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2.2.15 RS-485 Terminal Block (CN15)
An RS-485 port with 2-pin terminal block.
Note!
1.
2.
PCM-C3503 doesn’t support this function.
For RS-485 applications, the two ends of the cable will have a termination resistor connected across the two wires. Without termination resistors, reflections of fast driver edges can cause multiple
data edges that can cause data corruption. Please add a termination resistor (120 ohms) on your end device (R332 of PCM-C3530,
default is N/L), please refer Figure 2.17 and 2.18.
Figure 2.16 RS-485 Terminal Block
Pin
Description
Pin
Description
1
COM 5_RS485_D-
2
COM 5_RS485_D+
Figure 2.17 RS-485 Bus
Figure 2.18 Schematic about RS-485 of PCM-C3500
PCM-C3500 Series Evaluation Kit User Manual
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