ICP CON I-7550E, Руководство пользователя, Страница: 18 / 102

I-7550E PROFIBUS/Ethernet Converter User Manual
(Version 1.00, June/2014)
PAGE: 18
Figure 13 System setting module is selected first

Set Operation Mode for transferring data between PROFIBUS Master
and Ethernet device
In data exchange mode, the I-7550E will always receive data from Ethernet, and
the data will be put in Ethernet FIFO (Please refer to section 3.2). But the data
won’t be transfer to PROFIBUS Master until the user sets the I-7550E in
Read/Write mode (Set Byte 0 of output area in “System setting module” as 1). In
the same time, the user needs to change the value of Trigger byte then the I-7550E
will transfer data to Ethernet device (Please refer to section 3.3.1) as shown
Figure 14 .
PROFIBUS
Master
Cyclic Data
exchange
Output Data
(Max:240 Bytes)
Byte 0
Byte 239
Internal
memory
PROFIBUS FIFO
Cyclic Data
exchange
0x01
Byte 1
0x00->0x01
Ethernet Device
Set Byte 0 as 1
Change Byte 1 value to trigger
data exchange
Data
Byte 19
Figure 14 Read/Write Mode for transferring data.