156
*1
To clear the error, modify the set value within the range and perform one of the following two operations:
• Turning on and off Error clear request flag (RYA).
• Turning on and off Initial data setting request flag (RY9).
*2
Mode switch setting change (error code: 0920H) is not cleared even if five seconds has passed since the error occurred.
During the error, the operation continues in the mode previous to the change of Mode switch (address: 0000H).
To clear the error staying in the previous mode, set Mode switch (address: 0000H) back to the original value and then
turn on and off Initial data setting request flag (RY9).
*3
Turning on and off Error clear request flag (RYA) or Initial data setting request flag (RY9) does not clear this error. The
error is cleared only by the method described in the action column.
In the event of multiple errors, only the latest error code is stored in Latest error code (RWr0) or Latest warning code (RWr1).
The errors that have occurred in the past can be checked in the error history of the engineering tool.
For the error history, refer to the following:
• Checking by executing a command of the slave station (
• Error history data
(
1F20H
Moderate error
External power
supply OFF error
The external power supply monitoring function
is enabled; however, the external power supply
of the extension output module is in an off
state.
• Check the state of the external power supply of
the extension output module.
• If an error occurs at the system startup or the
system stop, correct the timing to enable the
external power supply monitoring function.
1F30H
Moderate error
Extension module
parameter error
The parameter of the model name that is
different from the model name of the
connected extension module has been
reflected.
Set the same type and number of points in
Extension module identification code (address:
0200H) as those of the connected extension
module.
1F40H
Moderate error
Input response
time setting error
In the low 3 bits of Input response time setting
(address: 0010H), 000b or 001b has been set.
Set a value other than 000b and 001b to the low 3
bits of Input response time setting (address:
0010H).
D529H
Major error
Communication
error 1
An error has occurred in the communication.
• The malfunction due to noise or other factors is
a possible cause. Check the distance of the
wire and cables and the grounding condition of
the individual devices, and then take measures
against noise.
• Execute a unit test for the module. If the same
error occurs again, the hardware failure of the
module is a possible cause. Please consult your
local Mitsubishi representative.
D52BH
Major error
Communication
error 2
Error code
(hexadecimal)
Classification
Error name
Description and cause
Action
