Setting the KP8 and KP8F
6.4 Configuring Media Redundancy Protocol
KP8, KP8F
Operating Instructions, 10/2010, A5E03284305-01
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6.
Change the entries, if required.
7.
Click "OK".
The entries are saved. The dialog box closes.
Result
The HMI device will now respond in operation according to the new setting. The switch
states of the digital inputs/outputs of the HMI device are stored in the specified address area
of the controller.
6.4
Configuring Media Redundancy Protocol
KP8 and KP8F are designed for MRP.
MRP allows compensation for individual failures in a simple ring topology. Meshed topology
is not supported, MRP is deterministic.
MRP is based on a ring topology and guarantees recovery times between 200 ms and
500 ms. MRP uses a redundancy manager that closes the ring. In normal mode, the
redundancy manager checks the continuity of the ring through test packets.
NOTICE
Response time
If the response monitoring time is less than the response time of the MRP, then MRP will
not work with the KP8F. The controller will see the HMI device as "failed" in the short-term.
The response monitoring time must be greater than the response time of the MRP. Refer to
chapter "Response times of the PROFIsafe devices (Page 78) ".
Requirement
● "HW Config" is open in the SIMATIC Manager.
In the following image, the module to be configured is labeled in red.
The following procedure is an example and also applies for the KP8F.
