A.3 Data Exchange Functions, Continued

Four Points Per Transmitter

To accommodate all the PVs that can be associated with a given

SMV 3000 transmitter, you must build an AI point for each PV up to a maximum of four points (PVs) per transmitter. Each point built must have the same name assigned for the STITAG parameter and be assigned to contiguous slots. The IOP will calculate the number of PVs based on the number of identical contiguous STITAG parameters and allocate the appropriate number of logical slots in addition to the master slot.

The master slot represents the slot to which the transmitter is physically connected and is identified as PV number 1. It is the lowest numbered slot in a group of contiguous slots with identical STITAG names. The PV numbers are assigned consecutively for the associated logical slots as 2, 3, and 4. As shown in Figure A-4, a transmitter configured for 4 PVs and connected to the terminals for slot 5 on the IOP will have PV numbers 1, 2, 3, and 4 assigned for PVs associated with physical (master) and logical slots 5, 6, 7, and 8, respectively.

Since the master slot as well as all associated logical slots are built as separate AI points, each slot/PV has its own configuration parameters and functions like a separate transmitter database. This means you can modify individual parameters for a given PV independent of other PVs. However, changes in common parameters like STITAG will also affect the other PVs.

Figure A-4 AI Point for Each Transmitter Input

Universal

HM

Station

 

NIM

PM/APM/HPM

STIMV

PMM IOP

AI point for each transmitter input (PV) with up to 4 points per transmitter.

Master Slot: 5

Logical Slots: 6, 7, 8

Number of PVs: 4

PV number: 1, 2, 3, 4

FTA

SMV 3000 Transmitter

with 4 PVs connected to terminals for slot 5

Continued on next page

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Image 166
Honeywell SMV 3000 user manual Figure A-4 AI Point for Each Transmitter Input, Four Points Per Transmitter