Technical data

Connection of the SINAMICS S120 to the Technology CPU
Product Information, 09/2011, A5E00480378-04
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Basic functions
4
4.1 Encoder settings
4.1.1 Encoder configuration (overview)
Principle
The supported encoder types depend on the device. You will find more detailed information
in the supplementary descriptions, or in the manuals for the SINAMICS S120 and the drives.
The encoder is configured in S7T Config in two stages:
1. Set the encoder type when you configure the drive.
2. Set selected dependent encoder parameters, such as number of data bits,
resolution etc. when you configure the axis.
4.1.2 Characteristic values for encoders
Encoder actual values
In the message frame between the drive and PLC, two encoder actual values are used to
transmit the encoder position - the "cyclical actual value" Gn_XIST_1
(n = 1 or 2, number of the encoder), and the "absolute actual value" Gn_XIST_2
(n = 1 or 2, number of the encoder).