IBM 6400-D Generation II Series, Setup Manual

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RS-232 And RS-422 Serial Interface Configuration
125
PC Parallel Interface
The PC Parallel interface (also referred to as the “Centronics**” interface)
enables the printer to operate with controllers designed for buffered PC
Parallel printers. The length of the data cable from the host computer to the
printer must not exceed 15 feet (5 meters).
NOTE: For a more reliable data transfer, a maximum cable length of six feet
is recommended.
Table 3. Printer PC Parallel Interface Connector Pin Assignments
Input Signals
Signal Pin
Output Signals
Signal Pin
Miscellaneous
Signal Pin
DATA LINE 1 2
Return 20
ACKNOWLEDGE 10
Return 28
CHASSIS GROUND 17
DATA LINE 2 3
Return 21
ONLINE/SELECT 13
Fault 32
GROUND (GND) 16, 30
DATA LINE 3 4
Return 22
PAPER EMPTY 12
Return 30
(NC) 34
DATA LINE 4 5
Return 23
BUSY 11
Return 29
DATA LINE 5 6
Return 24
NAUTO FEED 14
DATA LINE 6 7
Return 25
NINIT (PRIME) 31
DATA LINE 7 8
Return 26
NOT DATAPRODUCTS* 35
DATA LINE 8 9
Return 27
EXTERNAL 5 VOLTS 18
DATA STROBE 1
Return 19
N SELECT 36
PAPER INSTRUCTION 15
Return
33
* Used by DP adapter.
PC Parallel Interface