Lakeshore 340 - Page 134

Lake Shore Model 340 Temperature Controller User’s Manual
9-36 Remote Operation
LOGSET Configure data logging parameters
Input: LOGSET <log type>,<interval>,<overwrite>,<start mode>
Returned: Nothing
Remarks: Configures data logging parameters.
<log type> Specifies readings/seconds. Valid entries: 1 = readings, 2 = seconds.
<interval> Specifies number of readings between each record when <log type> = 1.
Specifies number of seconds between each record when <log type> = 2.
Valid entries: 1 – 3600.
<overwrite> Specifies whether overwrite enable. Valid entries: 0 = No, 1 = Yes.
<start mode> Specifies start mode. Valid entries: 0 = clear, 1 = continue.
LOGSET? Query data logging parameters
Input: LOGSET?
Returned: <log type>,<interval>, <overwrite>,<start mode>.
Format: n,n,n,n[term]
Remarks: Returns the data logging parameters. If there is no valid SRAM Data card mounted,
the Model 340 returns 0,0,0,0. See LOGSET command for parameter descriptions.
LOGVIEW? Query record of logged data
Input: LOGVIEW? <record>,<point>
Returned: <timestamp>,<point data>. The format of <point data> varies depending on the point type
specified by point. See DATETIME? command for the <timestamp> parameters format.
(1) point type = Input <reading>,<status>
<reading> Input reading in [K], [C], or sensor units.
<status> Shows status of the input in decimal. Possible maximum value is
255. Each bit has its own meaning if set to 1.
Bit 7: .DISABLED.
Bit 6: .NOCURVE.
Bit 5: .S-OVER.
Bit 4: .S-ZERO.
Bit 3: .T-OVER.
Bit 2: .T-UNDER.
Bit 1: Old reading.
Bit 0: Invalid reading.
(2) point type = SP1/2 <value>
<value> SP1/2 value in [K], [C], or sensor units.
(3) point type = Out2 <value>
<value> Out2 value in [%]
(4) point type = Out1 <value>,<pow/cur>,<heater range>
<value> Out1 value in [%]
<pow/cur> 1 = current, 2 = power
<heater range> Heater range in [W]. 0.0 when heater is OFF
(5) point type = None 0.0
If there is no valid SRAM Data card mounted or data logging is in progress, the Model 340
returns 0,0,0,0,0,0,0,0.
Remarks: Returns the record of the specified point of the specified record number.
<record> Specifies logged data record number. Valid entries: 1 – value returned by
LOGCNT?
<point> Specifies point number to be returned. Valid entries: 1 – 4.