Pilz PIT m3.2p machine tools pictogram - Manual (Page 30)

Function description
Operating Manual PIT m3.2p
1003176­EN­02 30
4.3.2 Communication mode for downloading the Key ID number
The unique Key ID number for the relevant transponder key is downloaded to the higher­
level process control system using a defined protocol, depending on the configured com­
munication mode. The communication mode is configured on the Key ID interface of the
operating mode selector switch (jumpers available/not available).
The operating mode selector switch detects the configured communication mode at each
power­on. As long as voltage is applied to the operating mode selector switch, the con­
figured communication mode will be active; the change in communication mode does not
come into effect until the supply voltage is switched off and then on again.
It’s possible to choose between the following communication modes:
} Transmitter­controlled communication mode
} Handshake­controlled communication mode
4.3.2.1 Transmitter­controlled communication mode
With transmitter­controlled communication mode, the download of the Key ID number is
started by the operating mode selector switch (= transmitter).
Features of this communication mode:
} Download of Key ID number starts once the transponder key is connected
} Constant bit rate (100 ms)
} Download on 2 data lines
} Constant download time (typ. 1.8 s)
} Monitored data download
} Input/outputs required on the control system: 4 inputs and 2 outputs
} Download is repeated by reconnecting the transponder key
No special coding is required on the Key ID interface in order to download the Key ID num­
ber of a transponder key to the control system in transmitter­controlled communication
mode. The terminals on the Key ID interface are used as follows:
Key ID interface
Brief description of applic­
ation
Coding via jumpers
IDo0 IDsync No configuration required
IDo1 IDclock
IDo2 IDout0
IDo3 IDout1
IDi0 IDin0
IDi1 IDin1