Flintec DAD 141.1 Modbus Communication Bedienungsanleitung PDF herunterladen (Seite 2)

DAD 141.1 Technical Manual Modbus Communication, Rev. 2.3 - Juni 2014 Page 2

1. How to use Modbus in DAD 141.1

1.1. Implemented functions for Modbus RTU and Modbus TCP.

 0x03 Read holding registers: Used for reading 16 or 32bit values.

 0x04 Read input registers: Same as above.

 0x06 Write single register: Used for writing 16bit values.

 0x10 Write multiple registers: Used for writing 32bit values.

1.2. Modbus RTU

 The baudrate must be set in menu 8.1.

 In multidrop or 2 wire applications the user must select "485" in menu 8.2 or "422" for

point to point 4 wire applications.

 A Modbus address between 1 and 247 must be set in menu 8.3.

 The parity used in the actual Modbus network must be selected in menu 8.7

(select no or o = odd or e = even).

 The Modbus RTU mode must be selected in menu 8.8 (select RTU).

1.3. Modbus Protocols

1.3.1. Modbus RTU via Serial Port

 binary data protocol

1.3.2. Modbus TCP via Ethernet Port:

 binary data protocol, embedded in TCP/IP packages

 Modbus TCP port: 502

 IP address is 192.168.0.100 (factory default)

1.4. Modbus Index Tables

See the following pages.

1 2 3 4 5 6 7 8 9 10

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Flintec DAD 141.1 Modbus Communication Bedienungsanleitung Seite 2