll I get: Slave Device Busy I need help to make it work properly… Thanks a lot, see you soon. ---
**Author:** ![ebarraganifd](https://avatars.discourse-cdn.com/v4/letter/e/919ad9/32.png) [@ebarraganifd](https://forums.digi.com/u/ebarraganifd)\ **Post date:** [September 8, 2012, 4:34pm UTC](https://forums.digi.com/t/read-modbus-in-opc/7519/2 "2012-09-08T16:34:10Z")
I have deleted the IA table I created before, so the Dia server create a valid table. #\> show ia all set ia table=1 state=on name=DiaModbus family=modbus accessmode=multi set ia table=1 ownerperiod=15000 set ia table=1 addroute=1 set ia table=1 route=1 active=on type=ip protaddr=0-255 protocol=modbustcp set ia table=1 route=1 transport=udp connect=passive address=127.0.0.1 set ia table=1 route=1 ipport=8502 replaceip=off slavetimeout=1000 set ia table=1 route=1 chartimeout=50 idletimeout=0 lineturnmode=off set ia table=1 route=1 fixedaddress=0 rbx=off IA Serial: Nothing Configured set ia master=1 active=on type=tcp ipport=502 protocol=modbustcp table=1 set ia master=1 priority=medium messagetimeout=5500 chartimeout=50 set ia master=1 idletimeout=0 lineturnmode=off errorresponse=off broadcast=off set ia master=2 active=on type=udp ipport=502 protocol=modbustcp table=1 set ia master=2 priority=medium messagetimeout=5500 chartimeout=50 set ia master=2 idletimeout=0 lineturnmode=off errorresponse=off broadcast=off But nothing yet… Any idea please… Thanks, see you soon.