Chapter Seven: IEEE-488 Communications Option
MKS Device Dependent Messages
121
Trip Point Messages
The Trip Point messages define the trip point values, both high and low, the initial state of the
trip point relays, and the hysteresis values. Refer to The [TRIP POINTS] Key, page 54, for a
complete description of the trip points.
Trip Point Messages
Function
Message
Trip Point High Value
Command
Shortcut command
Query:
Shortcut query:
:control:relay A or B:high TP value
:cont:rela A or B:high TP value
where TP value a number between ±105% of full scale
:control:relay A or B:high?
:cont:rela A or B:high?
Trip Point Low Value
Command
Shortcut command
Query:
Shortcut query:
:control:relay A or B:low TP value
:cont:rela A or B:low TP value
where TP value a number between ±105% of full scale
:control:relay A or B:low?
:cont:rela A or B:low?
Hysteresis Value
Command
Shortcut command
Query:
Shortcut query:
:control:relay A or B:hyst value
:cont:rela A or B:hyst value
where value is a ± percent of the trip point, from 0 to
10% (applied to the trip point value)
:control:relay A or B:hyst?
:cont:rela A or B:hyst?
Trip Point Normal State
Command
Shortcut command
Query:
Shortcut query:
:control:relay A or B:norm state
:cont:rela A or B:norm state
where state equals:
ener for energized
dent for de-energized
:control:relay A or B:norm?
:cont:rela A or B:norm?
Table 34: IEEE-488 Trip Point Messages
(Continued on next page)
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