*1 Pair number
Redundant CPU pair means the redundant CPUs (System A / System B) in the redundant system configuration. Pair number is the number assigned to each redundant CPU pair.
Example: Ethernet connection (Pair No. 1 and Pair No. 2)
GOT
Redundant CPU pair (No.1) |
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<System A> | Station | <System B> | Station | |||
No.1 | No.2 | |||||
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supply Power module | Q25PRHCPU | supply Power module | Q25PRHCPU | |||
Station
No.5
Ethernet (Network No.1)
Redundant CPU |
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pair (No.2) |
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<System A> |
| <System B> |
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| No.3 |
| No.4 | ||||
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supply Power module | Q25PRHCPU | supply Power module | Q25PRHCPU | ||||
POINT
Precautions for making Q redundant setting
Pay attention to the following items when making the Q redundant setting.
•In the setting, station Nos. of the System A CPU and System B CPU must be adjacent numbers to be set as a pair.
As long as adjacent numbers are used, allocation of them to the System A CPU and System B CPU may be determined as desired.
•Pairing of the last station No. and station No. 1 (Example: Station No. 64 and station No. 1) is not allowed.
•Make sure that the QCPU in the station for which Q redundant setting is made is a redundant CPU.
If any of the QCPUs to which the Q redundant setting is made is not a redundant CPU, the GOT fails to automatically change the monitoring target to the control system when the system is switched.
•When making the Q redundant setting for MELSECNET/H, MELSECNET/10, or Ethernet connections, check the station Nos. of network modules before the setting. If the settings of the Q redundant setting and the actual network module station Nos. are not matched, the GOT fails to automatically change the monitoring target to the control system when the system is switched.
•The redundant pair number setting is necessary in the Q redundant setting when the monitoring target changes automatically at the system switching with the host station specified in Ethernet connection. (The "Target at its own Station
•GOT supports the backup mode (separate mode), which is the operation mode of the QCPU redundant system, and does not support the debug mode.
4 - 30 | 4. HOW TO MONITOR REDUNTANT SYSTEM |
| 4.9 Q Redundant Setting |