Siemens SINAMICS DCM Manual page 494

7. Define the receive data (CU320-2):
– Define that the receive buffer 0 should be filled with data from SINAMICS DCM:
– Define that PZD1 of SINAMICS DCM should be saved in this buffer:
8. Carry out a RAM to ROM and then a power cycle at all components to activate the
SINAMICS Link connections.
10.6.5 Communication failure during power-up or in cyclic operation
If at least one sender does not correctly boot after commissioning or fails in cyclic operation,
then alarm A50005 is output to the other nodes: "Sender was not found on the SINAMICS
Link."
The message contains the number of the faulted node. After you have resolved the fault at
the node involved and the system has identified the node, the system automatically
withdraws the alarm.
If several nodes are involved, the message occurs a multiple number of times consecutively
with different node numbers. After you have resolved all of the faults, the system
automatically withdraws the alarm.
When a node fails in cyclic operation, in addition to alarm A50005, fault F08501 is output:
"COMM BOARD: Monitoring time, process data expired"
10.6.6 Example: Transmission times for SINAMICS Link
Transmission times at a communication cycle of 1 ms
p2048/p8848 = 1 ms
Bus cycle
SINAMICS DCM DC Converter
Operating Instructions, 02.2015, A5E34763375/RS-AA/001
DO1 p8872.0 = 1
DO1 p8872.1 = 1
DO1 p8872.2 = 1
DO1 p8872.3 = 1
DO1 p8870.0 = 1
DO1 p8870.1 = 2
DO1 p8870.2 = 3
DO1 p8870.3 = 4
Sync both
0.5 1.0
1.0 1.5
2.0 3.0
ac.maher.co.ir
10.6 Communication via SINAMICS Link
Transmission time
Sync send Sync receive
1.5 1.3
2.1 2.1
3.6 3.1
Descriptions of functions
Async both
1.6
2.2
2.8
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