Pilz PITreader - 5.2.2 External

Function description
Operating Manual PITreader, PITreader Firmware V1.5.x
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INFORMATION
By employing user data, the number of device groups can be extended to
more than 32. A PITreader can be assigned to device group 0 ... 9999. Per-
missions for device groups 0 ... 31 can be stored on a transponder key as
well as permissions for a maximum of 48 other device groups in the range
32 ... 9999. See User data [ 21].
5.2.2 External
In external authentication mode, a user can authenticate himself on the connected control
system or on the HMI by inserting a transponder key into the read area of the PITreader.
The following connection options are available:
External authentication (Modbus/TCP)
Security ID
Modbus/TCP
PLC
PITreader
Fig.: External authentication (Modbus/TCP)
The PITreader provides the transponder key data via the Modbus/TCP connection.
The permission for the user can be identified using a permission database (on the PLC)
and the data from the transponder key (e.g. the security ID). The authentication is external
(on the PLC).
No authentication takes place within the PITreader and the device LED lights up yellow
when the transponder key is inserted.
To display the externally identified authentication status via the device LED, the colour and
flash mode can be overwritten via the Modbus/TCP interface (see also Modbus/
TCP [ 26]).
INFORMATION
A safe evaluation unit (e.g. PITm4SEU) cannot be used in external authen-
tication mode via Modbus/TCP.