User manual

108
2-step communication method
4-step communication method
No communication error
Peripheral
device
PLC
Peripheral
device
PLC
Peripheral
device
PLC
When R is not received
Response to repeated function code
3 seconds
No communication error
Peripheral
device
PLC
Peripheral
device
PLC
Peripheral
device
PLC
When QA is not received
Peripheral
device
PLC
When R is not received
Response to repeated function code
3 seconds
For the internal processing of the
PLC CPU send RR at least 5 msec
after receiving QA.
3 seconds