Siemens Simatic S7-300 - Position Decoder Module SM 338; POS-INPUT; (6 ES7338-4 BC01-0 AB0)

Other signal modules
7.4 Position decoder module SM 338; POS-INPUT; (6ES7338-4BC01-0AB0)
S7-300 Automation System Module data
Manual, 08/2006, A5E00105505-04
7-7
7.4 7.4 Position decoder module SM 338; POS-INPUT;
(6ES7338-4BC01-0AB0)
Order number
6ES7338-4BC01-0AB0
Properties
Properties of position decoder module SM 338; POS-INPUT:
● 3 inputs for the connection of up to three absolute value encoders (SSI), and 2 digital
inputs to freeze encoder values
● Allows direct reaction to encoder values in motion systems
● Processing of encoder values recorded by SM 338 in the user program
● Isochronous mode supported
● Selectable encoder value acquisition mode:
– cyclic
– isochronous
● Rated input voltage 24 VDC
● Nonisolated to the CPU
● Fast Mode selectable; with faster transducer action and compressed feedback interface.
The Fast Mode is available from firmware version V2.0.0 in SM 338; POS-INPUT and can
be selected from STEP 7 V5.3+SP2.
Supported encoder types
Encoder types supported by SM 338; POS-INPUT:
● Absolute value encoder (SSI), frame length 13 bit
● Absolute value encoder (SSI), frame length 21 bit
● Absolute value encoder (SSI), frame length 25 bit
Supported data formats
SM 338; POS-INPUT supports gray code and binary code.