11Modbus RTU
4.4 Determining the Modbus RTU interface parameters
The following interface parameters are xed and can not be modied:
– 1 start bit
– 8 data bits
– 1 parity bit
– 1 stop bit
The following Modbus RTU settings must be specied. Changes to these settings only become
effective after a restart!
Select "Communication" (Path: Menu > Password entry 8808 > Conguration > Communication). In
the "Communication" submenu scroll to "Modbus-Parameter" tab. Touch the "Modbus" eld, set Mod-
bus function to "Modbus/RTU" and conrm with the check mark button. The setting parameters for the
Modbus RTU communication appear.
Modbus Address: With this setting you determine the Modbus address for
the device for the communication via a Modbus network.
Note: The same address may only be assigned once per Modbus network.
Factory setting: 10
Setting range: 1 ... 247
Parity: With this setting you set the parity bit for the data transfer.
Factory setting: Even
Options: None, Even or Odd
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