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CHILLER SPI COMMANDS UGH004/0999
APPENDIX B-4
Status, Machine 2
Poll: 0x21 0x44
SPI STATUS WORD
Word BIT position 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
EEprom error SET SET
*
A/D converter error SET SET
*
CJC Error SET SET
*
RAM hardware SET SET
*
ROM checksum SET SET
*
Probe Failure SET SET SET
*
E/M Hi temp safety
*
Prog. Hi temp safety
*
Output monitor failure SET SET
*
Low water pressure
*
High deviation alarm
*
Low deviation alarm
*
Prog. Lo temp safety
*
Pump overload SET SET
*
Refrig. Pressure SET SET
*
Oil Safety SET SET
*
Compressor overload SET SET
*
Freeze Stat
Low water level SET SET
*
Test Mode
*
Phase error
*
NOTES:
*
The SPI I/O list defines the Processing bit as being cleared if the unit is not processing; otherwise it is SET.
Elsewhere on the chart:
● If a bit is not shown to be SET, it is cleared.
● The System Alarm bit is SET if an alarm is present. It is the logical OR of Process alarm and Machine alarm.
● Processing, System Alarm, Process Alarm and Machine Alarm bits are repeated for Process Status, Machine 1
Status and Machine 2 Status.
SPI STATUS WORDS
Open
Open
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Fault, CAL
Fault, Sensor
Alarm, Machine
Alarm, Process
Alarm, System
Processing