3onedata SW4485 Instrucciones - Página 3
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DB9F RS-232 serial interface
Pin
Pin Name
Pin Meaning
—
1
No connection
2
TxD
Data transmit terminal
3
RxD
Data receiving terminal
—
4
No connection
5
GND
Ground Line
—
6
No connection
—
7
No connection
—
8
No connection
—
9
No connection
RS-485 PC Interface:
For SW4485, RS-485 PC port matches 3 terminals,
the pin is defined as follows:
RS-485 terminal
3
Pin
Signal Instruction
Terminal
Meanin
1
D+
+ signal of RS-485 input (out)
2
D-
- signal of RS-485 input (out)
3
GND
Signal Ground
RS-485 lower position controller port:
For SW4485, RS-485 lower position controller port
matches 10 terminals, pin defined as follows:
RS-485 terminal
Pin
10 terminals
Signal Instuction
Meaning
1
1D+
+ signal of RS-485 input
2
1D-
- signal of RS-485 input
3
2D+
+ signal of RS-485 input
4
2D-
- signal of RS-485 input
5
6
7
8
9
10
RS-485 Port fault alarm and protection
RS-485 port fault alarm and protection is the
solution to connect multiple RS-485 devices, an effective
way to enhance its reliability. SW4485 HUB has 4 lower
position controller ports, and each port has reverse
connect protection function, and can work in shutdown
mode. Any RS-485 port
affect its RS-485 BUS system, will not affect the normal
work of other interface connected with RS-485 system.
(out) side
Users can quickly determine fault port and other
connected devices according to the fault alarm light.
(out) side
Note: The connection of
ports of the same SW4485 HUB is wrong
(out) side
connection.
(out) side
【LED Indicator】
3D+
+ signal of RS-485 input
(out) side
3D-
- signal of RS-485 input
(out) side
4D+
+ signal of RS-485 input
(out) side
4D-
- signal of RS-485 input
(out) side
GND
Signal Ground
GND
Signal Ground
reverse connection will only
lower position controller