Panasonic KX-P1150 Operating Instructions Manual page 41

Communication with a computer is accomplished through a parallel interface based on the Centronics
standard.
Specifications:
» data transfer speed: 1000 cps minimum
* synchronization: external STROBE pulse
» logic levels: TTL (Transistor-Transistor-Logic) levels
* handshaking: BUSY and ACK signals
w connector type: 57-30360 (AMPHENOL) or equivalent
s cable: use a shielded cable (6'5"/1.95 meters) or less in length.
When the printer is processing data, the BUSY Signal is high. The printer will not accept new data from >
the computer. After the processing is completed, the BUSY signal goes low. (The BUSY signal is also
high when the printer is OFF LINE). When the busy signal occurs, the ACK signal goes low indicating
to the computer that the data has been processed and the printer is ready to accept more data. This
handshaking routine occurs each time a character is sent to the printer.
LOW : HIGH |
LOW LOW |
HIGH | LOW HIGH | LOW |
Printer Status signals
1 i
| 18 : E
i i ODBOCLZEOCĽDODOCLSOCCOOC /
i OCOCCOOOOOCOOOCOCCOC
: 36 19
EEN N EE |
Parallel Interface Connector (Printer side)
Return |
side
AUTO FEED XT . Input
| +5V ; Output |
' 81 | 30 ! PRIME | Input |
| 82 | : ERROR i Output `
33 ; | sa |
Pin Configuration (Parallel)
A1