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Port2 (fieldbus): connectors S4, S5 MODBUS RTU/MODBUS RTU
Figure 24
Port2: Fieldbus Modbus RTU/Modbus RTU interface
Table 20
Connector S4/S5
Nr. Pin
RJ10 4-4 pin
4
3
2
1
Cable type: flat telephone cable for pin 4-4 conductor 28AWG
80999D_MHW_GFW 400-600A_07-2020_ENG
Name
1
GND1 (**)
2
Tx/Rx+
Data reception/transmission (A+)
3
Tx/Rx-
Data reception/transmission (B-)
4
+V (reserved)
Decription
-
(*) (*) Insert the line termination in the last device
(**) Connect the GND signal between Modbus
-
Connector S5
Connector S4
Line termination (*)
Note
on the Modbus line.
devices with a line distance > 100 m.
25
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