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Technical Manual TNC 360 - heidenhain - DR. JOHANNES ...

Technical Manual TNC 360 - heidenhain - DR. JOHANNES ...

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Control/signal lines:<br />

DCD (Data Carrier Detect): Received signal level. The DCD signal indicates<br />

to the transmitter that the information received<br />

at the receiver lies within the defined level.<br />

The DCD signal (pin 8) is not used by the <strong>TNC</strong>,<br />

i.e. the <strong>TNC</strong> delivers no signal from pin 8.<br />

DTR (Data Terminal Ready): This signal shows that the <strong>TNC</strong> is ready for service<br />

(e.g. receiving buffer full => DTR = Low).<br />

DSR (Data Set Ready): Peripheral ready for service.<br />

RTS (Request to Send): Hardware handshake:<br />

Output of the receiving unit<br />

CTS (Clear to Send): Hardware handshake:<br />

Output of the transmitting unit<br />

Earth conductor (cables for power supply):<br />

Chassis GND: Casing connection<br />

Signal GND: 0-Volt lines for all signals<br />

Chassis GND<br />

Transmitted data TxD<br />

Received data RxD<br />

Switch on transmission unit RTS<br />

Transmission readiness CTS<br />

Operational readiness DSR<br />

Received signal level DCD<br />

Terminal unit ready for service DTR<br />

Signal ground GND<br />

Peripheral <strong>TNC</strong><br />

8-12 <strong>TNC</strong> <strong>360</strong> 2 <strong>TNC</strong> data interfaces 8/95

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