12
Control
Command Quick Reference
Serial commands are not case-sensitive. The commands are capitalized below to differentiate them from the variables.
General Commands for All Devices
Change the unit ID:
unit_id
@
desired_id
Tare flow:
unit_id
V
Tare gauge pressure:
unit_id
P
Tare absolute pressure:
unit_id
PC
Poll the live data frame:
unit_id
Begin streaming data:
unit_id
@@
Stop streaming data:
@@
desired_unit_id
Set streaming interval:
unit_id
NCS
number_of_ms
Query live data info:
unit_id
??D*
Manufacturer info:
unit_id
??M*
Firmware version:
unit_id
VE
Controller Commands
New setpoint:
unit_id
S
setpoint_value
Hold valve at current position:
unit_id
HP
Hold valve closed:
unit_id
HC
Cancel valve hold:
unit_id
C
Mass Flow Gas Select™
Query gas list info:
unit_id
??G*
Choose a different gas:
unit_id
G
gas_numbe
r
Note:
For more information on our serial communication commands, please see the Serial Primer at alicat.com/manuals.
Advanced ASCII Commands
The command set on IM devices has been reduced for space. The following commands are listed in the Serial Primer
but are
not available
with IM Series devices:
General commands
E: Exhaust
GRH: Set / query relative humidity
GRHE: Set / query humidity information
L: Lock display
P1: Tare primary pressure sensor
P2: Tare secondary pressure sensor
TCP: Totalizer pulse configuration
U: Unlock display
Liquid properties commands
QLD, QLEG, QLEV, QLR, QLV
Omitted parameter values
All barometer statistics
All statistics related to secondary pressure
All statistics related to humidity / dew point / water vapor
The FPC command will not return any values related to the display
Support for a secondary analog output
Support for a second valve (for closed loop control or for on/off purposes).
