Siemens Simatic S7-300 CP 341 - Fetching Data with RK 512; Figure 2-15 Data Traffic When Fetching with a Response Message Frame

Basic Principles of Serial Data Transmission
2.5 Data Transmission with the RK 512 Computer Connection
CP 341 Point-to-Point Communication, Installation and Parameter Assignment
56 Manual, 09/2008, A5E02191071-01
2.5.2 Fetching Data with RK 512
Fetching data with RK 512
The figure below shows the transmission process when fetching data with a response
message frame using the RK 512 computer link.
&3

&RQQHFWLRQ
WHUPLQDWLRQ
&RPPXQLFDWLRQSDUWQHUV
6WDUWFKDUDFWHU+
3RVDFNQRZOHGJHPHQW +
+
+
)(7&+UHTXHVW+
'DWD  EORFN  +
'DWDVRXUFH
'DWDRIIVHW
/HQJWKZRUG
':
1R.0))+
&38RQO\)+
6WDUWFKDUDFWHU+
3RVDFNQRZOHGJHPHQW +
+
+
+
(UURUQXPEHU+
VW'DWDE\WH
QG'DWDE\WH
Ⴠ
Ⴠ
QWKGDWDE\WH
(QGGHOLPLWHU+
(QGGHOLPLWHU+
2QO\ZLWKEORFNFKHFN
3RVDFNQRZOHGJHPHQW +
67;
'/(
VW%\WH
QG%\WH
UG%\WH
WK%\WH
WK%\WH
WK%\WH
WK%\WH
WK%\WH
WK%\WH
WK%\WH
'/(
(7;
%&&
'/(
67;
'/(
VW%\WH
QG%\WH
UG%\WH
WK%\WH
WK%\WH
WK%\WH
Ⴠ
Ⴠ
QWK%\WH
'/(
(7;
%&&
'/(
(QGGHOLPLWHU+
(QGGHOLPLWHU+
2QO\ZLWKEORFNFKHFN
3RVDFNQRZOHGJHPHQW +
&RQQHFWLRQ
VHWXS
0HVVDJH
IUDPH
KHDGHU
&RQQHFWLRQ
WHUPLQDWLRQ
&RQQHFWLRQ
VHWXS
5HVSRQVH
IUDPH
KHDGHU
%HQHILW
LQIRUPDWLRQ
5HVSRQVHIUDPHZLWKGDWD
)(7&+IUDPH
+
+
':+
'%+
Figure 2-15 Data traffic when fetching with a response message frame
该文档是极速PDF编辑器生成，
如果想去掉该提示,请访问并下载：
http://www.jisupdfeditor.com/
长沙工控帮教育科技有限公司
www.gkbpx.com