AOIP CALYS 1500, Instruction Manual, Page: 124 / 184

GENERAL
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CALYS 1500
To configure the CALYS 1500 in this mode, "HART" function must be selected from "Menu":
A configuration menu displays:
First, select whether the CALYS 1500 supplies the HART loop (ON) or whether power supply is provided by another
device (OFF).
To control a HART network, there must be at least one master and only one known as "Primary", and the others are
known as "Secondary". Select whether the unit is a "Primary" or "Secondary" master.
The "Number of preamble characters" parameter is specific to the HART protocol, it may be set to a value from 03 to 15.
By default it is set to 05.
The "Number of repeats" parameter is also specific to this protocol, it may be set to a value from 00 to 05. By default it is
set to 02.