Electro-cam PS-4456 Absolute Gray Code Encoder Manuel d'utilisateur Page 1

PLµS Controls Div.PS — 4256 / 4456ABSOLUTE GRAY CODE ENCODERPS-4456/4457 (NEMA 4X)PS-4256/4257 (NEMA 12)FeaturesGeneral InformationApplicationsSinking

When wiring an encoder to the PLC, the most important thing toremember is which output is the MSB (Most Significant Bit) andwhich is the LSB (Least Si

Use a limit test function to program a pulse in the PLC. The limit test uses a test reference (in this case the integerregister that the Gray Code is

Gray Code — Error Free DecodingThe Gray Code chart below (Figure 2) shows the bit pat-terns that are used to represent all 256 encoder positions.It ca

DimensionsNEMA 12NEMA 4X5Figure 4Figure 5WiringFigure 3

Specifications6† See page 7 for sinking/sourcing definitionsThe 8 Bit Gray Code Encoder Output Chart (Figure 6) shows the transitions of each of the 8

†SINKING or SOURCING (as pertaining to Electro Cam Corp. products)Sinking means that when the logic is true and the output (or input device) is ON, th

201 07/0013647 Metric Rd • Roscoe, IL 61073 USA • Web Site: http://www.electrocam.com • email: [email protected] Cam Corp. is highly experien