APPX
Appendix 1  Error Codes
785
A
CFE8H Cyclic 
transmission 
error (slave 
station)
• There is no response from slave station. • Check the slave station disconnection detection setting in 
master station parameter (Network Configuration Settings).
• Check the existence status of slave station in network.
• Check the slave station which is disconnected.
• Take measures to reduce noise.
CFE9H Cyclic 
transmission 
error (slave 
station)
• The slave station of the same IP address has existed in the 
same network address.
• Check the slave station where the error occurred
CFF0H Slave station 
error
• The error occurred in slave station. • Check the slave station where the error occurred.
Error 
code
Error name Error details and cause Action