Epson 8900 Series manual Clear to Send Signal, Data Set Ready Signal, Data Carrier Detect Signal

Models: 8900 Series

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Clear to Send Signal

The host computer generates the clear to send (CTS) signal to indicate that it can receive data from the printer. In the DIRECT CONNECT mode, the printer ignores this signal. In the MODEM CONNECT mode, CTS must be on for the printer to send data. If the interface cable does not provide a connection to this pin, the printer holds CTS in its on state.

Data Set Ready Signal

The host activates the data set ready (DSR) signal to enable the printer to send and receive data. If the interface cable does not provide a connection to this pin, the printer holds DSR in its active state.

Data Carrier Detect Signal

The host activates the data carrier detect (DCD) signal to enable the printer to send data when operating in the MODEM CONNECT mode. When the printer is in the DIRECT CONNECT mode, it ignores this signal. If the interface cable does not provide a connection to this pin, the printer holds DCD in its on state.

Data Terminal Ready Signal

If the PIN 20 H:READY (pin 20 high on ready) parameter was selected during printer setup and the printer is operating in the DIRECT CONNECT mode, the printer activates DTR to indicate that it is ready to receive data and deactivates DTR to indicate that it is busy. Otherwise, the printer activates DTR following self-test completion at power-up to indicate that it is online and ready to receive data.

Communication Interfaces 10-17

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Epson 8900 Series Clear to Send Signal, Data Set Ready Signal, Data Carrier Detect Signal, Data Terminal Ready Signal