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I need to communicate with a micrologix 1400. When i attempt to do so, I get error code 3.
I am new to modbus messaging and haven't had alot of experience with it, so thank you in advance for any help you can give me.
I am trying to poll 1 analog value in register 40001.
Comms are at 9600, 8N1.
Byte order is Bigendian, type is r4 (is this correct for the micrologix 1400?) As for the request, im using function code 3 with a byte length of 2.
Modbus rtu message that goes out to the device is:
01 03 9C 41 00 01 FA 4E
response from device is:
01 83 03 01 31
any help would be appreciated.
I am new to modbus messaging and haven't had alot of experience with it, so thank you in advance for any help you can give me.
I am trying to poll 1 analog value in register 40001.
Comms are at 9600, 8N1.
Byte order is Bigendian, type is r4 (is this correct for the micrologix 1400?) As for the request, im using function code 3 with a byte length of 2.
Modbus rtu message that goes out to the device is:
01 03 9C 41 00 01 FA 4E
response from device is:
01 83 03 01 31
any help would be appreciated.