Mitsubishi Electric MELSEC iQ-R-R00CPU User Manual page 716

Error Error name
code
1A60H Timeout in
to safety
1A66H communications
APPX
714
Appendix 1 Error Codes
Error details and cause
• A timeout error occurred during
safety communications.
Stop/ Action
continue
Continue ■SIL2 Process CPU
• Check and correct the safety refresh
monitoring time and the transmission
interval monitoring time setting values.
• The possible cause is malfunction due
to noise or cable failure. Check that
there is no error in a transmission path
by executing CC-Link IE Field
diagnostics. Check the distance of
wires and cables and the grounding
status of each device as well.
• Check the detailed information (safety
station system configuration
information) of the error by executing
module diagnostics using the
engineering tool and check "Station
No.", "Slot No. (another station)", and
"Base No. (another station)". If the
destination station is an intelligent
device station, execute the system
monitor for the remote head module in
the station and check the error details.
• Check that no online operation is being
performed from a peripheral such as
the engineering tool, or no program or
parameter is being written to the safety
communication destination station.
• The possible cause is a hardware
failure of the module performing safety
communications. Please consult your
local Mitsubishi representative.
■Safety CPU
• Check and correct the safety refresh
monitoring time and the transmission
interval monitoring time setting values.
• The possible cause is malfunction due
to noise or cable failure. Check that
there is no error in a transmission path
by executing CC-Link IE Field
diagnostics. Check the distance of
wires and cables and the grounding
status of each device as well.
• Check the detailed information (system
configuration information) of the error
by executing module diagnostics using
the engineering tool and check the
displayed station number. If the
destination station is a remote device
station or remote I/O station, read error
history data of the destination station
by executing a command from the CC
IE Field Configuration window and
check the details of the error. If the
destination station is a master/local
station, execute the system monitor for
the station and check the details of the
error.
• Check that no online operation is being
performed from a peripheral such as
the engineering tool, or no program or
parameter is being written to the safety
communication destination station.
• The possible cause is a hardware
failure of the module performing safety
communications. Please consult your
local Mitsubishi representative.
Detailed Diagnostic
information timing
System At interrupt
configuration occurrence
information,
safety station
system
configuration
information