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Ethernet system configuration of a redundant system
What will the system configuration be when a host OPS is connected to a redundant system via Ethernet?
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Answer
The following figure shows the basic configuration.
When a control system Ethernet module is faulty or disconnected, the system is switched at a disconnection and the module is connected to a standby system.
In this configuration, when a LAN card of a personal computer, hub, or a LAN cable between them is disconnected, the communication between the computer and a programmable controller will be disabled.
To prevent this problem, insert two LAN cards into the personal computer and configure two Ethernet systems as shown in the figure below.
When a control system Ethernet module is faulty or disconnected, the system is switched at a disconnection and the module is connected to a standby system.
In this configuration, when a LAN card of a personal computer, hub, or a LAN cable between them is disconnected, the communication between the computer and a programmable controller will be disabled.
To prevent this problem, insert two LAN cards into the personal computer and configure two Ethernet systems as shown in the figure below.
- Product Name
- MELSEC-Q Series
- Series
- CPU
