SL-014 v1.6 Page33
Document Ref: SL-014 v1.6
MODBUS INTERNAL MEMORY MAP ADDRESSES
FUNCTIONS:
Command
Function
Register
Sensor
Returned Word
Read Sensor Conc
04
30,001 to 30,999
1 to 999
Min = 0 (-10% LEL)
Max = 1200 (110% LEL)
Resolution = 0.1%
Read Sensor Volts
04
31,001 to 31,999
1 to 999
Min = 0 (0.00V)
Max = 500 (5.00V)
Resolution = 0.01V
Read Area Status
(T700 = Common
Alarms)
04
32,001 to 32,999
AREA
1 to 999
Bit0 = AL1
Bit1 = AL2
Bit2 = AL3
Bit3 = Fault
Bit4 = Sensor Disabled
Bit5 – Bit15 = Spare
Read Sensor Status
04
33,001 to 33,999
1 to 999
Bit0 = AL1
Bit1 = AL2
Bit2 = AL3
Bit3 = Fault
Bit4 = Sensor Disabled
Bit5 = Sensor Fault
Bit6 = Under Range Fault
Bit7 = Over Range Fault
Bit8 = Comms Fault
Bit9 = Spare
Bit10 = Spare
Bit11 = Spare
Bit12 = Spare
Bit13 = AL1 Muted
Bit14 = AL2 Muted
Bit15 = AL2 Muted
Mute all Alarms
05
1
ALL
Pass = 0
Fail = 1
Reset all Alarms
05
2
ALL
Pass = 0
Fail = 1
Disable Sensor
05
1,001 to 1,999
1 to 999
Pass = 0
Fail = 1
Enable Sensor
05
2,001 to 2,999
1 to 999
Pass = 0
Fail = 1
Zero Sensor
05
3,001 to 3,999
1 to 999
Pass = 0
Fail = 1
Set Add. Relay = On 05
4,201 to 4,232
4201 to
4232
Pass = 0 Fail = 1,2,3
(1=Timeout, 2=Already Used,
3=Not Implemented)
Set Add, Relay = Off 05
5,201 to 5,232
4201 to
4232
Pass = 0 Fail = 1,2,3
(1=Timeout, 2=Already Used,
3=Not Implemented)
