CM 1542-1
Operating Instructions, 07/2019, C79000-G8976-C355-04
11
Properties and functions
1
1.1
Communication services
The CM supports the following communications services:
●
PROFINET IO
PROFINET IO allows direct access to IO devices over Industrial Ethernet.
–
Real-Time communication (RT)
–
Isochronous Real-Time communication (IRT)
–
Media redundancy MRP
–
Device replacement without exchangeable storage medium
–
IO controller
–
IO device (iDevice, Shared Device, Prioritized startup)
–
Isochronous real time
●
Open User Communication
Open User Communication supports the following communications services via the CM
using programmed or configured communications connections:
–
TCP (complying with RFC 793), ISO-on-TCP (complying with RFC 1006) and UDP
(complying with RFC 768)
With the interface via TCP connections, the CM supports the socket interface to
TCP/IP available on practically every end system.
–
Multicast with UDP
The multicast mode is made possible by selecting a suitable IP address when
configuring connections. A maximum of six multicast groups are supported via UDP.
●
S7 communication
–
PG communication
–
Operator control and monitoring functions (HMI communication)
–
Data exchange over S7 connections
