S
MART
AXIS P
RO
/L
ITE
U
SER
'
S
M
ANUAL
FT9Y-B1378
10-3
10: U
SER
C
OMMUNICATION
I
NSTRUCTIONS
RS485 User Communication System Setup
Using the RS485 user communication, a maximum of 31 RS485 devices can be connected to the SmartAXIS.
When using port 2 or 3 for RS485 communication on the SmartAXIS, install the RS485 communication cartridge (FT1A-PC2 or
FT1A-PC3) to the expansion communication port.
Connect RS485 device to the RS485 terminals A, B, and SG of port 2 or 3 on the SmartAXIS using a shielded twisted pair cable as
shown below. When using the RS485 communication cartridge (FT1A-PC2) to the expansion communication port, use the user
communication cable FC2A-KP1C. One end of the user communication cable is not provided with a connector, and can be
terminated with a proper connector to plug in to communicate with the RS232C port.
To Port 2
RS485 Communication Cartridge
FT1A-PC3
To Port 3
To Port 2
RS485 Communication Cartridge
FT1A-PC2
To Port 3
31 devices maximum
Shielded twisted pair cable
200 meters (656 feet) maximum
Core wire 0.3 mm2
RS485 Device
RS485 Device
RS485 Device
Cable Connector Pinouts
Pin
Port 2, Port 3
AWG#
Color
1
2
B
8
Twisted
Black
2
A
28
Yellow
3
NC (no connection)
28
Blue
4
NC (no connection)
28
Green
5
NC (no connection)
28
Brown
6
NC (no connection)
28
Gray
7
SG (signal ground)
26
Twisted
Red
8
NC (no connection)
26
White
Cover
—
—
Shield
Signal Direction
Содержание FT1A-B12RA
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