Epson TM U200D Technical Reference - Page 34

First Status Second Status Third Status Fourth Status Œ 0001 0000 0000 0000 0000 0000 0000 0000 Near end detection  0101 1000 0000 0000 0000 0011 0000 0000 FEED button is pressed Ž 0001 0000 0000 0000 0000 0011 0000 0000 FEED button is released When the ASB status is received following this, a total of eight (8) bytes of ASB will be transmitted as follows: Accumulated ASB (Œ++Ž) First Status Accumulated ASB (Œ++Ž) 0101 0000 + First Status The latest ASB (Ž) Fourth Status 0001 0000 Second Status 0000 0000 Second Status Third Status 0000 0000 Third Status 0000 0000 0000 0000 Fourth Status 0000 0000 Fourth Status 0000 0000 Notes on setting DIP switch 1-8 to ON The printer mechanism stops but does not become busy when an error has occurred, printing stops due to a paper end, or paper is fed using the FEED button. When setting DIP switch 1-8 to ON to enable handshaking with the printer, be sure to check the printer status with GS a and ASB function. In this setting, the default value of n for GS a is 2. The printer automatically transmits the printer status, depending on on-line/off-line changes. When using DLE EOT and DLE ENQ, be sure that the receive buffer does not become full. t When using a host that cannot transmit data when the printer is busy and if an error occurs, DLE EOT and DLE ENQ cannot be used when printer is busy due to receive buffer-full state. t If the host can transmit data when the printer is busy and, the receive buffer becomes full while the host is sending bit-image data, a DLE EOT or DLE ENQ command used while sending bit-image data is processed as bit-image data, not as a command. Secondly, any data transmitted when the receive buffer is full may be lost. Example: Check the printer status using GS r after transmitting each line of data and use the 1K byte receive buffer. Transmit one line of data so that the receive buffer does not become full. 1-22 Features and General Specifications Rev.B