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Product overview

2.3 Functions

Requirements

The following table shows the software requirements for the use of PROFINET IO functions

with the IM 157-1 PN interface module.

Table 2- 1

Real-time communication

Isochronous real-time commu-

nication

Device replacement without

programming device

Media redundancy

Shared device

Use a S7-1500 CPU as a controller to use a shared device with STEP 7 (TIA Portal).

Systems of third-party manufacturers: Depending on the range of functions of the third-party sys-

tem

Real-time communication

A transmission method for PROFINET IO based on a cyclic data exchange with a provider-

consumer model.

Isochronous real-time communication

Synchronized transmission method for cyclic exchange of IRT data between PROFINET

devices. A reserved bandwidth within the send clock is available for IRT data. The reserved

bandwidth ensures that IRT data can be transferred at reserved synchronized intervals,

without being influenced by other higher network loads (e.g., TCP/IP communication, or

additional real-time communication).

A topological configuration is required for IRT.

Note

IO controller as sync master with IRT communication

We recommend that you also operate the IO controller as a sync master when configuring

IRT communication.

Otherwise IRT and RT configured IO devices may fail if the sync master fails.

Software requirements for PROFINET IO functions

PROFINET IO function

Configuration software

STEP 7 (TIA Portal) V13 or

higher

(with GSD file)

Interface module IM 157-1 PN (6ES7157-1AB00-0AB0)

STEP 7 V5.5 SP4 or higher

(with GSD file)/Software from

third-party manufacturer

Manual, 12/2016, A5E32347036-AD