Position sensors boast 16bit resolution
An
ASM product story
Edited by the Engineeringtalk editorial team
Aug 12, 2005
Position sensor manufacturer ASM has recently expanded its range of industrial interface options with the addition of a synchronous serial (SSI) output with 16bit resolution.
Position sensor manufacturer ASM has recently expanded its range of industrial interface options with the addition of a synchronous serial (SSI) output with 16bit resolution.
ASM's WS position sensors with ADSI interface and 12bit resolution have already proved to be ideal for many applications in the automotive industry as well as in various automation processes.
In order to provide wider application possibilities, this SSI interface has been developed to allow 16bit resolution over the specified length measurement range.
In this case a 10-turn hybrid potentiometer detects the position value; then an analogue/digital convertor puts the detected position value out in the form of a serial data word in SSI format.
The transfer takes place by means of both signals TAKT and DATA.
Using the TAKT signal the receiving electronics (eg PLC) delivers pulse sequences and thus determines the transmission rate.
On the first falling edge of a pulse sequence the encoder latches its data at the current position.
The subsequent rising edges control the bit by bit output of the data word.
A new position value can be then transmitted after an interval time.
This cost-effective implementation of an absolute synchronous-serial interface with high transmission rate, based on a hybrid potentiometer, represents a genuine alternative to solutions with optical or magnetic encoders.
In combination with the compact and robust housing of its WS position sensors, ASM offers a high-quality and low-priced solution for position measurement tasks up to 15,000mm for a wide range of applications.
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