Baumer OX100 - Modbus RTU RS485 and IO-Link Setup

Baumer Commissioning | 7
V2 | OX100 Operating Manual 31
7.3 Set up RS485 interface with Modbus RTU
The sensor supports Modbus RTU and ASCII via RS485 for retrieving measured values and for
parameterization.
Communication via the RS485 interface is a serial master-slave communication, reason why the
serial communication parameters must first be known for all users:
n
Slave address: 1
n
Data bits: 8
n
Number of stop bits: 1 bit
n
Parity: even
n
Baud rate (bps): 19200 (default), to be optionally changed via the web interface
Example: Reading out measured values
Instruction:
a) Stellen Sie die Kommunikationsparameter (s.o.) am Master ein.
b) Read the input register.
Function ID: 04
Address 200: All Measurement values (see chapter Modbus RTU [}18])
Number of registers: 24
Result:
ü You receive the response telegram of the structure described in chapter Modbus RTU
[}18].
INFO
1 Modbus register corresponds to 2 bytes. If the data type of a sensor parameter is wider than a
2 byte Modbus register, the parameter is divided among several Modbus registers. The less sig-
nificant bits are located at the smaller address and the more significant bits at the larger ad-
dress (Little Endian).