Verification Operation Of Receive Packet - Mitsubishi Electric MELSEC iQ-R Series User Manual

Verification operation of receive packet

The following shows C24 operation when data that are different from the specified receive packet are received.
Receive data prior to the different data is discarded. Data is compared again from the start of the receive packet, and once the
data matches the receive packet, the data receiving operation is processed.
Specified
STX
receive packet
Same
Receive data
STX
Specified
STX
receive packet
Same
Receive data
STX
APPENDICES APPENDIX
526
Appendix 5 Operation Image and Data Structure of Predefined Protocol
'1' '2' '3' '4'
Same Same Same Different
'1' '2' '3' STX
Discarded
'1' '2' '3' '4'
Same Same Same Same
'1' '2' '3' '4'
'5' '6' ETX
'1' '2' '3' '4'
'5' '6' ETX
Same Same Same
'5' '6' ETX
→Verification match
'5' '6' ETX