Tally Genicom MATRIX PRINTER 2250 - Manual (Page 171)

Interface cable
(serial interface) The cables used must be shielded. The cable shield must be connected
to the connector shield on both ends.
PC/AT (9-pin) Printer (9-pin)
RxD
TxD
CTS
SG
DSR
DTR 2
3
8
5
6
4 3
2
4
5 TxD
RxD
DTR/RDY
SG
PC/AT (25-pin) Printer (9-pin)
FG
TxD
RxD
CTS
SG
DSR
DTR 1
2
3
5
7
6
20
2
3
4
5
FG
RxD
TxD
DTR/RDY
SG
It depends on the menu setting whether DTR or RDY is active at
pin 4.
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Reference manual Interfaces
161