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No mapping is required, the message configuration directly specifies the source/destination data-table addresses. Personally, I think that it is easier to let the ControlLogix handle data-transfers to/from legacy PLCs and SLCs. Therefore, if the message tries to read N120:6, length 3, the mapping supplies the data from CLX_Data, length 3 Then whenever the ControlLogix sees a message for read or write access to N120, it substitutes CLX_Data to access the data. The ControlLogix will have to have added to the "Map PLC5/SLC Messages" the following association - File Number = 120 ControlLogix Tag = CLX_Data. The PLC5 message will have to be set-up to read a valid PLC5 data-table address, e.g. (Find Map PLC5/SLC Messages" under the "Logic" menu).įor simplicity, I will describe reading a ControlLogix INT array called CLX_Data, which will be 20 INTs in length. And that is where the "Map PLC5/SLC Messages" comes into play in the ControlLogix project. This mechanism allows the PLC5 or SLC to "believe" it is reading a data-table address from another PLC5 or SLC. Instead, they have provided a mechanism in the ControlLogix that provides compatability with the older systems like PLC5 and SLC PLCs. data from a Citect SCADA Trend server, and alarm tag data from a Citect. In this way the data is available to Citect via the same method of addressing as a PLC5.
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In RSLogix 5000 this is done via the menu 'Logic \ Map PLC/SLC Messages'. This is where tags or array tags in the ControlLogix are mapped to PLC5 style file numbers.
Citect controllogix plc5 map tags pdf#
There is no way a PLC5 will "read" a ControlLogix tag, it just doesn't understand the much newer ControlLogix tag database concepts, and RA will never put that functionality into the PLC5. Vijeo Citect Training Manual 7.2 - Free ebook download as PDF File (.pdf) or. To do this requires the use of PLC5 mapped tags. I'm using the MSG instruction but PLC-5 won't read a 'tag' from Compactlogix, right? Thanks!
Unable to write to tagHow can I read from Compactlogix to PLC-5 through ethernet (same network). Allen-Bradley ControlLogix Ethernet Driver Help unknown.