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9 TROUBLESHOOTING
9.2 Error Codes
9.2.1 Communication error codes
Error
Detected
code
in:
(Hex.)
The node No. (MAC ID) value is out of
36
QJ71DN91
range.
H
The mode switch value is out of range.
The node No. (MAC ID) is duplicated on
39
QJ71DN91
H
the network.
E0
QJ71DN91
Power is not supplied to the network.
H
Other modules cannot be identified on
E1
QJ71DN91
H
the network.
The node No. switches or mode switch
F0
QJ71DN91
H
has been changed during operation.
9 - 8
This section describes error codes and respective corrective actions.
A communication error code is stored in the high byte of Error Information for Master
Function (address: 01B1
Read it when Error Set Signal for Master Function (X03) or Error Set Signal for Slave
Function (X08) is set to ON, and check the error details.
Communication error codes can be checked in System monitor of GX Developer.
(Refer to Section 9.3.)
(1)
When the error-detected node No. (low byte of error information) is FF
Description
) or Error Information for Slave Function (address: 0601
H
Action
• Set the node No. within the range of 0 to
63.
• Set the mode switch to any other than D
to F.
• Set a unique node No.
• Supply power to the network (DC24V).
• Connect other modules to the network.
• Restore the setting of the node No.
switches or mode switch.
MELSEC-Q
).
H
H
Detectability
Master
Slave
function
function
9 - 8
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Troubleshooting
