Siemens SIMATIC NET CP 5621 Betriebsanleitung Seite 23

MPI/DP network
The physical link of the MPI/DP interface to the MPI/DP network is via a floating RS-485
interface that is part of the module. Depending on the network configuration, data
transmission rates of 9.6 Kbps to a maximum of 12 Mbps are possible in the MPI/DP
network.
Note
For information on setting up an MPI network, refer to the manual "S7-300 Installation", order
no. 6ES7030-0AA01-8BA0.
Status LED
The status LED is located on the front panel of the CP 5621. The following table describes
the operating states:
Appearance
off
on
flashing
CP 5621
Operating Instructions (Compact), 02, A5E01156749
Description
Idle, the module is not currently in use.
An application is using the module.
The module has been addressed, for example by the
"Station Configuration Editor" using the "Ring on" function.
Description
7