Lake Shore Model 647 Magnet Power Supply User’s Manual
Remote Operation
4-17
4.3.1.5 Current Step Limit Commands Description
The following MPS commands configure the various functions of the current step limit features.
ISTP:
Programs Output Current Step Limit
Input:
ISTP [step limit]
where
[step limit]
= a value between 0 and +999.9900.
Remarks:
Truncates the value to the 0.001 place. The initial condition is +000.000 A. The step limit is
forced to a plus. Control Bus inputs 4 places, display rounds to 0.01 or 0.001 place.
ISTP?:
Output Current Step Limit Query
Input:
ISTP?
Returned:
A number between 0 and +999.9900 A.
Remarks:
Returns nine characters plus up to two terminators. Value is shown as a “+”, but applies to
both positive and negative step changes.
ISTPS:
Programs Output Current Step Limit Status
Input:
ISTPS [status]
where
[status] =
0
to turn OFF output current step limit, or
1
to turn it ON.
Remarks:
The initial condition is
0
.
ISTPS?:
Output Current Step Limit Status Query
Input: ISTPS?
Returned:
0
for OFF, or
1
for ON.
Remarks:
Returns one character plus up to two terminators.
STEP?:
Output Current Step Limit Exceeded Query
Input: STEP?
Returned: 0
if the step limit has not been exceeded, or
1
if it has been exceeded.
Remarks:
Returns one character plus up to two terminators.
STEPR1:
Output Current Step Limit Status Reset
Input: STEPR1
Returned:
Nothing
Remarks:
When the output current step limit has been exceeded, this command must be issued before
normal operation can be resumed.
