Panasonic KX-P3626 - Manual (Page 62)

Parallel Interfacing
A method of transferring data from a computer to a printer 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
• connector type: 57-30360 (AMPHENOL) or equivalent
• cable: use a shielded cable (6"571.95 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.
BUSY SLOT PO ERROR
ON LINE LOVy HIGH LOW HIGH
OFF LINE HIGH LOW LOW LOW
PAPER OUT HIGH LOW HIGH LOW
Printer status signals
18 1
oooooooooooooooooo
oooooooooooooooooo
l 36 19,
Parallel interface connector (printer side)
Signal
pin
Return
side
pin
Signal
Direc­
tion
1 19 STB
2 20 D A T A I
3 2 1 DATA 2
4 22 D A T A 3
Input
5 23 DATA 4
6 24 D A T A S
7 2 5 DATA 6
8 26 DATA 7
9 27 DATA 8
10 28 ACK
11 29 BUSY Output
12 PO
Singal
pin
Return
side
pin
Signal
Direc­
tion
13 SLOT Output
14 AUTO FEED XT Input
15
16 SG
17 FG
18 +5V Output
31 30 PRIME Input
32 ERROR Output
33 SG
34
35
36 SLCT IN Input
Pin configuration (Parallel)
62