Tally T5023+ Programming Manual page 387

Appendix
Pin-No. Host
(1284-A)
25-pin
D-SUB plug
25
Pin-No. Printer
(1284-B)
36-pin
Centronics plug
30
16
17
18
15, 33-35
T5023/5023+ - Programming Guide
Description of the physical interface
Signal description
Signal Ground (nAutoFd,
nSelectIn, nInit)
Logic Ground
Chassis Ground
Peripherial Logic High (+5V)
Not defined
377