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In this section, you will register a tag-based model and transfer a value from PLC A to PLC B. Each PLC A is connected by either serial or Ethernet, and both of them are communicating with serial, while PLC B is connected by Ethernet. Both will be connected to the Xpanel.
a) Enter the device names as ‘PLC A’ and ‘PLC B’ in the [Tools] – [I/O Device] menu. Register PLC A as a serial device, and PLC B as an Ethernet device. Add a station and configure the remaining I/O device settings for each.
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b) Create tags which are indicating points in a real tag for each PLC. Enter the I/O addresses as ‘D100’ in ‘PLC A’ and ‘D200’ in ‘PLC B’.
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c) Go to [Tools] – [Data Bridge] and add a data bridge model. Select 'Tag Base' for the model type as ‘Tag Base’ and ‘Sync.’ as ‘Always’and ‘Always’ for the Sync. Properties option. When the value of in PLC A changes, the value of in PLC B will be matched with it immediately.
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d) Add a tag tags to the model to synchronize the valuevalues. Enter the each tag name as ‘PLCA.D100’ in for the original tag and ‘PLCB.D200’ in for the target tag.
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e) Launch the project in the Xpanel. You may see PLC A value is transferred to the PLC B via data bridgeWhenever D100 in PLC A updates, D200 in PLC B should update automatically. Notice that the inverse is not true: updating D200 in PLC B does not change the value of D100 in PLC A. To make this happen, you must add another tag pair with D200 as the source and D100 as the destination.
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