CHAPTER 2 –Hardware Installations
14 SPI-8450-LLVA
2.7.1 RS-422 / RS-485 specificationsy Transmission system: Asynchronous, half-/full-duplex serial transmissionconforming to RS-422/RS-485y 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# DJRS3: 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