List Of Error Codes - Mitsubishi Electric MELSEC iQ-R AnyWireASLINK User Manual

4.4

List of Error Codes

This section describes errors that occur in processing for data communication between the RJ51AW12AL and slave modules
and in processing requests from the CPU module, and error codes, error definitions, and causes of the errors, and actions
against the errors.
Error code Error details and causes
0CC8H Transmission cable voltage drop error
0CC9H DP/DN short error
0CCAH DP/DN disconnection error
0CCBH 24V/DP short error
4 TROUBLESHOOTING
80
4.4 List of Error Codes
Action
The voltage of the 24VDC external power supply may be
insufficient. Perform the following:
• Adjust the power supply voltage of the 24VDC external power
supply within the rated value (21.6 to 27.6VDC). (The
recommended voltage is 26.4VDC.)
• Check that the power cables (24V, 0V) are not disconnected
or short-circuited. When crimping the link connector, check
that the pin layout is correct.
• Check that the 24VDC external power supply is properly
connected to the terminal blocks of the RJ51AW12AL and the
slave module.
• Check that there is no short circuit or incorrect wiring and
screws are tightened sufficiently.
A short-circuit may be occurring in the transmission cables (DP,
DN) or the maximum supply current of the transmission cables
(DP, DN) may be exceeded. Perform the following:
• Check that the transmission cables (DP, DN) are not short-
circuited. When crimping the link connector, check that the pin
layout is correct.
• Check that the transmission cables (DP, DN) are not in
contact with each other and that there is no incorrect wiring in
the terminal block wiring of the RJ51AW12AL and the slave
module.
• Correct the cables (wire diameter, total wiring length) and
modules (type, the number of connected modules) so that the
current consumption of all the slave modules does not exceed
the transmission cable supply current of the RJ51AW12AL.
The transmission cables (DP, DN) may be disconnected, or
there may be no response from the slave module.
The slave module may be in failure or the system configuration
may have been changed after the automatic address detection.
Check 'Number of the error IDs' (Un\G8192) and 'Error ID
information storage area' (Un\G8193 to Un\G8320), find out the
disconnected area, and perform the following:
• Check that the transmission cables are free from
disconnection. Check that the cables are crimped with proper
pin layout using link connectors appropriate to the wire
diameter.
• Check that the transmission cables (DP, DN) are properly
connected to the terminal block of the RJ51AW12AL. Check
that there is no incorrect wiring and that screws are tightened
sufficiently.
• When creating a new system, adding or removing a slave
module, or changing the address of the slave module,
execute the automatic address detection. After executing the
automatic address detection function, check that the number
of slave modules and the address are consistent with those of
the actual system.
• If the LINK LED of the slave module does not flash, check that
there is no disconnection, short circuit, incorrect wiring, or
poor contact in the transmission cables (DP, DN) around the
module.
A short-circuit may be occurring in the transmission cables (24V,
DP). Perform the following:
• Check that the transmission cables (24V, DP) are not short-
circuited. When crimping the link connector, check that the pin
layout is correct.
• Check that the transmission cables (24V, DP) are not in
contact with each other and that there is no incorrect wiring in
the terminal block wiring of the RJ51AW12AL and the slave
module.
Detailed information



