Commissioning
6.4 Modbus configuration for SITRANS SL
SITRANS SL
Operating Instructions, 12/2010, A5E01132948-04
107
6.4.3 Supported Modbus functions
Modbus defines a set of data and control functions to perform data transfer and slave
diagnostic.
The following Modbus functions are implemented:
● 0x01 Read Coils
● 0x02 Read Discrete Inputs
● 0x03 Read Holding Registers
● 0x04 Read Input Registers
● 0x05 Write Single Coil
● 0x06 Write Single Register
● 0x08 Diagnostics, Echo Only (sub function 0)
● 0x0F Write Multiple Coils
● 0x10 Write Multiple Registers
● Enron Modbus Support
– Support for 32-bit registers via codes 0x03 and 0x10
– Optional support for offset 0 between frame and application
See also
Modbus interface (Page 136)
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