Alarm; Alarm? Input Alarm Parameter Query; Alarmst? Input Alarm Status Query; Almrst - Lakeshore 335 User Manual

110 c 6: Computer Interface Operation
HAPTER

ALARM

Input
Format
Remarks
Example
ALARM?
Input
Format
Returned
Format
ALARMST?
Input
Format
Returned
Format

ALMRST

Input
Remarks
Model 335 Temperature Controller
Input Alarm Parameter Command
ALARM <input>,<off/on>,<high value>,<low value>,
<deadband>,<latch enable>,
<audible>,<visible> [term]
a,n, ±nnnnnn, ±nnnnnn, +nnnnnn,n,n,n
<input> Specifies which input to configure: A or B.
<off/on> Determines whether the instrument checks the alarm for this input,
where 0 = off and 1 = on.
<high setpoint> Sets the value the source is checked against to activate the
high alarm.
<low setpoint> Sets the value the source is checked against to activate low alarm.
<deadband> Sets the value that the source must change outside of an alarm
condition to deactivate an unlatched alarm.
<latch enable> Specifies a latched alarm (remains active after alarm
condition correction)
where 0 = off (no latch) and 1 = on.
<audible> Specifies if the internal speaker will beep when an alarm condition
occurs. Valid entries: 0 = off, 1 = on.
<visible> Specifies if the Alarm LED on the instrument front panel will blink
when an alarm condition occurs.
Valid entries: 0 = off, 1 = on
Configures the alarm parameters for an input.
ALARM A,0[term] turns off alarm checking for Input A.
ALARM B,1,270.0,0,0,1,1,1[term] turns on alarm checking for input B, activates
high alarm if kelvin reading is over 270, and latches the alarm when kelvin reading
falls below 270. Alarm condition will cause instrument to beep and the front panel
Alarm LED to blink.
Input Alarm Parameter Query
ALARM? <input>[term]
a
<input> A or B
<off/on>,<high value>,<low value>,<deadband>,<latch enable>,<audible>,<visible>
[term]
n,±nnnnnn,±nnnnnn,+nnnnnn,n,n,n (refer to command for description)
Input Alarm Status Query
ALARMST? <input>[term]
a
<input> A - B
<high state>,<low state>[term]
n,n
<high state> 0 = Off, 1 = On
<low state> 0 = Off, 1 = On
Reset Alarm Status Command
ALMRST[term]
Clears both the high and low status of all alarms, including latching alarms.