PROFINET Communication
‑101‑
The MD500‑PN1 card can be replaced directly when the slave node is faulty (only
when the MD500‑PN1 card is faulty) without device configuration again.
The prerequisites for directly replacing the MD500‑PN1 card are as follows:
● The alternative component and the component to be replaced are both the
MD500‑PN1 cards.
● The alternative MD500‑PN1 card has not been assigned with a device name before.
● The topology has been configured during PLC network configuration.
● The Support device replacement without exchangeable medium option is
selected during PLC configuration.
To directly replace the MD500‑PN1 card, the corresponding configuration is required.
The configuration varies in STEP 7 and PORTAL.
Selecting the Support device replacement without exchangeable medium Option
and Setting Topology in PORTAL
Open PORTAL, and select the PROFINET interface of the master in the hardware
configuration. Choose Properties > General, choose Advanced options > Interface
options, and select Support device replacement without exchangeable medium,
as shown in the following figure.
For the S7‑1200 or S7‑1500 PLC, the sub‑option Permit overwriting of device names
of all assigned IO devices is available. If this sub‑option is selected, the second
prerequisite for directly replacing the MD500‑PN1 card is not required.
Then, switch to Topology view, as shown in the following figure.
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