Oriental motor BLV Series - Page 29

Connection
29
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Connection example with a host controller (RS-485 communication)
Driver 1st unitHost controller
SG
RS-485
*1
485GND
TR+
TR
-
485GND
TR+
TR
-
120 Ω
SG
Driver 2nd unit
485GND
TR+
TR
-
485GND
TR+
TR
-
120 Ω
SG
Driver 31th unit
485GND
TR+
TR
-
120 Ω
SG
*2
9
10
8
24
22
23
9
10
8
24
22
23
9
10
8
24
22
23
*1 Termination resistor 120 Ω
*2 Set the "RS-485 communication termination resistor" parameter to "Enable" with the support software.
•
Be sure to connect a power supply for communication when using the product via RS-485 communication.
•
Use twisted-pair wires for the communication cable and keep the total extension distance up to 10 m (32.8 ft.).
•
Keep 31 units or less for the number of drivers connected.
•
The SG is insulated from the ground for main power supply.
Refer to p.45 for the communication specications.