Input Status Flags; Output Status Flags - Emerson MRLDS-250 Installation And Operation Manual

7.5.

Input Status Flags

Input Status Flags are readable (using function code 02).
Reg
3000 Alarm flag (0 or 1=Alarm)
3001 Relay state (0 or 1=energized)
3002 Detector fault (0 or 1=fault)
3003 Red LED state (0 or 1=ON)
3004 Green LED state (0 or 1=powered
on)
3005 Reserved
3006 Start up (0=normal operation,
1=warming up)
3007 Reserved
3008 Reserved
Table 7-3 - Input Status Flags
7.6.

Output Status Flags

Output Status Flags are readable (using function code 01) and writable (using function code 05).
Reg
4000 Buzzer flag (0 or 1=ON)
4001 Test required (If operating for >1
year). (1=requires testing)
Table 7-4 - Output Status Flags
26 • MRLDS-250 Infrared Gas Detector I&O Manual
Description
Description
Range P.-##
0-1 - -
0-1 - -
0-1 - -
0-1 - -
0-1 - -
- -
0-1 - -
- -
- -
Range P.-##
0=Off - -
1=On
0=Okay - -
1=Test
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