Beckhoff KL6001, Документация

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Product overview
KL6001 11 Version: 3.0.0
2.3 Basic Function Principles
The KL6001 serial interface terminal enables the connection of devices with an RS232C interface (e.g. bar
code scanners). Data can be exchanged with the controller in full duplex mode, independent of the higher-
level bus system. The receive buffer has 128 bytes, the transmit buffer 16 bytes. The data transfer between
terminal and controller is handled via a handshake in the status and control byte. The factory setting of the
terminal is 9600 baud, 8 data bits, 1 stop bit, no parity, RTS/CTS control active.
LED display
The Run LED indicates the operating state of the terminal.
• On – normal operation
• Off – Watchdog timer overflow has occurred. If no process data is transmitted from the Bus Coupler for
100 ms, the green LED goes out.
• The TxD and RxD LEDs indicate the states of the signal lines.
Alternative output format for process data
In the alternative output format, 4 or 5 bytes are mapped in the Bus Coupler (3 bytes for data and 1 or 2
control/status byte(s)). The KL6001 is delivered in the alternative format. The mapping of the terminal in the
alternative format is described in more detail in the chapter Terminal configuration.
Standard output format for process data
In the standard output format, 4 bytes are mapped in the Bus Coupler (3 bytes for user data and 1 control/
status byte). By changing the parameters of the KL6001, up to 5 bytes of user data can be transferred.
Reference
The chapter on "Access from the user program" contains an overview of possible mapping configurations,
depending on the configurable parameters.