MB 700 H Series, Operation Manual

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3.4.3 Serial Port -RS485
Soiling station serial port - RS485 are shown in figure 3.4.3 below. This port can be
used only as MODBUS slave to read soling parameters.
Figure-3.4.3: Soiling station serial port-1 (RS485) connections.
Note: Serial port-2 is not used.
Connection details for the serial port are listed in table-3.4.3.1 below.
Table-3.4.3.1: Soiling station serial port- RS485 connections
Default configuration for the serial RS485 port is provided in table 3.4.3.2 below.
Table-3.4.3.2: Default port configuration parameters
Terminal Wire Colour Function Remarks
T7 White A Isolated RS485 port.
LED Rx and Tx provide indication
for port activity.
Can operate only as MODBUS
RTU Slave.
Use low capacitance, twisted pair
and shielded cable for connecting
devices to the port.
T8 Green Shield
T9 Brown B
S. No. Description Value
1 Baud rate 9600
2 Data bits 8
3 Parity None
4 Stop bits 1
5 MODBUS Slave address 1