
Printer Interface Technical Information
Printer Interface Technical Information
Serial Data Communications
Hardware Control Signal Descriptions
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When DTR/DSR handshaking is selected, the Data Terminal Ready (DTR) control signal output from the printer controls when the host computer may send data. DTR ACTIVE (positive voltage) permits the host to send data. When the printer places DTR in the INACTIVE (negative voltage) state, the host must not send data.
Note • When XON/XOFF handshaking is selected, data flow is controlled by the ASCII Control Codes DC1 (XON) and DC3 (XOFF). The DTR Control lead has no effect.
Request to send (RTS) is a control signal from the printer that is connected to the clear to send (CTS) input at the host computer. RTS is always active (positive voltage) when the printer is on.
Cable Specifications
RS-232 Serial Data Port
The connection for this standard interface is made through the female
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124 | Z4Mplus and Z6Mplus User Guide |