MKS 670B - Test B: Electronics Unit Malfunction

Cha
p
ter Seven: IEEE-488 Communications O
p
tion MKS Device De
p
endent Messa
g
es
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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