Lake Shore Model 340 Temperature Controller User’s Manual
9-42
Remote Operation
SRDG?
Query Sensor Units Reading for an Input
Input: SRDG?
<input>
Returned: <sensor units value>
. Format:
±
nnn.nnnE
±
n[term]
Remarks:
Returns the sensor units reading for an input.
<input>
Specifies which input to query.
TUNEST?
Query Control Loop 1 Tuning Status
Input: TUNEST?
Returned: <tuning status>
. Format:
n[term]
Remarks:
Returns
0
if the loop is not tuning, and
1
if it is tuning.
XSCAN
Configure External Scanner Mode Parameters
Input:
XSCAN [<mode>], [<channel>], [<interval>]
Returned:
Nothing
Remarks:
Configures the external scanner mode (refer to Paragraph 5.4).
<mode>
Specifies scan mode. Valid entries:
0
= off,
1
= manual,
2
= autoscan,
3
= slave.
<channel>
Specifies scanned input to use if
<mode>
= manual. Valid entries:
1
-
16
.
<interval>
Specifies autoscan interval in seconds if
<mode>
= autoscan. Valid entries:
0
-
999
.
Example: XSCAN 2,,5[term] -
Sets the instrument to autoscan the inputs with an interval of 5 seconds.
XSCAN?
Query External Scanner Mode Parameters
Input: XSCAN?
Returned: <mode>, <channel>, <interval>
. Format:
n,nn,nnn[term]
Remarks:
Returns the external scanner mode configuration. See the
XSCAN
command for parameter
descriptions.
ZONE
Configure Control Loop Zone Table Parameters
Input:
ZONE <loop>, <zone>, [<top value>], [<P value>], [<I value>], [<D value>], [<mout
value>], [<range>]
Returned:
Nothing
Remarks:
Configures the control loop limit band parameters used in conjunction with the Status Byte
Register (refer to Paragraph 9.1.3).
<loop>
Specifies which loop to configure.
<zone>
Specifies which zone in the table to configure. Valid entries are:
1
-
10
.
<top value>
Specifies the top temperature of this zone.
<P value>
Specifies the P for this zone.
<I value>
Specifies the I for this zone.
<D value>
Specifies the D for this zone.
<mout value>
Specifies the manual output for this zone.
<range>
Specifies the heater range for this zone if
<loop>
=
1
. Valid entries:
0
-
5
.
Example: ZONE 1, 1, 25.0, 10, 20, 0, , 2[term] -
Control Loop 1 zone 1 is valid to 25.0 K with a P of 10,
an I of 20, no D, and a heater range of 2.
ZONE?
Query Control Loop Zone Table Parameters
Input: ZONE?
<loop>,
<zone>
Returned: <top value>, <P value>, <I value>, <D value>, <mout value>, <range>
Format:
nnn.nnn,nnnn.n,nnnn.n,nnnn,
±
nnn.nn,n[term]
Remarks:
Returns control loop zone table parameters. See the
ZONE
command for parameter
descriptions.
<loop>
Specifies which loop to query.
<zone>
Specifies which zone in the table to query. Valid entries:
1
-
10
.