Configuring The Rs-485 Port Of Wise-4051 - Advantech WISE-4000 Series User Manual

4.2.7

Configuring the RS-485 Port of WISE-4051

WISE-4051 has one RS-485 port for Modbus gateway function, thus you can use this
port to polling the data from RS-485 Modbus/RTU slave devices, like ADAM-4000, or
ADAM-5000/485.
4.2.7.1 External Coils or Registers Status of RS-485 Port
Go the "COM1" tab to check the status or configure the Modbus Master function of
RS-485 port. There can be total 32 addresses of all Modbus slave to be mapped as
the I/O of WISE-4051. These 32 addresses can be coils or registers. The coils will be
mapped as extension bits of WISE-4051, and the registers will be mapped as exten-
sion words of WISE-4051. So in the "Status" tab, you can see the bits or words are
shown in individual pages.
Column "Channel" indicate the number of bits, there are maximum 32 bits can be
shown here, but you may only mapping less than 32 coils as bits, so the empty bits
are invalid. Same as words may also have empty channels.
Column "Value" shows the value polling from mapped address.
Column "Status" shows the status of each bits or words, if the channel is empty which
did not be mapped to Modbus slave address, the status will shows "Unavailable".
Column "Slave ID" and "Slave Address" show where the bit or word from RS-485
Modbus slave device.
Column "Mapping Address" shows the Modbus address of bits or words when WISE-
4051 be polled by Modbus/TCP. The default setting of extension bits is from Modbus
address 01001 of WISE-4051, and extension words is from Modbus address 41001
of WISE-4051. There are 32 address reserved for extension bits or words for WISE-
4051.
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