Polycold Cryochiller
Host Commands
Installation and Operation Manual
Compressor Operational State Commands
Brooks Automation
214072 Revision B
7-29
Compressor Operational State Commands
COMP_MOTOR_STATE Refrigerant Compressor On/Off State
Compressor Sensor Readings
UNIT_BALANCE_PRESS Compressor Static Charge Pressure
Purpose:
Get/Set the refrigerant compressor motor on/off state.
Parameter(s):
[n],? or [n1]
[n] is
0 = Refrigerant compressor
1 = Not Used
[n1] is motor state
0 = motor off (contactor open)
1 = motor on (contactor closed)
Return Value:
[A] or [A][n1]
Default Value:
N/A
Security Level
Get: 1
Set: 2
Example:
“COMP_MOTOR_STATE,0,?” Get the motor state.
Interface
RS-232, Ethernet
Purpose:
Get the unit balance (static charge) pressure.
Parameter(s):
[n],?
[n] is
0 = Refrigerant compressor
1 = Not Used
Return Value:
[A] [nnn.n]
Default Value:
N/A
Units:
PSI
Security Level
Get: 1
Set: N/A
Example:
“UNIT_BALANCE_PRESS,0,?”
Interface
RS-232, Ethernet
