FPC-N64 User Manual
6
Table 2-4 Bit description of RS232 or RS485 connector
Bit
Description
Single
1
ON: Have matched with a resistor of 120 ohm
OFF: No
Term
2
ON: Have pulled up a resistor of 510 ohm
OFF: No
Bias-
3
ON: Have pulled down a resistor of 510 ohm
OFF: No
Bias+
4
ON: Select RS232
OFF: Select RS485
Select RS232 or RS485
2.2.4 RS485 Connector
Standard vertical 1 x 3 x 3.81 mm male Terminal Block
.
Figure 2-8 RS485 connector
Table 2-5 Pin description of RS485 connector
Pin
Description
Remarks
1
RS485_A
IO
2
RS485_B
IO
3
GND
