PI Interface for Bailey Infi90 29To
read only the output value, set Location to 24. Define the PI point as type Digital or Int. The block output (bit 0 of status byte 1) is saved by the interface. The value is set to BAD INPUT if the quality is bad. When
communicating with the CIU, the interface sets this point type to Bailey point type 15. For the alarm state
or the RCM set permissive bit, set Location to 25 or 26, respectively. These point types are also converted to point type 15 when the interface communicates with the CIU. These pseudo-point types are used so that it is possible to have more than one PI tag fora single CIU index. The alarm state and set permissive bit points can be either PI Digital or Int. The interface supports user-defined bitmap processing on RCM and device driver blocks.
For the user bitmap points, the value of Location is 27XXXXX where XXXXX is the bitmap ranging from 1 to 32767. The interface masks the Net90/Infi90 status word with the user bitmap and puts the result into the PI point. See section User Defined Bit Mask for the meaning of the Bailey status word and example of the bit mask. Note that the maximum value of the mask is 32767, which excludes the quality
bit of the N status word, because
with the quality bit set, the PI value is automatically set to BAD INPUT. Only one user bitmap PI point can be configured per RCM/DD block.
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