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ISO-on-TCP connections all program/event-controlled communication on Ethernet from
SIMATIC S7 to the following systems:
● SIMATIC S7 with an Ethernet CP
● SIMATIC S5 with an Ethernet CP
● PC/PG with an Ethernet CP
● any other suitable system
ISO-on-TCP connection
Type of communications connection over which communication is handled in Industrial
Ethernet according to the TCP/IP (Transmission Control Protocol/Internet Protocol) standard
with RFC1006 (Request For Comment).
Local Area Network (LAN)
Local area network
Logical trigger
A logical trigger is the method used for event-oriented data transmission in → ERPC
communication. Data is read from the CPU of the S7 station containing the CP 343-1 ERPC.
The data read out is sent by the → ERPC application in the CP to one or more → ERP
subscribers.
The basic configuration of the logical trigger is created in the → ILS Workbench.
The triggering of the logical trigger takes place in the user program of the CPU. The relevant
data areas of the CPU and the software blocks required for the logical trigger are configured
in the STEP 7 project.
MAC
Media Access Control
Protocol with which access to a transmission medium (cable, wireless) is controlled if it
cannot be used by all nodes at the same time.
MAC address
Hardware address for the unique identification of a device in an Ethernet network. The MAC
address is assigned by the manufacturer. On some devices it can be modified.
Media Access Control (MAC)
Bus access control: for controlling access by a station to a common transmission medium
shared with other stations
MES
Manufacturing Execution System at the factory management level
CP 343-1 ERPC
Manual, 03/2010, C79000-G8976-C239-02
Glossary
87
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