Pilz PIT m3.2p machine tools pictogram - Manual (Page 38)

Function description
Operating Manual PIT m3.2p
1003176­EN­02 38
Flowchart for evaluating the Key ID interface
<ID sync > = 1
AND
<ID response > = 0
Increment Bit Counter
Set <IDrequest> = 0
Read Bit <ID data >
Start Timer
Set <ID request >= 1
Set Bit Counter = 0
Store ID Number
<ID response > = 1
No
<IDresponse> = 0
Time Control
<t
IDend
> >= 200ms
No
Bit Counter = 28
Start
[a]
[b]
[c]
[d]
[e]
Last Bit Control
Data Read and
Acknowledge
Bit Request
Requirement
See Fig. „Timing diagram
of handshake controlled
signal transfer“:
See Fig. „State diagram
of handshake controlled
signal transfer“:
<IDsync> = 0
[g]
No
Yes
No
No
[f]
Fig.: Evaluation of the Key ID number via a control system (principle)