Parametrization Sm 338 Pos-Input - Siemens SIMATIC Manual

7.4.4

Parametrization SM 338 POS-INPUT

You parameterize the SM 338; POS-INPUT in
while the CPU is in STOP mode.
After you completed the parameter assignment, download the parameters from the PG to the
CPU. At its next STOP → RUN transition, the CPU transfers the parameters to the SM 338.
New parameters can not be assigned by the user program.
Parameters of SM 338; POS-INPUT
The table below provides an overview of configurable parameters and defaults for the SM
338.
The defaults apply if you have not set any parameters in
Table 7- 3 Parameters of SM 338; POS-INPUT
Parameters
Enable
•
Fast-Mode
Enable
•
Diagnostic interrupt
Absolute value encoder (SSI)
1)
1)
Code type
1.3)
Baud rate
S7-300 Module data
Manual, 06/2017, A5E00105505-AJ
7.4 Position decoder module SM 338; POS-INPUT; (6ES7338-4BC01-0AB0)
Range of values
yes / no
yes / no
none; 13 bits; 21 bits; 25 bits
Gray; Binary
125 kHz; 250 kHz; 500 kHz; 1 MHz
STEP 7 . Always parameterize the module
STEP 7
(default setting bold).
Note
Enable parameter.
Applies to all 3 channels.
Enable parameter.
Applies to all 3 channels.
none: The encoder input is switched off.
Code returned by the encoder.
Data transfer rate of the SSI position detection.
Observe the relationship between cable lengths
and the transmission rate (refer to chapter
"Technical data of SM 338; POS-INPUT
(Page 512)")
Other signal modules
505