Epson TM-U950P Specifications - Page 123

GS r n [Name] Transmit status [Format] [Range] HH 1 £ n £ 3, 49 £ n £ 51 [Description] Transmits the status specified by n as, follows: n Function 1, 49 Transmits paper sensor status (same as ESC v) 2, 50 Transmits drawer kick-out connector status (same as ESC u 0) 3, 51 Transmits slip paper status [Notes] When DTR/DSR control is selected, the printer transmits only 1 byte after confirming the host is ready to receive data (DSR signal is SPACE). If the host computer is not ready to receive data (DSR signal is MARK), the printer waits until the host is ready. When XON/XOFF control is selected, the printer transmits only 1 byte without confirming the condition of the DSR signal. This command is executed when the data in the receive buffer is developed. Therefore, there may be a time lag between receiving this command and transmitting the status, depending on the receive buffer status. When Automatic Status Back (ASB) is enabled using GS a, the status transmitted by GS r and the ASB status must be differentiated using the table in APPENDIX B. If the value of n is out of the specified range, the printer ignores this command. The status types to be transmitted are shown below: n = 1: Paper sensor status Bit Function 0 Journal near-end sensor 1 Receipt near-end sensor 2 Journal sensor 3 Receipt sensor 4 Not used 5 Slip insertion sensor 6 Slip ejection sensor 7 Not used Value 0 1 Paper present No paper Paper present No paper Paper present No paper Paper present No paper Fixed to 0 Paper present No paper Paper present No paper Fixed to 0 TITLE EPSON TM-U950/U950P Specification (STANDARD) SHEET REVISION NO. NEXT A 9953 SHEET 924