Media Redundancy (Mrp); Prioritized Startup - Siemens CP 1626 Operating Instructions Manual

Operating hardware

4.5 Media redundancy (MRP)

4.5 Media redundancy (MRP)
Product-specific notes
This section describes specific information for the CP 1626 on the topic of "media
redundancy". You will find a detailed description of "media redundancy" in the document
"PROFINET with STEP 7 V14
(https://support.industry.siemens.com/cs/ww/en/view/49948856)" in the section "Media
redundancy".
Version
In the CP 1626, the "MRP" method is used that conforms to the Media Redundancy Protocol
(MRP) specified in the standard IEC 62439-2 Edition 1.0.
Ring ports
The MRP procedure is available at the ring ports 1 and 2 of the X1 interface.
4.6

Prioritized startup

Definition
An PROFINET IO device with the "prioritized startup" property can reach the data transfer
phase extremely quickly after it is powered up.
Example
An industrial robot works with a tool whose actuators are controlled via IO devices. It has
other tools stored in its magazine.
When the industrial robot changes tools, the "prioritized startup" property of the IO device is
important. The faster the IO device is available for data transfer after turning on the power,
the faster the robot can continue working.
How do I configure prioritized startup?
The "prioritized startup" property is taken into account in the configuration of the IO
subsystem with the "STEP 7 Professional (TIA Portal)" program.
You will find more information on this topic in the "Commissioning PC Stations" configuration
manual.
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Operating Instructions, 11/2018, C79000-G8976-C434-03
CP 1626