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Festo Кабели и принадлежности User Manual

Page 205

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5. Controlling the SPC200

5−19

Festo P.BE−SPC200−EN en 0901d

In the operating mode Record Select positioning tasks are
sent in the form of binary−coded NC record numbers to the
SPC200 via the inputs RECBIT...Ă. With a rising edge at the
CLK input, the record numbers are accepted for the relevant
program and acknowledged with the ACK signal.

The following diagram shows the signal curve of the I/O sigĆ
nals relevant for communication when a positioning task is
delegated.

0

1

0

1

0

1

0

1

RECBIT...

CLK_A/B

ACK_A/B

RC_A/B

1

2

3

4

1

Debounce time t

≥ 10 ms

2

The status of the individual input signals depends on the desired record
number

3

Positioning procedure

4

As from this moment the PLC/IPC waits for the 1−signal at the RC_A/B output

Fig. 5/8:

Time behaviour of the I/O signals in Record Select mode