Communications Connection Terminal; Procedure For Communications With Plc - YASKAWA VS-606V7 Series Instruction Manual

Communications connection terminal

Use the following S+, S-, R+ and R- terminals for MEMOBUS
communications. Change the termination resistor as shown below.
At RS-422, RS-485 communications: Turn ON SW2 ON/OFF
SW1
Notes:
1. Separate the wiring for communication from the main
circuit wiring or other power lines.
2. Use shielded cables for communication wiring; connect the
shielded sheath to the ground terminal and terminate the
other end to prevent it from being connected (to prevent
noise malfunction).
3. When communication is performed through RS-485,
connect S+ and R+, S- and R- terminals outside the
inverter as shown right side.

Procedure for communications with PLC

The following shows the procedure for communications with PLC.
1. Connect the communication cable between the PLC and the VS-606V7
with the power supply turned OFF.
2. Turn the power ON.
3. Set the constants (n151 to n157) required for communication by using
the digital operator.
4. Turn the power OFF once to verify that the digital operator displays
have been completely erased.
5. Turn the power ON again.
6. Communications with the PLC starts.
90
RS-422A
or RS-485
TERMINAL RESISTOR (1/2W, 120Ω)
SW2
PNP
NPN
12 13 14
1 2 3
switch of only the inverter at the
termination viewed from the PLC.
S
S
R
SW2
R
SW2 ON/OFF SWITCH
OFF ON
V
R R
S S
I
P 2 R + R -
P C S + S -