Oki ML591 MICROLINE Reference Manual - Page 170

Most Significant Bit Commands (Epson) ߜ ML320 E/I, ML321 E/I ߜ ML320 Turbo, ML321Turbo ߜ ML390 Turbo, ML391Turbo ߜ ML520, ML521 ߜ ML590, ML591 Function Set Most Significant Bit (MSB) to Zero Set MSB to 1 Cancel MSB Control ASCII ESC = ESC > ESC # Dec 27 61 27 62 27 35 Hex 1B 3D 1B 3E 1B 23 The ESC = command sets the most significant bit (MSB) of an 8-bit data input to zero. The ESC > command sets the MSB to one. The ESC # command cancels the MSB control established by either command and all data is interpreted exactly as sent from the computer. Paper-Out Sensor Commands (IBM/E/ML) ߜ ML320 E/I, ML321 E/I ߜ ML320 Std., ML321 Std. ߜ ML320 Turbo, ML321Turbo ߜ ML390 Turbo, ML391Turbo ߜ ML520, ML521 ߜ ML590, ML591 Function Paper-Out Sensor On Paper-Out Sensor Off IBM ASCII: ESC 9 Dec: 27 57 Hex: 1B 39 ASCII: ESC 8 Dec: 27 56 Hex: 1B 38 Epson ASCII: ESC 9 Dec: 27 57 Hex: 1B 39 ASCII: ESC 8 Dec: 27 56 Hex: 1B 38 ML ASCII: ESC E 0 Dec: 27 69 48 Hex: 1B 45 30 ASCII: ESC E 1 Dec: 27 69 49 Hex: 1B 45 31 The paper-out sensor detects when less than one inch of paper remains (0.5-inch for ML390/391T printers). When this happens, the alarm light goes on and the printer is deselected. This command overrides the sensor so that you can print closer to the bottom of the page. (The feature is also menu selectable.) Be careful if you use this feature, since it lets the printer continue printing when there's no more paper. This can cause loss of data and may damage the printhead. 128 Chapter 12: Miscellaneous Commands