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GW-7553-B / GW-7553-M PROFIBUS/Modbus TCP Gateway User Manual
(Version 1.35, May/2017)
PAGE: 88
Figure 85 Send Modbus command (output data: 0xFF, 0xFF)
Figure 86 Receive “0xFF” in the input data area
Table 25 Receive “0xFF” in the input data area
Module
Byte
Data type Representation
Value
Input module
Input 6
Byte
Hex
0xFF
Input 7
Byte
Hex
0xFF
PS:
Modbus command:
Query message
DA
FC
SA
(Hi)
SA
(Lo)
NO
(Hi)
NO
(Lo)
BC
DATA
01
0F
00
00
00
10
02
FF
FF