3 communication interface specifications, 1 parallel interface (oki/oem standard type) – Oki POS 425D User Manual
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Developer’s Guide: English
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5.3 Communication Interface Specifications
5.3.1 Parallel Interface (OKI/OEM Standard Type)
1
Interface Spec (Between centronics connector and host PC)
Parallel interface signal part (IEEE-1284 parallel equivalent)
Centronics Connector Pin Assignment signal
A25012.doc
Pin No.
Signal Name
Direction
Function
1
nStrobe
From host PC
Data Strobe
2-9
DATA bit 1~8
From host PC
Data from host PC
10
nAck
To host PC
Receive completion
11
Busy
To host PC
Data receiving impossible
OEM Standard Type: Error
12
PError
To host PC
OKI Standard Type: Paper End
13
Select
To host PC
Online
14
nAutoFd
From host PC
1284 mode move request
15
NC
-
Not connected
16,19-
30, 33
GND
-
Signal ground
17
FG
-
Frame ground
18,35
+5V
To host PC
+5VDC power supply (Max 400mA)
31
nInit
From host PC
Initialization
32
nFault
To host PC
Error
OEM Standard Type: Not used
34
DK_STATUS
To host PC
OKI Standard Type: Cash Drawer status signal
36
nSelectln
From host PC
1284 mode move request
Note: Pin arrangement
OP425_05.eps
1
18
19
36