-35-
An application program is written, which sends and
retrieves data from the IMPs.
Note: On all IM indicators, the SO+ and the +20 mA SRC
are connected internally. Therefore it is not necessary
to have this terminal tied to any other terminal on the
unit if that unit is serving as the loop supply source.
PROCESS CONTROLLING SYSTEM
Six Model IMPs with Serial Communication Option are
used to monitor and control water tank levels in a plant. The
IMPs are located at each of the tanks in the production area of
the building. The communications lines are run to an industrial
computer located in the production offices.
The drawing below shows the Current Loop set-up. Each
IMP is given an address and programmed accordingly
(Program Module #7). A baud rate of 1200 is selected.
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