Siemens SIMATIC S7-1500 System Manual page 383

PROFINET
PROcess FIeld NETwork, open Industrial Ethernet standard that continues PROFIBUS and
Industrial Ethernet. A cross-manufacturer communication, automation, and engineering
model defined by PROFIBUS International e.V. as an automation standard.
PROFINET IO
Communication concept for the realization of modular, distributed applications within the
scope of PROFINET.
PROFINET IO controller
Device used to address connected IO devices (for example distributed I/O systems). The IO
controller exchanges input and output signals with assigned IO devices. The IO controller is
often the CPU on which the user program is running.
PROFINET IO device
Distributed field device that can be assigned to one or more IO controllers. Examples:
Distributed I/O system, valve terminals, frequency converters, switches
PROFIsafe
Safety-oriented PROFINET IO bus profile for communication between the → safety program
and the F-I/O module in a fail-safe system.
Push-in terminal
Terminal for the tool-free connection of wires.
Redundancy connection/redundancy connections
The redundancy connection in an S7-1500R system is the PROFINET ring with MRP. The
redundancy connection uses part of the bandwidth on the PROFINET cable for the
synchronization of the CPUs. This bandwidth is therefore not available for PROFINET IO
communication.
Unlike in S7-1500R, the PROFINET ring and redundancy connections in S7-1500H are
separate. The two redundancy connections are fiber-optic cables that connect the CPUs
directly over synchronization modules. The bandwidth on the PROFINET cable is available for
PROFINET IO communication.
Redundancy ID
The load memory of both CPUs contains the project data of one as well as the other CPU. By
assigning the redundancy IDs, you define which project data a CPU uses for itself.
Redundant systems
Redundant systems have multiple (redundant) instances of key automation components.
Process control is maintained if a redundant component fails.
S7-1500R/H redundant system
System Manual, 11/2022, A5E41814787-AD
Glossary
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