User Manual

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.... 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 sig
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