Omron SYSDRIVE 3G3JV, Communications Manual

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Chapter 1
1-4
Communications Methods
●
Applicable Line Wire Size, Terminal Screws, and Torque
Note For details on solderless terminal sizes and wiring methods, refer to the User's Manual.
●
Wiring Diagram
Note For information on wiring between the USB/RS-485 or RS-232C/RS-485 Converter and the
host computer, refer to the manual for the Converter.
■
Communications Parameters
With 3G3JE Communications Models (RS-485), communications parameters (communications unit
number, baud rate, data length, stop bits, and parity) can be set. The following table shows the com-
munications parameters and their setting ranges.
Terminal
screw size
Torque Wire type Wire size Recommended
wire size
Cable
M3 0.5 to 0.6 N·m Stranded wire
0.2 to 1.5 mm
2
(AWG24 to
AWG16)
0.75 mm
2
(AWG18)
Shielded twisted-pair
cable
Item Parameter No. Settings Default
Communications unit number P15 0 to 99 1
Communications baud rate P16 2.4, 4.8, 9.6, or 19.2 kbps 9.6 kbps
Communications data length P17 7 or 8 bits 7 bits
Communications stop bits P18 1 or 2 bits 2 bits
Communications parity P19 None, even, or odd Even
FG
+
−
SG
RS-485
RS-485
Terminal No. Signal
RS-485 (+)
RS-485 (
−
)
RS-485 (+)
RS-485 (
−
)
A
B
Host computer
RS-232C/USB
Inverter 3G3JE -A2001-FLK
-A2002B-FLK
-A2004B-FLK
3G3JE node
at end of line
RS-485
Shield
Shield
120
Ω
(1/2 W)
Terminator
Use a 120
Ω
(1/2 W) terminator.
Terminal No.
Signal
A
B
USB/RS-485 or
RS-232C/RS-485
Converter
Signal
Communi-
cations
terminals
Communi-
cations
terminals