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Sample Program: XGB-INV IG5A (RS-485 Modbus RTU)

The document describes a sample program for communication between an XGB PLC and an IG5A inverter using RS-485 Modbus RTU communication. Key details include: - The XGB PLC communicates with IG5A inverter station 1 via its built-in RS-485 port using Modbus RTU protocol at 19200 baud. - The XEC program transmits data from registers %MW0-1 to addresses 5-6 of the inverter to control frequency and run command. It receives data to registers %MW10-12 from the inverter. - The IG5A is configured for RS-485, Modbus RTU communication as station 1 at 19200

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Roozbeh Bahmanyar
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128 views4 pages

Sample Program: XGB-INV IG5A (RS-485 Modbus RTU)

The document describes a sample program for communication between an XGB PLC and an IG5A inverter using RS-485 Modbus RTU communication. Key details include: - The XGB PLC communicates with IG5A inverter station 1 via its built-in RS-485 port using Modbus RTU protocol at 19200 baud. - The XEC program transmits data from registers %MW0-1 to addresses 5-6 of the inverter to control frequency and run command. It receives data to registers %MW10-12 from the inverter. - The IG5A is configured for RS-485, Modbus RTU communication as station 1 at 19200

Uploaded by

Roozbeh Bahmanyar
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as PDF, TXT or read online on Scribd
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XGB-INV IG5A (RS-485 Modbus RTU) Sample program

Configuration

XEC PLC

RS-485 (Modbus communication)


Baud rate: 19,200, Data bit: 8, Stop bit: 1, Parity bit: None

Note that baud rate and stop/parity bit are selectable in I/O group.
* I/O group: I61  baud rate, I65: parity/stop bit setting.

Wiring Diagram (Max. total distance should be within 500m)


+ S+ S+

- S- S-

XGB iG5A iG5A


RS-485 Built-in Cnet Station no. : 1 Station no. : 2
Station no. : 0

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XGB-INV IG5A (RS-485 Modbus RTU) Sample program
The communication between IG5A and built-in XGB Cnet through ch2 (RS-485).
XEC Sample Program for only slave station no. 1

Reception
( %MW10
3 words )

Transmission
( %MW0, %MW1
2 words )

IG5A Setting
DRV=3(RS-485), FRQ=7(RS-485), I59=0(Modbus RTU),
I60=1(station no.), I61=4(19,200bps), I65=0(Parity:None, Stop Bit:1)
Eg) XEC (%MW0 1 Word data) -> address no. 5 of iG5A inverter (Frequency reference )
XEC (%MW1 1 Word data) -> address no. 6 of iG5A inverter (Run command )

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XGB-INV IG5A (RS-485 Modbus RTU) Sample program
XG-PD Parameter setting
① Please set “Channel 2 of Active mode” to “Use P2P settings” in using XG-PD of XG5000.

② You have to set P2P Channel to “Modbus RTU client.

③ P2P Block setting for only slave station no. 1

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XGB-INV IG5A (RS-485 Modbus RTU) Sample program

XG-PD download/Link enable

After link enable,


select [Online]—[Reset].

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