Operations; B.4.4 Operations - GE F650 Instruction Manual

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B.4 MODBUS APPENDIX

For executing an Operation, it is necessary to write the bit corresponding to that Operation. For this purpose, there are two

memory records whose bits represent operations. These records are 0xAFFE and 0xAFFF.

Each operation has assigned one bit in the register:

Operation 1: bit 0 '0xaffe'

Operation 2: bit 1'0xaffe'

Operation 16: bit 15'0xaffe'

Operation 17: bit 0'0xafff'

Operation 24: bit 7'0xafff'

The register format is 'MOTOROLA'; this means that the first byte arriving is the one with more weight.

Remember that depending on where it communicates the correspondent channel will be activated, which takes part for

PLC operations if the operation is successful or not. The operations channels are:

1 - OPER REMOTE

2 - COM 1- COMMUNICATION

3 - COM 2- COMMUNICATION

4 - RED 1- COMMUNICATION

5 - RED 2- COMMUNICATION

6 - RED 3- COMMUNICATION

7 - RED 4- COMMUNICATION

Example, operation 1 is going to be perform:

[0xFE 0x10 0xAF 0xFE 0x00 0x01 0x02 0x00 0x01 0x68 0xB0] ---------> RELAY

PC <--------- [0xFE 0x10 0xAF 0xFE 0x00 0x01 0x55 0x22] (ACK (acknowledge) the operation)

F650 Digital Bay Controller

GEK-106310AB