20-2
20.
MODBUS
20.1.1 MODBUS RTU
Communication Setting
Editor
Communication setting
(Underlined setting: default)
Format setting
Make communication format settings for each connected device.
*1
Format setting on V-SFT and function code for the Modbus communication
Item
Setting
Remarks
Connection Mode
1 : 1 / 1 : n / Multi-link2
Signal Level
RS-232C / RS-422/485
Baud Rate
4800 / 9600 / 19200 / 38400 / 57600 / 115K bps
Data Length
8 bits
Stop Bit
1 / 2 bits
Parity
None / Odd / Even
Target Port No.
1 to 255
No. 1 to 255
Port number of the connected device
Device connected
Select a connected device for each number. When creating screen data, you can set memory by referring
to the list file of the device selected here.
Read Coil
Format setting
Set the number of words to be read or written at one communication for each memory.
The format setting also serves as the function code
*1
setting used for Modbus communication. The
available function codes vary depending on the device used. Refer to the instruction manual of the
connected device as well as the table shown below, and set the options on the dialog correctly.
Write to Coil
Read Input Relay
Read Holding Register
Write Holding Register
Read Input Register
Format Setting
Modbus Communication
Function Code
Reading coil
01H
Writing coil
1 bit
05H
16 bits or more
0FH
Reading input relay
02H
Reading holding register
03H
Writing holding register
1 word
06H
2 words or more
10H
Reading input register
04H
Содержание Monitouch S8 series
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