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area of Profibus master device and then set the value of the first byte from 0
to 1 to trigger the data output command.
--Send Command to read DI of the GW-7552 again
Now the user can input command (" 01 02 00 00 00 10") in MBRTU and
click <Send Command> button to send Modbus command again. Then
MBRTU can receive response message (" 01 02 02 FE DC F8 41"). In this
message, the user can know the value of DI0 & DI1 have changed into
"0xFE" & "0xDC" in the GW-7552, as shown in the below.
Module
System
module
Output
module
Send Modbus command to read DI of the GW-7552 and receive data (0xFE, 0xDC)
GW-7552 PROFIBUS/MODBUS GATEWAY Quick Start User Guide (Version 1.00)
Set output data and trigger output data command
Byte
Data type Representation
Output 0
Output 1
Output 2
Output 3
Byte
Hex
Byte
Hex
Byte
Hex
Byte
Hex
Value
→
0x00
0x01
0x00
→
0x00
0xFE
→
0x00
0xDC
PAGE：8
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