HP d640 HP D640 High-Volume Printer - Installation Manual (Printer and Accesso - Page 111
Host Computer Interface Installation and Configuration, RS-232 and RS-422 Configuration
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. (RS-232 interface) FGround TxD RxD RTS Ground 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 *422Sel DTR Printer Interfaces (RS-422 interface) FGround 1 2 RxDA 3 4 5 6 Ground 7 8 TxDA 9 TxDB 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 *422Sel RxDB Figure 3-3 RS-232 and RS-422 Configuration Host Interface Host Computer Interface Installation and Configuration 3-9
Printer Interfaces
Host Computer Interface Installation and Configuration
3-9
Host Interface
.
Figure 3-3
RS-232 and RS-422 Configuration
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FGround
TxD
RxD
RTS
Ground
*422Sel
DTR
FGround
RxDA
Ground
TxDA
TxDB
*422Sel
RxDB
(RS-232 interface)
(RS-422 interface)