Configuring Isochronous Mode For Distributed I/O On Profibus Dp - Siemens SIMATIC S7-1500 Function Manual

Configuring isochronous mode

5.4 Configuring isochronous mode for distributed I/O on PROFIBUS DP

5.4 Configuring isochronous mode for distributed I/O on PROFIBUS DP
Introduction
The configuring of isochronous mode is described in the following for a DP slave based on
the ET 200S distributed I/O system. The procedure described also applies to other
distributed I/O systems, e.g. for ET 200M.
The IO controller is an S7-1500 CPU.
Requirements
● The network view of STEP 7 is open.
● A CPU has been placed (e.g., CPU 1516-3 PN/DP).
● An interface module which supports isochronous mode has been placed and networked
with the CPU (e.g., IM 151-1 HF).
● I/O modules have been placed (e.g. 2DI x DC24V HF and 2DO x DC24V/0,5A HF).
● Only the constant bus cycle time master is permitted as active station on the isochronous
PROFIBUS DP.
● Assignment of a SYNC/FREEZE group to the DP slave is not permitted.
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Isochronous mode
Function Manual, 10/2018, A5E43884988-AA