Назначение контактов и описание сигналов стандартного принтерного шнура Centrоnics.

Pin Abbreviation Signal/function
1 STROBE – Strobe (active low to read data)
2 DATA 1 – data line 1
3 DATA 2 – data line 2
4 DATA 3 – data line 3
5 DATA 4 – data line 4
6 DATA 5 – data line 5
7 DATA 6 – data line 6
8 DATA 7 – data line 7
9 DATA 8 – data line 8
10 ACKNLG – Acknowledge (pulsed low to indicate that data has been received)
11 BUSY – Busy (taken high under the following conditions:
(a) during data entry
(b) during printing operation
(c) when printer is OFF-LINE
(d) during print error status)
12 PE – Paper end (taken high to indicate that the printer is out of paper)
13 SLCT – Select (taken high to indicate that the printer is in the selected state)
14 AUTO FEED XT – Automatic feed (when this input is taken low, the printer is instructed to produce an automatic line feed after printing. This function can be selected internally by means of a DIP switch)
15 n.c. – Not connected (unused)
16 0V – Logic ground
17 CHASSIS GND – Printer chassis (normally isolated from logic ground at the printer)
18 n.c. – Not connected (unused)
19-30 GND – Signal ground (origionally defined as ‘twisted pair earth returns’ for pin numbers 1 to 12 inclusive)
31 INIT – Initialize (this line is pulsed low to reset the printer controller)
32 ERROR – Error (taken low by the printer to indicate:
(a) PAPER END state
(b) OFF-LINE state
(c) error state)
33 GND – Signal ground
34 n.c. – Not connected (unused)
35 LOGIC 1 – Logic 1 (usually pulled high via 3.3 kohm)
36 SLCT IN – Select input (data entry to printer is only possible when this line is taken low, but this function may beі disabled by means of an internal DIP switch)

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/19 _ _ _ _ _ _ _ _ _ 36\
/ 1 _ _ _ _ _ _ _ _ _ _ 18\
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