Hart - Presys PCA-570-RM Technical Manual

Channel 2 must be enabled and PRESSURE selected. The corresponding capsule must be selected. On
channel 1, select SWITCH input, enable the PRESSURE option.
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The PCA-570 then displays the pressure measurement and the state of the contact (open or closed).
Press the RUN button to start the test after filling in all the required fields.
Vary the pressure manually or with the help of an automatic controller. The instant the relay changes position,
the pressure switch alarm setpoint is shown on the display, both the change from open to closed, and from closed to
open.
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2.5. HART

The PCA-570 can be used to read and set parameters from instruments that have a HART
protocol. The HART
calibrator) and the slave (field instrument) superimposed on the 4 to 20 mA analog signal. To access this function,
from the main menu, select the HART
The HART
versions: NH (no HART
The CH option has basic and universal commands for HART
which allow the adjustment of the range of the instrument, monitoring of the primary variable, adjustment of current,
etc. The FH option, in addition to the basic and universal commands, is supplied with the DD (Device Description)
library from FieldComm Group and allows the configuration of parameters specific to each instrument.
The following description is valid for both the CH and FH options.
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protocol allows a digital communication between the master (in this case, the PCA-570
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option.
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communication of the PCA-570 calibrator is an optional module. The calibrator has three
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communication), CH (HART
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calibrator) and FH (Full-HART
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communication (zero, span, trim mA, ...),
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communication
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configurator, with DD library).