Appendix C: Modbus Address Table
C-1. DL-301 Modbus Address Mappings (Base 1)
Address Description
30001 ~
Analog input value of channel 0 to 5.
30006
channel 0: CO in 1ppm,
40001 ~
channel 1: relative humidity in 0.01%,
40006
channel 2: temperature in 0.01°C,
channel 3:temperature in 0.01°F,
channel 4: dew point temperature in 0.01°C,
channel 5: dew point temperature in 0.01°F
40225 ~
High alarm limit of channel 0 to 5,
40230
channel 0: CO in 1ppm,
channel 1: relative humidity in 0.01%,
channel 2: temperature in 0.01°C,
channel 3:temperature in 0.01°F,
channel 4: dew point temperature in 0.01°C,
channel 5: dew point temperature in 0.01°F
40234 ~
Low alarm limit of channel 1 to 5,
40238
channel 1: relative humidity in 0.01%,
channel 2: temperature in 0.01°C,
channel 3:temperature in 0.01°F,
channel 4: dew point temperature in 0.01°C,
channel 5: dew point temperature in 0.01°F
40272
Modbus NetID
Only for Modbus TCP protocol
30301
Number of the digital input channels
40301
Only for Modbus TCP protocol
30311
Number of the digital output channels
40311
Only for Modbus TCP protocol
30321
Number of the analog input channels
40321
Only for Modbus TCP protocol
C-1. DL-301 Modbus Address Mappings (Base 1)
Attribute
R
R/W
R/W
R/W
R
R
R
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