Command #188: Write Relay Normal State
This command sets the Ultima X Normal relay state. This is a single
byte containing a bit map of the three alarm relays’ non alarm states.
Not all gas sensors have on-board relays.
Request Data Bytes
BYTE FORMAT DESCRIPTION
0 Bit 0 Alarm #1 0 = normally de-energized, 1 = normally energized
0 Bit 1 Alarm #2 0 = normally de-energized, 1 = normally energized
0 Bit 2 Alarm #3 0 = normally de-energized, 1 = normally energized
Response Data Bytes
BYTE FORMAT DESCRIPTION
0 Bit 0 Alarm #1 0 = normally de-energized, 1 = normally energized
0 Bit 1 Alarm #2 0 = normally de-energized, 1 = normally energized
0 Bit 2 Alarm #3 0 = normally de-energized, 1 = normally energized
Command-Specific Response Codes
CODE CLASS DESCRIPTION
0 Success No Command-Specific Errors
1-4 Undefined
5 Error Too few data bytes
6 Undefined
7 Error In write protect mode
8-15 Undefined
16 Error Access Restricted
17-31 Undefined
32 Error Busy
33-127 Undefined
D-29
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