FALCO Instrument User Manual V1.2R
Unrivalled Gas Detect
ion.
Page 14 of 46
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RS485 Modbus Interface
The FALCO Modbus interface uses Modbus RTU
•
9600 baud, 8 data bits, no parity, 1 stop bit.
Register
Address
Name
Function Code
Data Type
Range
Register
Qty
102
Gas concentration
3 - Read Holding
Registers
32-bit Float
±1.175494E-38 to ±3.38
2
106
Sensor
Voltage(mV)
3 - Read Holding
Registers
32-bit Float
±1.175494E-38 to ±3.38
2
108
Temperature (°C)
3 - Read Holding
Registers
16-bit Signed
Integer
-32768 to +32767
1
182
LED Brightness
3 - Read Holding
Registers
16-bit unsigned
Integer
0 to 100
1
1003
Hardware Version
3 - Read Holding
Registers
16-bit unsigned
Integer
1 to 255 (Default value 1)
1
1005
Measurement Unit
3 - Read Holding
Registers
Character
‘p’ or ‘g’ (Default value ‘p’)
1
1010
Response Factor
3 - Read Holding
Registers
32-bit Float
0.1 - 10.00
2
1012
Sensor Range
3 - Read Holding
Registers
16-bit unsigned
Integer
10, 50, 1000, 3000 (Default value
3000) Falco
TAC
50 (Default value 50)
1
1060
Cal 100
3 - Read Holding
Registers
16-bit unsigned
Integer
0 to 65535 (Default value 500)
1
1061
Cal3000
3 - Read Holding
Registers
16-bit unsigned
Integer
0 to 65535 (Default value 3000)
1
