Interconnections | M-Series User ’s Guide |
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Data Specifications
When communicating via the serial data port (RS-232), the baud rate, number of data bits, and the parity are user-selectable (see Section 4 for acceptable setting combinations). Parity only applies to data transmitted by the printer, since it ignores the parity of received data. The M-Series Printer is fixed at 1 stop bit, so make sure that your host is also set at 1 stop bit.
When communicating via the parallel port, the previously mentioned parameters are not considered.
RS-232 Serial Data PortThe connections for the standard interface are made through the DB25S connector on the rear panel. For all RS-232 input and output signals, the M-Series Printer follows both the Electronics Industries Association’s (EIA) RS-232 and the Consultative Committee for International Telegraph and Telephone (CCITT) V.24 standard signal level specifications.
Pin No. | Description |
1 | | Frame Ground for Cable Shield |
2 | | TXD (Transmit Data) output from the printer |
3 | | RXD (Receive Data) input to the printer |
4 | | RTS (Request To Send) output from the printer |
6 | | DSR (Data Set Ready) input to the printer |
7 | | Signal Ground |
20 | | DTR (Data Terminal Ready) output from the printer |
Note: | Pins 5, 8, 10-19, and 21-25 are not used and are unterminated. |
Table 5.1 RS-232C Pinouts
5-2