MKS Device Dependent Messages
Chapter Seven: IEEE-488 Communications Option
122
Trip Point Messages (Continued)
Function
Message
Trip Point Channel
Command
Shortcut command
Query:
Shortcut query:
:control:relay A or B:trip (@ tp chan)
:cont:rela A or B:trip (@ tp chan)
:control:relay A or B:trip?
:cont:rela A or B:trip?
where tp chan equals:
1 for Channel 1
2 for Channel 2
3 for Channel 3
Latch Mode
Command
Shortcut command
Query:
Shortcut query:
:control:relay A or B:latch state
:cont:rela A or B:latch state
:control:relay A or B:latch?
:cont:rela A or B:latch?
where state equals:
enab for enabled
disa for disabled
Table 34: IEEE-488 Trip Point Messages
Example 1: How To Configure the Trip Point A Value
To set the TP A high value to 900, issue the following command:
:control:relay a:high 900
ENTER
Example 2: How To Set the Trip Point Hysteresis
The trip point hysteresis value is defined as a ± percent of the trip point value and can range from
0 to 10%. Refer to How To Adjust the Hysteresis, page 78, for more information.
To change the hysteresis value to 2% for TP B, enter:
:control:relay b:hyst 2
ENTER
Note
The 670 instrument will accept fractional entries with or without the
leading zero. For example, you may enter either “0.1” or “.1” to set the
hysteresis value.
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