When One System Is Started Automatically Even Though A Tracking Communication Error Has Occurred - Mitsubishi Electric MELSEC iQ-R-R00CPU User Manual

When one system is started automatically even though a tracking
communication error has occurred
When the other system is powered off or a tracking cable has an error at a system start, the CPU module waits for the start-up
of the other system. The following shows a program example to start up only one of the systems using external signals
without waiting for the start-up of the other system.
In the following example, the program prevents both systems from operating as control systems.
This program example is not supported with the redundant line structure of CC-Link IE Field Network.
System configuration
The following figure shows a configuration example of the system.
(1) (2) (3)
(1) Power supply module (R61P)
(2) CPU module (RnPSFCPU)
(3) SIL2 function module (R6PSFM)
(4) Redundant function module (R6RFM)
(5) Input module (RX40C7)
(6) Output module (RY40NT5P)
(7) Tracking cable
(8) CC-Link IE Field Network master/local module (RJ71GF11-T2)
*1 Starting up one system is allowed without the CC-Link IE Field Network master/local module.
Wiring example
The following figure shows a wiring example.
RnPSFCPU
R61P R6PSFM R6RFM
24V
TD
• TD is an on delay timer wired externally. Input the contact output of the on delay timer to X30.
• The 24V power supply is always input.
35 BASIC CONCEPT
572
35.8 Determination of Control System/Standby System
(4) (5) (6) (7)
RX40C7 RY40NT5P
(Input) (Output)
X30
Y40
X31 Y41
X32 Y42
V(+)
COM(+) COM(-)
(8)
*1
RnPSFCPU
R61P R6PSFM
RJ71GF11-T2
24V
(1) (2) (3) (4) (5) (6)
RX40C7
R6RFM (Input)
X30
X31
X32
COM(+)
TD
(7)
RY40NT5P
(Output)
RJ71GF11-T2
Y40
Y41
Y42
V(+)
COM(-)