Contec SPI-8450-LLVA Computer Hardware User Manual


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CHAPTER 2 –Hardware Installations
14
SPI-8450-LLVA
2.7.1 RS-422 / RS-485 specifications
y Transmission system: Asynchronous, half-/full-duplex serial transmission
conforming to RS-422/RS-485
y Baud rate: 19200 to 50bpx (programmable)
Signal extensible distance: 1.2km Max.
RTS#
JRS2: 7-8
TXD
D
JRS2: 5-6
JRS2: 4-6
R
RXD
47k Ω
6.2kΩ
6.2kΩ
47k Ω
R
CTS#
47k Ω
6.2kΩ
6.2kΩ
47k Ω
RTS#
D
JRS3: 3-4
120 Ω
JRS3: 1-2
120 Ω
JRS3: 7-8
120 Ω
10 5
61
JRS3: 5-6120 Ω
+5V
CN9
Terminating Resister
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