Siemens SINAMICS DCM Operating Instructions Manual page 388

Descriptions of functions
10.4 Communication via SINAMICS Link
● Using p8836, assign node numbers to the nodes (the first CU is always assigned the
● On the CU, set parameter p0009 to 0 (unit configuration).
● Save the changes saved in the RAM in a non-volatile fashion.
● Perform a Power ON (switch-off/switch-on).
Sending data
Proceed as follows to send data:
● In parameter p2051[x], for each drive object, define which data (PZDs) should be sent.
● In parameter p8871, for each drive object, assign the send parameter to the send slot of
Receiving data
Proceed as follows to receive data:
Note
The first word of the receive data must be a control word, where bit 10 is set. If this is not the
case, then you must deactivate the evaluation of bit 10 using p2037 = 2.
● Received data are saved in parameter r2050[x]/r2060[x].
● The address of the node from which the relevant PZD is to be read is defined in
● In parameter p8870[0 ... 15], the PZD is defined which is read from the sent telegram and
Note
For double words, 2 PZD must be read; e.g.: Read in a 32-bit setpoint, which is located
on PZD 2+3 for node 5 and map this to PZD 2+3 of its own node: p8872[1] = 5, p8870[1]
= 2, p8872[2] = 5, p8870[2] = 3
Activation
To activate SINAMICS Link connections, perform a POWER ON for all nodes. The
assignments of p2051[x]/2061[x] and the links of the read parameters r2050[x]/2060[x] can
be changed without a POWER ON.
386
number 1). Observe the specifications under "Topology". Node number 0 means that
SINAMICS Link is shut down.
p2061[x] must be used for double word quantities.
its own node. Double words (e.g. 2+3) are assigned two consecutive send slots, e.g.
p8871[1] = 2 and p8871[2] = 3.
parameter p8872[0 ... 15] (0 ≙ nothing is read in).
is to be stored in its own receive slot, r2050 for PZD or r2060 for double PZD (0 ≙ no PZD
selected).
Operating Instructions, 1.2012, C98130-A7066-A1-05-7619
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