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Appendix 7 Compatibility with Redundant CPU
This section explains the compatibility of MX Component with the Redundant CPU
(Q12PRHCPU, Q25PRHCPU).
(1) Target system
In Target system, select either "Control system" or "Not specified" to access the
compatible Redundant CPU.
Control system: Connects to the control system and continues access to the
control system in response to system switching.
Not specified: Connects to the connection target programmable controller
CPU as before.
*1: Target system setting can either be made on the utility setting type
communication setting wizard screen or by the program setting type control
property.
POINT
To judge which system in the Redundant CPU system is being accessed by MX Component,
monitor the following special relays.
(1) When checking which system is being accessed, System A or System B
• Identifies system A/system B of a redundant system.
• Remains ON/OFF even if the tracking cable is disconnected while the redundant system
is running.
SM1511
System A
identification
flag
System A System B
At the time of TRK.CABLE ERR.(Error code:
6120) occurrence (System not determined.)
SM1511 ON OFF OFF
SM1512 OFF ON OFF
SM1512
System B
identification
flag
(2) When checking the operation system status
• Indicates the CPU module operation status
• Remains ON/OFF even if the tracking cable is disconnected while the redundant system
is running.
SM1515
Control
system
Standby
system
At the time of TRK.CABLE ERR.(Error code:
6120) occurrence (System not determined.)
SM1515 ON OFF OFF
SM1516 OFF ON OFF
SM1516
Control/
Standby
system
status