User Manual
Universal Serial/PROFIBUS DP Gateway
GT200-DP-RS
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21
The output buffer can be regarded as Input Status (1x) area and Input Register (4x) area for the Modbus master.
The data of the output area can be read by function code 02 or 04. The PROFIBUS DP master writes the data to
the output buffer.
The data communication between PROFIBUS DP master and Modbus master through GT200-DP-RS is shown
below.
GT200-DP-RS
Input Buffer
GT200-DP-RS
Output Buffer
(0x / 4x)
(1x / 3x)
0000H
4000H
0001H
4001H
0002H
4002H
0003H
4003H
0004H
4004H
0005H
4005H
...
...
Modbus Master
PROFIBUS
DP Master
PROFIBUS
DP Master
01, 03
05, 06,
15, 16
Modbus Master
02, 04