Applies To:
  • CitectSCADA 3.xx, 4.xx, 5.10
Summary:
Some devices which are supposed to emulate a Allen Bradley PLCs using KE protocols such as KE500 are not recognised as being on-line by Citect. 

Solution:
Citect does not recognise these non-standard devices as being on-line because they don't support the status register which is used by Citect for its on-line check. In order to facilitate the use of these devices with Citect, an extra "ini" option has been added which allows the specification of an alternate register for the on-line check.

To make use of the option, insert the following lines in your Citect.INI file:

[KE]
AltInitReg=B3:0

Note that you can use any register type (not just B). However, it is advisable to use 16 bit registers. The other numbers (3:0) are the file and segment numbers. These should be familiar to anyone used to AB addressing. Again, any numbers can be used here (as long as they are defined in the target device).

 
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