Communication Program Simatic S5 - Siemens SIMATIC S5 Manual

2 Engineering
Description of the blocks
Table 2-17
Block
OB 100
OB 1
FB 4
DB 19
DB 16
DB 17
OB 100 (startup OB)
OB 1 (cyclic OB)
FB 4 (TSEND/TRCV management)
All these blocks of the program are structured identically to scenario 2a.
2.6.3

Communication program SIMATIC S5

Overview
The following blocks contain the communication program of the S5-CPU. In this
scenario, the S5 sends and receives data via a passive ISO-on-TCP connection.
The connection is established from the S7-1500.
OB 21
Startup
OB 22
Startup
OB 1
Main
Ethernet Communication (ISO on TCP) between SIMATIC S5 and
SIMATIC S7-1500 Controllers
Entry-ID: 109482475, V1.2,
Symbol
Startup
Main
ConnManagerParamID104
InstConnManagerParamID104
InstTSENDParamID104
InstTRCVID104
FB30
SEND_ALL
User
blocks
07/2019
Startup OB
Cyclic OB
Management of connection ID
104
Instance DB of FB 4
(send/receive data area)
Instance DB TSEND ID 104
Instance DB TRCV ID 104
HTB
SYNCHRON
HTB SEND
SEND_DB
HTB RECV
HTB
HTB
RECV_ALL
Handling Data blocks
blocks
Description
RECV_DB
61