ICP DAS USA GW-7553-B User Manual page 79

10 79 C6" and then MBRTU can receive response message (" 01 02 02 00 00
B9 B8"). In this message, the user can know the value of DI0 & DI1 is "0" in
the GW-7553.
--Send output data to write DI of the GW-7553 by the PROFIBUS Master
The user needs to set "0xFE" & "0xDC" in byte 3 & byte 4 of output data
area in the configuration program "SyCon" 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-7553 again
Now the user can input command (" 01 02 00 00 00 10") in MBRTU and
click <Send Command> button to send Modbus command: "01 02 00 00 00
10 79 C6" 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-7553, as shown in Figure 44,
Figure 45 , Figure 46 & Table 18
Figure 74 Send Modbus command to read DI of the GW-7553
GW-7553-B / GW-7553-M PROFIBUS/Modbus TCP Gateway User Manual (Version 1.35, May/2017)
PAGE: 79
Set output data and trigger output data command
.