DOLD VARIMETER IMD RN 5897/011 Handmatig - Pagina 13

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Bus Interface

Protocol

Modbus Seriell RTU

Adress

1 to 99

Baud rate 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200 Baud

Data bit

Stop bit

Parity

None

More information about the interface, wiring rules, device identification

and communication monitoring can be found in the Modbus user manual.

Function-Codes

At RN 5897/011 the following function codes are implemented:

Function-

Name

Code

0x01

Read Coils

0x03

Read Holding Register

0x04

Read Input Register

0x05

Write Single Coil

0x06

Write Single Register

0x10

Write Multiple Register

Device configuration

Device configuration data (parameters and setting values from register

42001, as well as the "factory setting" command) are directly stored in the

EEPROM in non-volatile memory when writing via Modbus. As the write

cycles of an EEPROM are limited, the write operation with these registers

or this command must not be cyclic.

30.06.23 de / 752A