Example - Siemens SINAMICS S120 Function Manual

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Communication

10.4 Communication via SINAMICS Link

For double words, two PZD must be read in succession. Read a 32-bit setpoint that is at

PZD 2+PZD 3 of the telegram from node 2, and map this to PZD 2+PZD 3 of node 1:

p8872[1] = 2, p8870[1] = 2, p8872[2] = 2, p8870[2] = 3

To activate SINAMICS Link connections, perform a POWER ON for all nodes. The

assignments of p2051[x]/2061[2x] and the links of the read parameters r2050[x]/2060[2x]

can be changed without a POWER ON.

Example

Configure SINAMICS Link for two nodes and transfer the following values:

● Send data from node 1 to node 2

● Send data from node 2 to node 1

1. For all nodes, set p0009 = 1 to change the device configuration.

2. For all nodes, for the CBE20, set the SINAMICS Link mode:

3. Assign the node numbers for the devices involved:

4. For both nodes p0009 = 0, carry out "Copy RAM to ROM" followed by a POWER ON.

5. Set all CBE20 to the isochronous mode by setting p8812[0] = 1.

6. Limit the maximum number of nodes with p8811 = 16.

7. For both nodes p0009 = 0, carry out a "Copy RAM to ROM" followed by a POWER ON in

– r0898 CO/BO: Control word, sequence control, drive 1 (1 PZD), in the example PZD 1

– r0079 CO: Total torque setpoint (2 PZD), in the example PZD 2

– r0021 CO: Smoothed actual speed (2 PZD), in the example PZD 3

– r0899 CO/BO: Status word, sequence control, drive 2 (1 PZD), in the example PZD 1

– Node 1: p8836 = 1 and

– Node 2: p8836 = 2

order to activate the modified firmware versions and the new settings in the CBE20.

Function Manual, (FH1), 01/2013, 6SL3097-4AB00-0BP3

Drive functions