The AllenBradley Ethernet Device Communications Interface can process unsolicited data messages in PLC2 style format. Unsolicited data can be generated by PLCs, which are directly connected to the Ethernet, such as PLC5 E series and 5/250 systems. PLCs that are connected to Data Highway or Data Highway Plus networks can indirectly send messages through a bridge such as a 5/250 Resource Manager.
You can configure unsolicited data points via the Device Point Configuration transaction by specifying an address in the following format:
point address>application address
Where
point address is the memory location in the PLC as described in the previous section. This address must be specified in Uppercase.
application address is a unique tag that identifies the unsolicited data item. This is an octal value and must be in the range of 0 – 77777.
Example: N7:10>020
The application address is a logical identifier for CIMPLICITY software, and the data will be mapped to the point address.
Rules for defining unsolicited points. |
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Control multiple point updates via a logical definition. |
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Enable PLC2 protected writes. |
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About Allen-Bradley Communications. |