Modbus Setup - E+E Elektronik EE850 User Manual

3.5.4

Modbus Setup

Item
Baud rate
Data bits
Parity
Stop bits
Slave address
Tab. 1 Digital interface default settings
The recommended settings for multiple devices in a Modbus RTU network are 9600, 8, even, 1.
The EE850 represents 1/10 unit load on an RS485 network.
Device address, baud rate, parity and stop bits can be set via:
1. EE-PCS Product Configuration Software and the Modbus configuration adapter HA011066.
The EE-PCS can be downloaded free of charge from
2. Modbus protocol in the register 60001 (0x00) and 60002 (0x01).
See Modbus Application Note AN0103 (available on www.epluse.com/EE850)
The serial number as ASCII code is located in the register addresses 0x00...0x07 (16 bits per address).
The firmware version is located in the register address 0x08 (bits 15...8 = major release; bits 7...0 =
minor release). The beforementioned registers can be read out with function code 0x03 or 0x04.
The measured data is saved as 32 bit floating point values (data type FLOAT) and as 16 bit signed
integer values (data type INTEGER).
FLOAT 32 bit
Parameter
Read register: function code 0x03
Temperature T
Relative Humidity
CO (average)
2
CO (raw)
2
Water vapour partial pressure
Dew point temperature
Absolute humidity
Mixing ratio
Specific enthalpy
Frost point temperature
1) Register number starts from 1
2) Register address starts from 0
10
Factory settings
9 600 9 600, 19 200, 38 400, 57 600, 76 800, 115 200
8 8
Even None, odd, even
1 1, 2
67 1...247
Unit
° C
° F
%
ppm
ppm
mbar
psi
°C
°F
g/m
3
gr/ft
3
g/kg
gr/lb
kJ/kg
ft lb/lb
BTU/lb
°C
°F
Selectable values (via EE-PCS)
www.epluse.com/configurator
Register number [DEC]
1)
1003
1005
1021
1061
1063
1101
1103
1105
1107
1113
1115
1121
1123
1125
1127
1129
1131
1133
Register address [HEX]
2)
0x3EA
0x3EC
0x3FC
0x424
0x426
0x44C
0x44E
0x450
0x452
0x458
0x45A
0x460
0x462
0x464
0x466
0x468
0x46A
0x46C
User Manual EE850 Duct Sensor