Writing a PLC Communicator

[sharky]

Hello I have a PLC Communicator, and I used it to see how the computer and the FX2N PLC are communicating. For a program like this: LOAD X000 OUT Y000 END the PLC Comunicator sends to the PLC the following code: 82 C5 B1 B1 B8 30 35 C3 B4 30 30 30 B2 B4 30 30 C3 35 30 C6 30 30 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 C6 03 B1 41 In this vector the last 3 bytes are in my opinion a CRC Can anyone tell me how to calculate this CRC? You can tell me here or at voxink@yahoo.com Thanks