
Libraries
9.4 Open user communication library
S7-200 SMART
510
System Manual, V2.3, 07/2017, A5E03822230-AF
9.4.2.4
TCP_SEND instruction
The TCP_SEND instruction transmits the requested number of bytes (DataLen) from the
requested buffer location (DataPtr) over the existing connection (ConnID). You use the
instruction for both TCP protocol and for ISO-on-TCP protocol.
LAD/FBD
STL
Description
TCP_SEND Req, ConnID,
DataLen, DataPtr, Done,
Busy, Error, Status
The TCP_SEND transmits the requested number of bytes from the
requested buffer location over an existing connection.
The TCP_SEND instruction initiates sending the specified number of bytes when the
following occur:
●
The program calls the instruction with the Req input set to TRUE.
●
The connection is not currently busy with another send operation.
The Req input is level-triggered. It is recommended that you put a positive edge trigger on
the Req input so that the instruction does not initiate unintended send operations. The
program ignores the Req input while the TCP_SEND is busy. The Done, Busy, and Error
outputs and the Status output byte show the status of the TCP_SEND for each call.
Содержание SIMATIC S7-200
Страница 30: ...Product overview 1 7 Programming software S7 200 SMART 30 System Manual V2 3 07 2017 A5E03822230 AF ...
Страница 267: ...Program instructions 7 6 Counters S7 200 SMART System Manual V2 3 07 2017 A5E03822230 AF 267 HSC modes 3 and 4 ...
Страница 394: ...Program instructions 7 18 Subroutine S7 200 SMART 394 System Manual V2 3 07 2017 A5E03822230 AF ...
Страница 425: ...Communication 8 5 PROFIBUS S7 200 SMART System Manual V2 3 07 2017 A5E03822230 AF 425 ...
Страница 786: ...Technical specifications A 11 S7 200 SMART cables S7 200 SMART 786 System Manual V2 3 07 2017 A5E03822230 AF ...
Страница 798: ...Error codes C 4 PLC fatal error codes S7 200 SMART 798 System Manual V2 3 07 2017 A5E03822230 AF ...
Страница 848: ...Ordering information F 6 Human Machine Interface devices S7 200 SMART 848 System Manual V2 3 07 2017 A5E03822230 AF ...