Function description
Operating Manual PITreader, PITreader Firmware V1.5.x
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5.7 Block list
You can lock the authentication of certain transponder keys. Once a transponder key is in
the block list, it can no longer be authenticated on the PITreader. This function can be use-
ful, for example, when a user has lost his transponder key. It can stop unauthorised per-
sons authenticating themselves on the PITreader.
The block list can be used in any authentication mode.
See also Use block list [ 41].
5.8 Real-time clock and operating hours counter
The PITreader has a real-time clock and an operating hours counter.
The real-time clock can be set to a new data/time value in the web application.
Synchronisation with an SNTP Server can be activated in the web application. If an SNTP
Server has been configured, the very first synchronisation with the configured SNTP Server
will occur after 10 seconds. Subsequently, synchronisation with the SNTP Server will be
carried out in the time configured by the user.
5.9 Modbus/TCP
A Modbus/TCP connection to a controller (PLC, HMI) can be established via the Ethernet
interface. Up to 4 Modbus/TCP connections are supported. The PITreader is always the
connection Server (Modbus/TCP Slave).
The port number for data exchange via Modbus/TCP is configurable; the standard port
number is 502.
The Modbus/TCP Server function can be deactivated in the web application.
5.9.1 LED control
The LED's colour and flash mode can be overwritten via the Modbus/TCP connection.
The LED colour can adopt one of the following values:
} 0 = switched off (default setting)
} 1 = blue
} 2 = yellow
} 3 = red
} 4 = green
The flash mode can adopt one of the following values:
} 0 = lit continuously (default setting)
} 1 = flashes slowly (1 Hz)
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