Siemens S7-300 - Machine Data of the Encoder

Machine and cam data
9.10 Machine data of the encoder
FM 352 electronic cam controller
86 Operating Instructions, 05/2011, A5E01071724-03
9.10 Machine data of the encoder
Definition
The encoder returns position data to the module for evaluation and conversion to an actual
value based on the resolution.
The correct definition of the encoder's machine data is essential for ensuring consistency
between the calculated and physical actual position of the axis.
Data in the parameter DB:
Encoder type and frame length
Address Name Type Initial value Comment
20.0 ENC_TYPE DINT L#1 Encoder type and frame length
Range of values:
1 = 5 V, incremental
2 = 24 V, incremental
3 = SSI 13-bit frame length
4 = SSI 25-bit frame length
5 = listen in
6 = 24 V initiator positive direction
7 = 24 V initiator negative direction
8 = SSI 13-bit (right-justified)
9 = SSI 25-bit (right-justified)
10 = listen in (right-justified)
At the "frame length" you define the clock frame output by FM 352. The "listen in" selection disables
the clock pulse of FM 352. The FM 352 can then listen in on other SSI frames with a 13 or 25-bit
frame length. The transmission rate is determined by the cycle clock rate of the master module.