Rockwell-automation 1734-VHSC24 Very High-Speed Counter Modules User M Instrukcja Użytkownika Pobierz pdf (Strona 14)

Publication 1734-UM003B-EN-P - August 2005

1-4 About the Modules

Absolute encoders typically have higher speed requirements (200 KHz

typical) for motion control applications. An absolute encoder has a

unique code associated with each position, so the exact position is

always known, even if the system power is turned off.

EXAMPLE

Example of Multiplying Encoder Mode X1, X2 and X4

X1 Multiplying Encoder Mode

Quadrature input signals are used to count on the leading (up

direction) or trailing (down direction) edge of A for a bidirectional

count, and channel B is used to determine the direction.

[ B = leads A, Count = Down; B = follows A, Count = Up ]

X2 Multiplying Encoder Mode

Quadrature input signals are used to count on leading and trailing

edges of A for a bidirectional count, and channel B is used to

determine the direction.

[ B = leads A, Count = Down; B = follows A, Count = Up ]

Quadrature Encoder

1734-VHSC

Input A

Input B

123

135246

1352467 10981211

Input

1 Count

Count

4 Count

210

531420

11 9 710 8 6 5 23401

Forward Rotation Reverse Rotation

Input Z

Outputs

Updated

Continuously

Z (Store Count)

(Gate / Reset )

1 2 ... 9 10 11 12 13 14 15 16 17 18 19 ... 73 74

Brak uwag

Rockwell-automation 1734-VHSC24 Very High-Speed Counter Modules User M Instrukcja Użytkownika Strona 14