Microcom 814M Manual del operador descargar pdf (Pagina 38)

6.1.2 RS-232 Serial Interface Signals

Printer serial port signals and status are described in the following table:

6.2 IEEE 1284 Parallel Interface (optional)

6.2.1 Parameters

− Data transmission: 8 bits Parallel

− Synchronization mode: nStrobe signal is provided by exterior

− Handshake mode: Busy signal

− Signal voltage level: TTL compatible

− Connector: 36 pin – Centronics

6.2.2 Parallel Interface Printer Status (/FAULT pin and PE pin)

PIN NO

Signal

name

Signal

direction

function

1 NO

2 RXD input Data input end

3 TXD output Data output end

4 DTR output Data terminal is ready

5 SG — Signal ground

6 DSR input Data device is ready

7 RTS output Request to send

8 CTS input Allow to send

9 FG — Frame Ground

Table 6-1 Serial Interface Signals

Status /FAULT

Normal high

low

Paper end low

high

Print head Overheated low

low

Other errors low

low

Table 6-2 /FAULT Pin and PE Explanation

1 2 ... 33 34 35 36 37 38 39 40 41 42 43 44 45 46

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Microcom 814M Manual del operador Pagina 38