Conair MPW, MPA Status, Machine, APPENDIX B-3, Spi Status Words, Chiller Spi Commands, Poll 0x21

SPI STATUS WORDS

Status, Machine 1

Poll: 0x21 0x42

SPI STATUS WORD

Open

Alarm,Phase

Alarm,Low current

Alarm,High current

Alarm,Low volts

Alarm,High volts

Reserved

Reserved

Alarm,Low pressure safety limit

Alarm,High pressure safety limit

Alarm,Low temperature safety limit

Alarm,High temperature safety limit

Alarm,Machine

Alarm,Process

Alarm,System

Processing

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

*

E/M Hi temp safety

SET

SET

SET

*

Prog. Hi temp safety

SET

SET

SET

*

Output monitor failure

SET

SET

*

Low water pressure

SET

SET

SET

*

High deviation alarm

*

Low deviation alarm

*

Prog. Lo temp safety

SET

SET

SET

*

Pump overload

SET

SET

*

Refrig. Pressure

SET

SET

*

Oil Safety

SET

SET

*

Compressor overload

SET

SET

*

Freeze Stat

SET

SET

*

Low water level

SET

SET

*

Test Mode

*

Phase error

SET

SET

SET

*

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.

UGH004/0999 CHILLER SPI COMMANDS APPENDIX B-3