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| 2/10/2009 4:29 AM | |
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Posts: 20 Rating:
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Hi, I have CP443-1 and Modbus TCP function block, however it only supports FC 03,06 .How can I read digital values? Any suggestion will be appreciated. |
| 2/10/2009 5:43 PM | |
Joined: 3/3/2006 Last visit: 10/10/2024 Posts: 29 Rating:
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Hello! We use in Modbus communication standard communication blocks FC5and FC6 becouse there is no blocks for examblefunction code 4 (read input register).You just need to know specification of Modbus protocol and then You can do Your telegram Youself. If You are interested, I can checksome exambles. Modbus information: http://www.modbus-ida.org/docs/Modbus_Application_Protocol_V1_1b.pdf |
| 2/11/2009 10:47 AM | |
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Posts: 3093 Rating:
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function code 4 is already available |
| 2/11/2009 11:02 AM | |
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Posts: 20 Rating:
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How can we use this function code,it is not supported by this software. |
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