Characteristics Of S7 Communication; Characteristic Data Of The Send/Receive Interface - Siemens CP 343-1 Lean Manual

Performance data

2.3 Characteristics of S7 communication

● Further TCP connections for Web diagnostics
● PROFINET IO
2.3 Characteristics of S7 communication
Number of connections
Table 2- 2 Number of connections for S7 communication
Characteristic
Number of connections for S7 communication via
Industrial Ethernet for:
Operator control and monitoring functions

(HMI)
S7 connections configured at one end

LAN Interface - data record length per protocol unit
sending

receiving

2.4

Characteristic data of the SEND/RECEIVE Interface

The SEND/RECEIVE interface provides access to communication over TCP, ISOonTCP and
UDP connections.
The following characteristics are important:
16
– As PROFINET IO device:
1 PROFINET connection to a PROFINET IO controller
or
– As shared device:
2 PROFINET connections to 2 PROFINET IO controllers
Explanation / values
Maximum 4 (one-ended connections)
The number depends on the CPU type being used; the valid values
can be found in /1/ (Page 60).
240 bytes / PDU

240 bytes / PDU

Manual, 10/2012, C79000−G8976−C198−07
CP 343-1 Lean