Siemens High Speed Counter and Encoder Module SIMATIC 505 Manuale Utente Scaricare il pdf (Pagina 16)

Overview

1-10

Series

505 High Speed Counter

and Encoder Module User

’

s Manual

Counting Modes (continued)

1.5.5

Quadratur

If input A leads input B, the module counts up on rising and falling edges

of both input A and input B. If input B leads input A, the module counts

down on the rising and falling edges of input A and input B.

Figure 1-7 shows the relationship between inputs A and B and the count

value in the 4X

quadrature mode.

4X Quadrature

12 34 5 6 7 8 7 65 4 32 10

25 s

min

Counts Up

(A Leading)

Count V

alue

Counts Down

(B Leading)

26.7

s

min

Figure 1-7

Quadrature Mode

1 2 ... 11 12 13 14 15 16 17 18 19 20 21 ... 52 53

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Siemens High Speed Counter and Encoder Module SIMATIC 505 Manuale Utente Pagina 16