bluffit
Member
This is my first post to the group. It's also the first day of trying to integrate my PLC (A DirectLogic 06) with a PT100 RTU heat sensor monitor: http://www.contrel.it/eng/ctt8.php over Modbus RTU. ( See manual attached ).
Having dug into the manual, I am now very concerned that my expensive investment in this analog data capture unit may have been misplaced. The manual for its modbus communications indicates that I have to create a CRC of the data I'm sending. However, the DirectLogic 06 PLC has no CRC function, or from what I can see no advanced math/string library or even bitwise operations.
Am hoping that this is all my misundertanding, but any help would be much appreciated.
On a final note, I'm a software guy, and hardware terrifies. me. I hope this won't be another of "those" experiences! sigh.
Having dug into the manual, I am now very concerned that my expensive investment in this analog data capture unit may have been misplaced. The manual for its modbus communications indicates that I have to create a CRC of the data I'm sending. However, the DirectLogic 06 PLC has no CRC function, or from what I can see no advanced math/string library or even bitwise operations.
Am hoping that this is all my misundertanding, but any help would be much appreciated.
On a final note, I'm a software guy, and hardware terrifies. me. I hope this won't be another of "those" experiences! sigh.