Appendix H: Modbus Memory Map - SMC Networks IT Series Instruction Manual

7.8 APPENDIX H: MODBUS MEMORY MAP

Read Register Table
Register Description
40001 Concentration
40002 Temperature
40003 High Alarm Relay
40004 Low Alarm Relay
40005 Low Alarm Value
40006 High Alarm Value
40007 Reserved
40008 Reserved
40009 Reserved
40010 Reserved
40011 Trouble Bits
40012 Trouble
40013 High Alarm Immediate
40014 Low Alarm Immediate
40015 Random ID
40016 Restart Count
40017 Run time – high
40018 Run time – low
40019 Max. gas value
40020 Model
40021 Range
40022 Units
40023 Temperature Units
40024 Gas Scale
40025 Temperature Scale
Model 5100-02-IT Combustible Gas Sensor Module
Comments
Gas Concentration multiplied by 100
Temperature in degrees Celsius scalled by a factor of 100
Boolean indicating the High Alarm Status, 0 No Alarm, 1 High Alarm
Boolean indicating the Low Alarm Status, 0 No Alarm, 1 Low Alarm
Low alarm set point, used for activating Alarms
High alarm set point, used for activating High Alarms
0 for no trouble
1 for any trouble, 0 for no trouble
Like 40003. but never latched
Like 40004, but never latched
Randomly generated permanent ID of sensor
In minutes
In minutes
*scale ((see 40024)
51002
*scale (see 40024)
1 is %LEL
0 is C, 1 is F
Value like 1 or 100
Value like 1 or 100
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