Mitsubishi CR800 Series Instruction Manual page 76

1Error list
Error No.
H8740 Error message CR800 init communication error
Cause
Measures
H8741 Error message CPU unit init communication error
Cause
Measures
H8751 Error message CR800 communication error
Cause
Measures
H8752 Error message CPU unit communication error
Cause
Measures
H8760 Error message PLC CPU parameters are not set
Cause
Measures
H8761 Error message CPU number setting is illegal
Cause
Measures
H8762 * Error message Multi CPU parameter setting is illegal
Cause
Measures
H877n Error message CR800 communication error
(n: Refer to
Cause
"Cause")
Measures
H878n Error message CPU unit communication error
(n: Refer to
Cause
"Cause")
Measures
H8790 Error message CR800 error reset error
Cause
Measures
1-67
Error no. H8740
Initial communication with the CR800 was not possible
Check the communication cable connection
Initial communication with the CPU unit was not possible
Check the communication cable connection
Communication from the CR800 was cut off
Check the communication cable connection
Communication from the CPU unit was cut off
Check the communication cable connection
Fixed Scan Communication Area is not set in the PLC CPU
Please set the Fixed Scan Communication Area in the PLC CPU
The setting of CPU number is different
Please check PLC's multi CPU setting and QMLTCPUN parameter
The multi CPU parameter setting is incorrect.
Synchronization processing in the robot CPU was not properly performed due to the incorrect multi CPU
parameter setting. Please check and correct the value of the multi CPU parameter setting, and then turn
the power OFF and ON once.
Communication error was detected from CR800
When n is any of 1 to 8: Axis number
When n is 9: Force sensor
When n is 0: Other than the above
Check the communication cable connection
Communication error was detected from the CPU unit
When n is any of 1 to 8: Axis number
When n is 9: Force sensor
When n is 0: Other than the above
Check the communication cable connection
Can not reset CR800 error
Check the communication cable connection
Error cause and measures