Our application requires the position measurement of an object. Pls tell me how to program for hooking up an absolute encoder with an S7-226 Siemens PLC. Does it require conversions or direct 1:1 connections like an incremental encoder like using High Speed Counters? Do all absolute encoders require gray code conversions? We are planning to go for Omron E6C2-AG5C model of absolute enc.

 

Hi,

I've done this many times, not using that particular encoder, but usually a Hengstler. I just tried to check the model you mention on the Omron site - it's down at the moment. (Where are the simple sites of long ago?) You can code and decode once you have the data coming in, remember that you may need additional components on some interfaces. Just bring the data bits in on inputs, for example I0.0 to I0.7 and then read that byte as IB0

Marc Sinclair
http://www.germainesystems.eu