The BB2-7010 can be a Modbus RTU master or slave. As a master you can read Modbus data from, or
write Modbus data to, other Modbus slaves. The BB2-7010 will periodically poll the other Modbus devices
according to register maps you set up. To read from a remote Modbus device, configure a Read Map. To
write to a remote Modbus device, configure Write Map.
Data read from a remote device is stored in a local register when received. Data written to a remote
device is taken from a local register when sent. The local registers are the same collection of registers that
are accessible to other masters when operating as slave, and accessible to other Modbus TCP devices as a
collection of holding registers.
5.1 Modbus RTU Device Configuration
Modbus device configuration for RTU really consists of port configuration, and includes setting the slave
address if the BB2-7010 is functioning as Modbus slave.
Select baud rate and parity from the drop down list. Click either Master or Slave buttons to select type of
operation. Enter timing parameters or address as applicable. Click update to register your changes.
5. Configuring BB2-7010 as a Modbus RTU Master
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