Using A Freely Configurable Telegram - Siemens SINAMICS G120 Manual

5 Drive Configuration
Figure 5-13 Save RAM to ROM and Upload to PC
14. Power Cycle the G120; the Control Unit must be powered off to set the
communication protocol to EtherNet/IP. Wait sufficient time that the Control Unit
powers down. The CU will be ready for EtherNet/IP communication when power is
restored.
5.2

Using a Freely Configurable Telegram

Selectable Telegrams such as T352 offer easy parameter mapping for drive
control. Binectors or Connectors terminated by the telegram can be changed if the
telegram is changed to "Free Telegram" (P922 = 999).
It is possible to configure a custom telegram to fit a specific application
requirement. The custom configuration can be accomplished using one the
methods listed.
1. Using a standard telegram as a template and changing the configuration
manually.
2. Selecting the input and output data length and connecting the telegram words
in the communications window of the drive configuration.
3. Configuration by Script execution. A script can be written in Starter that
configures the telegram size and connections required. The script is then
executed in Starter, configuring the drive.
Parameter r2067 displays the number of PZDs the controller detected to be part of
the telegram. The Input and Output data length must match the values in r2067 of
the drive. For example, if telegram T352 was used as a basis for a free Telegram, it
would have 4 User Defined Words to the drive from the PLC. If these words are not
used for connections such as Added Speed Setpoint, Torque Setpoint, or Torque
Limits, then they must be terminated to unused Connector Input Parameters.
Figure 5-14
SINAMICS G: Control of a G120 with an Allen-Bradley controller
(Compact/ ControlLogix with RSLogix 5000) via EtherNet/IP
Entry-ID: 82843076, V4.0, 09/2018
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