Siemens Simatic S7-300 CP 341 - Page 169

Communication via Function Blocks
6.6 Use of function blocks to output message texts to a printer
CP 341 Point-to-Point Communication, Installation and Parameter Assignment
Manual, 09/2008, A5E02191071-01 169
Time sequence chart for FB 13 P_PRINT_RK
The figure below illustrates the behavior of the DONE and ERROR parameters depending
on the input circuit of REQ and R.
6HQGLQJUHTXHVW &RPSOHWLRQZLWKRXWHUURUV VWQWK35,17SDUW 5(6(7WUDQVPLWWHG &RPSOHWLRQZLWKHUURUV 5(6(7WUDQVPLWWHG &RPSOHWLRQZLWKRXWHUURUV 35,17UHTXHVWLV QRWH[HFXWHG VHQGLQJLV GLVDEOHG
Figure 6-8 Time sequence chart for FB 13 P_PRINT_RK
Note
The REQ input is edge-triggered. A positive edge at the REQ input is sufficient. It does not
have to have a signal state of "1" during the entire transmission operation.
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