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Operation
6.9 Communication via PROFINET IO
Setting the DHCP address assignment with SINAMICS parameters
The DHCP address assignment can also be initiated using SINAMICS parameters. In this
case, the Control Unit always retrieves the IP address from a DHCP server after each
POWER ON.
1. Activate the DHCP address assignment using one of the following settings (where the
values 2 and 3 mean "MAC address" and "Device name", respectively):
– For Ethernet onboard (X127): p8904 = 2 or 3
– For PROFINET onboard: p8924 = 2 or 3
– For CBE20 (X1400): p8944 = 2 or 3
The DHCP server now temporarily assigns an IP address.
2. You can now activate the interface configuration (value of 1) or activate and save
retentively (value of 2). Make one of the following settings:
– For Ethernet onboard (X127): p8905 = 1 or 2
– For PROFINET onboard: p8925 = 1 or 2 (applies only to SINAMICS S120 devices)
– For CBE20 (X1400): p8945 = 2
6.9.2.5
DCP flashing
This function is used to check the correct assignment to a module and its interfaces. This
function is supported by a CU320-2 DP/PN with inserted CBE20. The function can also be
used without CBE20 in a CU320-2 PN.
Activating DCP flashing:
1. In HW Config or the STEP 7 Manager, select the menu item "Target system > Ethernet >
Edit Ethernet node".
The "Edit Ethernet Node" dialog box opens.
2. Click the "Browse" button.
The "Browse Network" dialog box opens and displays the connected nodes.
3. Select the CU320-2 PN or the CU320-2 DP when a CBE20 is inserted as node.
The "DCP flashing" function is then activated via the "Flash" button.
The DCP flashing is switched to the RDY LED (READY LED 2 Hz, green/orange or
red/orange) on the CU320-2 DP.
The LED will continue to flash as long as the dialog is open. When the dialog box is closed,
the LED automatically goes dark.
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Direct activation is not possible for the CBE20. The configuration can only be saved.
The setting then becomes automatically active for the next POWER ON.
Operating Instructions, 12/2018, A5E36652151A
Enclosed Drives
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