10. TROUBLESHOOTING
IMR02E20-E1
104
Host communication (RKC communication)
Problem Probable
cause
Solution
No response Wrong connection, no connection or
disconnection of the communication cable
Confirm the connection method or
condition and connect correctly
Breakage, wrong wiring, or imperfect
contact of the communication cable
Confirm the wiring or connector and
repair or replace the wrong one
Mismatch of the setting data of
Communication speed and Data bit
configuration with those of the host
computer
Confirm the settings and set them
correctly
Wrong address setting
Error in the data format
Reexamine the communication program
Transmission line is not set to the receive
state after data send
EOT return The specified identifier is invalid
Confirm the identifier is correct or that
with the correct function is specified.
Otherwise correct it
Error in the data format
Reexamine the communication program
NAK return Error occurs on the line (parity bit error,
framing error, etc.)
Confirm the cause of error, and solve the
problem appropriately. (Confirm the
transmitting data, and resend data)
BCC error
The data exceeds the setting range
Confirm the setting range and transmit
correct data
The block data length of the transmission
exceeds 136 bytes
Divide the block using ETB before
sending it
The specified identifier is invalid
Confirm the identifier is correct or that
with the correct function is specified.
Otherwise correct it
