Oki Microline 3390 User Manual page 289

Appendix D: Interface Data
Pin Description
D-2
Pin Signal
1 DATA STROBE
2-9 DATA BIT 1-8
10 ACKNOWLEDGE
11 BUSY
12 PAPER END
13 SELECT
14* AUTOFEED
15 --
16 0 V
17CHASSIS GROUND
18* + 5 V
19-30 0 V
31 ** I-PRIME
32 FAULT
33 0 V
34 --
35 --
36 SELECT-IN
* Pin 14 and 18 can be activated/deactivated by menu item Auto Feed XT or Pin
18.
Direction Description
To printer When the signal changes from low
to high level, input data is sampled.
To printer Input data lines. The High level
represents 1, the Low level repre-
sents 0
From printer The High level of this signal
indicates completion of data input
or function operation.
From printer The High level of this signal
indicates that the printer cannot
receive data. The low level of the
signal indicates that the printer is
ready for receiving data.
From printer The High level of this signal
indicates that a paper end has
been detected.
From printer The High level of this signal
indicates that the printer is in the
select mode (ON LINE).
To printer In EPSON emulation a Low level
of the signal activates the auto line
feed.
-- Not assigned.
-- Signal ground
-- Frame ground
From printer + 5-volt supply (max. 50 mA).
-- Twisted pair return for pins 1 to 11.
To printer Signal Low: Printer controller is
initialised. The low level should be
held for more than 0.5 ms.
From printer When the paper end is detected this
signal changes from High to Low.
-- Signal ground
-- Not assigned.
-- Not assigned.
To printer The High level of this signal
indicates that the printer can only
be selected and deselected using
DC1 and DC3 control codes.