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Function Blocks
Revision 11
HC900 Hybrid Control Designer Function Block Reference Guide
83
2/07
Output Description
ALMUNACK
Alarm unacknowledge is ON if any operator panel’s alarm is unacknowledged.
HWOK
Hardware OK is ON if there are no faults.
LOWBTRY
Low Battery is ON if the battery is low, Off when battery is good.
HI TEMP
High CJ Temperature is ON if the CJ temperature is high.
MSTR FAIL
Communications Failure is ON when Modbus master diagnostic is not good
BAD BLOCK
Bad Block is ON when one or more blocks are not operating properly.
LOCKED
On when Controller Mode switch is locked in the current mode by switch position.
TIME OFF
Number of seconds power was turned off. Valid for one cycle of control blocks execution following
power up. Then it is cleared to zero.
DS LIMIT
ON when the configuration storage warning limit is exceeded. OFF when the storage capacity falls
below the warning limit.
RSV AVAIL
C70R controllers only. ON when the Reserve CPU is available for failover. OFF when the Reserve
CPU is unavailable for failover.
On other controllers this pin is called “N/A” and serves no purpose other than a placeholder for
RSV AVAIL.
Possible reasons:
No Reserve CPU installed.
Hardware failure is preventing database synchronization between the CPUs.
Firmware mismatch between the CPUs.