Mitsubishi QJ71MB91 - Page 327

11
TROUBLESHOOTING
11.4 Error Codes
11.4.1 Error code storage area
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9
PROGRAMMING
10
DEDICATED INSTRUCTIONS
11
TROUBLESHOOTINGAPPENDICESINDEX
(1) Automatic communication parameter error code storage area
When an error occurs with the Automatic communication parameter setting request/
Automatic communication start request (Y4/YC) ON, the corresponding error code is
stored in this area.
(a) Storage timing
The error code is stored when the Automatic communication parameter setting,
error completed (X5/XD) turns ON.
(b) Clear timing
The error code is cleared when the Automatic communication parameter setting,
normally completed (X4/XC) signal turns ON.
(2) Automatic communication parameter setting result storage area
When an automatic communication parameter error occurs with the Automatic
communication parameter setting request/Automatic communication start request
(Y4/YC) ON, the automatic communication parameter number corresponding to the
error is stored in this area.
(a) Storage timing
The automatic communication parameter number is stored when the Automatic
communication parameter setting, error completed (X5/XD) turns ON.
(b) Clear timing
The automatic communication parameter number is cleared when the Automatic
communication parameter setting, normally completed (X4/XC) turns ON.
(3) MODBUS device assignment parameter error code storage area
When an occurs with the MODBUS device assignment parameter setting request
(Y8) ON, the corresponding error code is stored in this area.
(a) Storage timing
The error code is stored when the MODBUS device assignment parameter
setting, error completed (X9) turns ON.
(b) Clear timing
The error code is cleared when the MODBUS device assignment parameter
setting, normally completed (X8) turns ON.
(4) MODBUS device assignment parameter setting result storage area
When a MODBUS device assignment parameter error occurs with the MODBUS
device assignment parameter setting request (Y8) ON, the device type and assigned
group No. of the error device are stored in this area.
(a) Storage timing
The device type and assigned group No. are stored when the MODBUS device
assignment parameter setting, error completed (X9) turns ON.
(b) Clear timing
The device type and assigned group No. are cleared when the MODBUS device
assignment parameter setting, normally completed (X8) turns ON.
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