Page 6 of 14
16
Unsigned 8
Device status
17 to 18
Unsigned
16
Manufacturer ID code = Hex 60 42
3.2 Command 1
Use command 1 to read the Primary Variable.
Response to command 1:
Alarm and Device status is save into the Primary Variable (Unit in ma), where :
.
Byte
Format
Description
0
Code
Unit code in ma
1 to 4
Float
0 ma : PCB fault, Voltage fault, temperature fault, relay
fault.
2 ma : Optical Self Test fail & Lid Off fault.
4 ma : Normal.
20 ma : Alarm
3.3 Command 2
Use command 2 to read Loop current (ignore percent range).
Response to command 2:
The loop current always matches the current that can be measured by milli-
ammeter in series with the device. This includes the loop current under alarm
conditions. SS4 flame sensors does not have percent value, therefore please
ignore the percent output of this response.
Byte
Format
Description
0 to 3
Float
Loop Current in milli-ampere
0 ma : PCB fault, Voltage fault, temperature fault, relay
fault.
2 ma : Optical Self Test fail & Lid Off fault.
4 ma : Normal.
20 ma : Alarm
4 to 7
Float
% reading.
0ma = 0%
