User manual CITIZEN CBM-810

[. . . ] Follow all warnings and instructions marked on the product. Unplug this product from the wall outlet before cleaning. Do not place this product on an unstable cart, stand or table. The product may fall, causing serious damage to the product. [. . . ] New data should be input when this signal is "LOW". (Positive logic) : When your printer is in an alarm state, this signal is "LOW". At this time, all control circuits of your printer are interrupted. (Negative logic) : When the paper is near its end, this signal is issued. (Positive logic) Note: An alarm condition occurs when the timing of the print head movement sensor is abnormal. c) Power Source *+5V DC : The same +5V output as that of the power source which actuates the control circuits. : Equivalent to "case ground". *GND *FRAME GND 22 CITIZEN CBM-810/720/730/750 User's Manual (2) Electrical Characteristics a) Input Signal Level All input signals are TTL level. "HIGH" level . . . . . . . . . . . . . . . . . . "LOW" level . . . . . . . . . . . . . . . . . . . . b) Output Signal Level "HIGH" level . . . . . . . . . . . . . . . . . . . "LOW" level . . . . . . . . . . . . . . . . . . . . c) Input/Output Conditions All of the input signals are pulled up by 1K ohms. All of the output signals are pulled up by 3. 3K ohms. 23 CITIZEN CBM-810/720/730/750 User's Manual (3) Timing Chart a) Data Input and Print Timing (4) Data Receiving Control Your printer is able to receive data sent from the host side when the BUSY signal is LOW, but unable to receive when the BUSY signal is HIGH. If the reading is SPACE, a start bit is recognized, but if it is MARK, it is not taken as a start bit. This is not regarded as an error, but the search for the start bit is performed once again. [2] Data bit and Parity bit Data bits and parity bits are the data of the bits in question, which are represented by the state at the times sampling is performed. This is accomplished at time intervals equal to one bit in length, beginning from the middle of the start bit. The order of the bits is, starting with the bit closest to the start bit, bit-0, bit-1 . . . . . , parity bit. (Note: data bits are based on "one point sampling". ) [3] Stop bit The stop bit consists of one or more bits at "mark" level. When "space" level is detected for a stop bit, a framing error occurs. (3) Error Detection Parity, framing and overrun errors can be detected by your printer. When an error is detected, the ALARM lamp goes on, the buzzer is sounded, the related data is abandoned, and the printer shifts to the next incoming data. The ALARM lamp can be turned off by pressing the LINE switch. [1] Framing error When "space" state is detected during stop bit sampling, the ALARM lamp goes on, the buzzer sounds, and the related data is ignored. [. . . ] (3) Fehlerdetektion Die Fehlerdetektion des Druckers erfasst Paritäts-, Rahmungs- und Überlauffehler. Wenn ein Fehler erfasst wird, leuchtet die ALARM-Kontrolllampe auf, der Summer ertönt, die betroffenen Daten werden aufgegeben und der Drucker wechselt auf die nächsten eingehenden Daten. Die ALARM-Kontrolllampe kann durch Drücken der LINE-Taste gelöscht werden. [1] Rahmungsfehler Wenn bei der Abtastung eines Stoppbits ein , , Abstand"-Zustand erfasst wird, leuchtet die ALARMKontrolllampe auf, der Summer ertönt und die betroffenen Daten werden ignoriert. [. . . ]