Siemens SIMATIC ET 200MP Manual page 11

Requirements
The following requirements apply to a configuration with the IM 155-5 PN ST interface
module:
Table 2- 1 Requirements
PROFINET IO function
Real-time communication
Isochronous real-time
communication
Prioritized startup
Device replacement without
PG
Media redundancy
Shared device
Isochronous mode
The usability of the PROFINET IOfunctions depends on the configuration software (Siemens and/or third party). Below,
1)
the usability of the PROFINET IOfunctions is described for STEP 7only.
Isochronous real-time communication
Synchronized communication protocol for cyclic exchange of IRT data between PROFINET
devices. A reserved bandwidth is available in the send cycle for IRT data. The reserved
bandwidth ensures that IRT data can be transferred at reserved synchronized intervals,
without being influenced by other 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 operating the IO controller as sync master when configuring IRT
communication.
Otherwise, IO devices with IRT and RT configuration could fail as a result of sync master
failure.
You can find additional information on configuration of synchronized PROFINET devices in
sync domains in the STEP 7 online help and
● as of STEP 7 V12, in the PROFINET with STEP 7 V12
● as of STEP 7 V5.5 in the PROFINET System Description
IM 155-5 PN ST interface module (6ES7155-5AA00-0AB0)
Manual, 08/2013, A5E03612323-02
STEP 7 as of V5.5 SP3
X
X
X
X
X
X
-
(http://support.automation.siemens.com/WW/view/en/49948856) function manual.
(http://support.automation.siemens.com/WW/view/en/19292127) manual.
Configuration software
with GSD file
1)
STEP 7 (TIA Portal) as of
V12
X
X
X
X
X
X
-
Product overview
2.2 Functions
STEP 7 (TIA Portal) as of
V12
X
X
X
X
X
-
X
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