Siemens SINAMICS S120 Function Manual page 442

Communication PROFIBUS DP/PROFINET IO
10.3 Communications via PROFINET IO
References
For a description of the CBE20 and how you can use it in the drive, please refer to the
manual GH1 "Control Units".
The connection of a SINAMICS S120 with CBE20 to a PROFINET IO network is described in
detail in the System Manual "SIMOTION SCOUT Communication".
Clock generation
The SINAMICS S120 with CBE20 can only act as a sync slave within a PROFINET IO
network.
CBE20 module is plugged in CU320:
● The cyclic DP interface is disabled.
● Transmission type IRT, device is sync slave and isochronous, clock is applied to bus:
● RT or IRT (option "not isochronous") has been configured. The SINAMICS does not use a
No CBE20 module plugged but configured:
● SINAMICS uses local clock (clock configured in SINAMICS), no data exchange via
Telegrams
The following PROFIdrive telegrams can be selected for PROFINET IO communication:
● isochronous standard telegrams 1-6, 20
● Telegram 102-106, 352, 370
● Telegram 999
DCP flashing
This function is used to check the correct assignment to a module and its interfaces. This
function is supported by a SINAMICS S120 from FW 2.4 with plugged CBE20.
1. In HW Config or STEP7 Manager, select the menu item "Target system" > "Ethernet" >
"Edit Ethernet node".
2. The "Edit Ethernet node" dialog box opens.
3. Click on the "Browse" button.
4. The "Browse Network" dialog box opens and displays the connected nodes.
5. After the SINAMICS S120 with CBE20 has been selected as a node, activate the "DCP
flashing" function by means of the "Flash" button.
The DCP flashing will be effective on the RDY LED (READY LED 2Hz, green/orange or
red/orange) on the CPU320.
The LED will continue to flash as long as the dialog is open. When the dialog is closed, the
LED will go out automatically. The function is available as of STEP7 V5.3 SP1 via Ethernet.
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CBE20 synchronizes, providing the clock for the CU320.
local clock (clock configured in SINAMICS).
PROFINET, alarm A1487 "Topology fault" is issued.
Access via PROFINET is not available.
Function Manual, (FH1), 07/2007 Edition, 6SL3097-2AB00-0BP4
Drive Functions