Alere 55115, Руководство пользователя

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17 Alere™ Universal Printer User Manual
Appendix 5. Communication Interface
Appendix 5.1 Serial Interface
1. Interface signal
PIN Signal Name Signal Direction Function
1 None
2 RXD Input Data input terminal
3 TXD Output Data output terminal
4 DTR Output Data terminal is ready
5 SG – Signal ground
6 DSR Input Data device is ready
7 RTS Output Request transmission
8 CTS Input Allow transmission
9 FG – Frame ground
Appendix 5.1.1 printer signal and status
2. Wiring Diagram
PC --------- Printer
TXD -------- RXD
RXD -------- TXD
CTS -------- RTS
RTS -------- CTS
SG --------- SG
Important:
The following connection method can be used with only 3 pcs of wire. This method is
suitable for small data amount or XON/XOFF flow control:
PC --------- Printer
TXD -------- RXD
RXD -------- TXD
SG --------- SG
Appendix 5.2 USB Interface
USB interface meets USB 2.0 protocol standard and the connector (at the printer
terminal) is USB series B socket.
USB interface transmits signal and power via a four–wire cable, as shown in the
following figure:
Appendix figure 5.2.1 USB cable
Wire D+ and D- in appendix figure 5.2.1 are used for signal transmission,
the VBUS is +5V.