6
FUNCTIONS
6.6 Remote Operation
6.6.3 Remote RESET
6
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1
Overview
2
Performance
Specification
3
Sequence Program
Configuration and
Execution Conditions
4
I/O Nunber Assignment
5
Memories and Files
Handled by CPU Module
6
Functions
7
Communication with
Intelligent Function
Module
8
Parameters
(4) Precautions
(a) Setting for remote RESET
To perform the remote RESET, check the "Allow" check box of the "Remote reset"
section at the "PLC system" tab screen in the "(PLC) Parameter" dialog box, and
then write parameters into CPU module.
If the "Allow" check box is not checked, a remote RESET operation is not
performed.
(b) Remote RESET in RUN status
Remote RESET cannot be performed when the CPU module is in RUN status.
Perform remote RESET after placing the CPU module in the STOP status by
performing remote STOP or similar operation.
(c) Status after reset processing completion
After the reset processing is complete, the CPU module will enter operation status
set by the RUN/STOP switch (RUN/STOP/RESET switch for the Basic model
QCPU).
• With the RUN/ STOP switch (RUN/STOP/RESET switch for the Basic model
QCPU) in the STOP position, the CPU module enters into the STOP status.
• With the RUN/ STOP switch (RUN/STOP/RESET switch for the Basic model
QCPU) in the RUN position, the CPU module enters into the RUN status.
(d) When error occurs due to noise
Take care that Remote RESET does not reset CPU module if an error occurs in
the CPU module due to noise.
If Remote RESET does not rest, use the RESET/L.CLR switch (RUN/STOP/
RESET switch for the Basic model QCPU) to reset or turn the PLC off.
(e) When redundant system is configured using Redundant CPU
In the backup mode, perform remote RESET for the control system, and then
perform remote reset to reset both systems.
In the separate mode or debug mode, perform remote RESET for only the system
specified the connection target settings.
1) Remote RESET target in backup mode
In the backup mode, perform remote RESET for the control system. (When
remote RESET is performed for the control system, both systems are reset.)
If remote RESET is executed for the standby system, an error (error code:
4240
H
) will occur.
2) When RUN/STOP status differs between control system and standby
system in backup mode
When executing remote RESET with the control system in the STOP status,
also place the standby system in the STOP status.
System switching will occur if remote RESET is performed with the control
system in the STOP status and the standby system in the RUN status.
If remote RESET is performed with the control system in the RUN status and
the standby system in the STOP status, only the standby system is reset.
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