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User's Guide 71
Parallel (Centronics) Interface
The parallel port uses a standard 36-pin Centronics connector.
Pin Direction Definition Pin Direction Definition
1 In /STROBE 13 Out SELECT
2 In Data 1 14,15 NC
3 In Data 2 16 - Ground
4 In Data 3 17 - Ground
5 In Data 4 18 NC
6 In Data 5 19 to 30 - Ground
7 In Data 6 31 NC
8 In Data 7 32 Out /Fault
9 In Data 8 33 to 36 - NC
10 Out /ACK
11 Out BUSY
12 Out PE
Auto Interface Select
The setup feature Interface Select controls the operation of interface arbitration. One of 3 settings is possible:
Parallel Only: With this setting the serial interface is ignored.
Serial Only: With this setting the parallel interface is ignored.
Auto Select: With this setting, the printer automatically arbitrates between the parallel and serial interfaces. The first
interface to go active maintains active status while the other interface is held busy. After a time out period, the other
interface is placed in a ready state.