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TF6581_C_NOT_INST_C02_SENSOR_MODBUS
Aereco S.A.
1
3
4
5
2
TF5414_B
B
A C D
E
F
0
Modbus address rotary switch for selecting
sensors ( on the sensor's PCB)
2W-Modbus on RJ45 socket pin-out
6.
THE S-C02/T CONNECTIONS WITH THIRD PARTY MODBUS
SYSTEMS
6.1. SETTING OF THE S-C02/T SENSORS FOR THIRD PARTY MODBUS
SYSTEMS
15 indexation positions are allowed for Modbus addressing: position 1 to position F included.
Address 0 is not available.
Important: Up to 15 sensors can be connected to the Modbus and each sensor must have a
different address from others in diasy chain.
Note: the sensors are delivered in position 0. They must be manipulated with extreme care.
6.2. THE S-C02/T ELECTRICAL CONNECTIONS WITH THIRD PARTY MODBUS
SYSTEMS
Disconnect the electrical power supply before any operations. The S-C02/T Modbus sensor com-
municates with other components through Modbus connection which is made by a RS485 interface
connected through a double RJ45 connector for daisy chain linking.
All the components are linked to each other via a daisy-chain whose length should not exceed 200 m
with shielded CAT5E cable or better. At the beginning and at the end of the daisy-chain, a termination
is needed. An electrical control board that contains a converter USB -> RS485 and a BUS polarization
is necessary for the Modbus connection schemes. Aereco offers an optimal solution of electrical control
board (ref: ADX1785EX) that is adapted to its S-CO2/T Modbus sensors.
