Lakeshore 336, User Manual

Page: 154 / 192

142 c
HAPTER
6: Computer Interface Operation
Model 336 Temperature Controller
RDGST? Input Reading Status Query
Input
RDGST? <input>[term]
Format a
<input>
Specifies which input to query: A–D (D1–D5 for 3062
option).
Returned <status bit weighting>[term]
Format nnn
Remarks The integer returned represents the sum of the bit weighting of the input status flag
bits. A “000” response indicates a valid reading is present..
RELAY Relay Control Parameter Command
Input
RELAY <relay number>,<mode>,<input alarm>,<alarm type>[term]
Format n,n,a,n
<relay number>
Specifies which relay to configure: 1 or 2.
<mode> Specifies relay mode. 0 = Off, 1 = On, 2 = Alarms.
<input alarm> Specifies which input alarm activates the relay when the
relay is in alarm mode: A - D (D1–D5 for 3062 option).
<alarm type> Specifies the input alarm type that activates the relay when
the relay is in alarm mode. 0 = Low alarm, 1 = High Alarm,
2 = Both Alarms.
Example RELAY 1,2,B,0[term] –relay 1 activates when Input B low alarm activates.
RELAY? Relay Control Parameter Query
Input
RELAY? <relay number>[term]
Format n
<relay number>
Specifies which relay to query: 1 or 2.
Returned <mode>,<input alarm>,<alarm type>[term]
Format n,a,n (refer to command for description)
RELAYST? Relay Status Query
Input
RELAYST? <relay number>[term]
Format n
<relay number>
Specifies which relay to query: 1 or 2.
Returned <status>[term]
Format n 0 = Off, 1 = On.
Bit Bit Weighting Status Indicator
0 1 invalid reading
4 16 temp underrange
5 32 temp overrange
6 64 sensor units zero
7 128 sensor units overrange