Polycold Cryochiller
Host Commands
Installation and Operation Manual
System Operational State Commands
Brooks Automation
214072 Revision B
7-19
ACTIVE_ALARMS Current Active Alarms
Return Value:
[A] or [A], [alarm status bits] or [A], [circuit 1 alarm status bits], [circuit 2
alarm status bits]
The alarm name and status.
“alarm name” is the name used to refer to the alarm
“alarm status bits” is a bit field with the following values:
bit 0: 0 = warning, 1 = alarm
bit 1-4: alarm or warning level as an integer.
bit 5: alarm clear state (0 = not cleared, 1 = cleared)
bit 6: alarm acknowledge state (0 = not acknowledged, 1 = acknowl-
edged)
Default Value:
N/A
Security Level
Get: 1
Set: N/A
Example:
“ALARM_STATUS,0,40000,?” returns the alarm status of the cool tem-
perature ramp monitor alarm
Interface
RS-232, Ethernet
Purpose:
Get the current active alarms and warnings
Parameter(s):
[n],?
[n] is
0 = Warnings
1 = Alarms
2 = Both
Return Value
[A],[nnnnnnnn], [nnnnnnnn], [nnnnnnnn]
parameter 1: Equipment operation alarms: 32 bit number / bitfield (differ-
ent from parameter 1 from FAULT_STATUS) hex encoded
•
bit 0: C1/C2 USER TC FAILED
•
bit 1: Not Used
•
bit 2: LOW REFRIG TEMP
•
bit 3: Not Used
•
bit 4: PRESS SENSOR FAULT
•
bit 5: EXCESS SUCT PRESS
•
bit 6: SYSTEM DATE (Not Supported)
•
bit 7: HIGH DISCHRG PRESS
•
bit 8: DISCHARGE TEMP
•
bit 9: Not Used
•
bit 10: VOLT OUT OF RANGE
•
bit 11: COOLING WATER
•
bit 12: WATER TEMP HIGH
•
bit 13: PRESSURE SWITCH
•
bit 14: LOW SUCT PRESSURE
•
bit 15: THERMAL OVERLOAD
