Siemens Simatic S7-300 CP 341 User Manual page 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.
Figure 6-8
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.
CP 341 Point-to-Point Communication, Installation and Parameter Assignment
Manual, 09/2008, A5E02191071-01
www.gkbpx.com
6.6 Use of function blocks to output message texts to a printer
Time sequence chart for FB 13 P_PRINT_RK
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Communication via Function Blocks
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