Omron V1000 - Network Termination

n
RS-485 Interface
SI-485/J
OFF
S2
R+
R–
IG
S+
S–
SI-485/J
OFF
S2
R+
R–
IG
S+
S–
SI-485/J
ON
S2
R+
R–
IG
S+
S–
S+
S–
IG
R+
R–
PLC
Drive
Drive
Drive
Terminating
Register
Terminating
Register
Terminating
Register
Figure C.3 RS-485 Interface
Note: • Turn on the DIP switch at the SI-485/J that is located at the end of the network. Turn it off at all other slaves.
• Set H5-07 to “1” when using the RS-485 interface.
n
RS-422 Interface
S+
S–
IG
R+
R–
PLC
SI-485/J
OFF
S2
R+
R–
IG
S+
S–
SI-485/J
OFF
S2
R+
R–
IG
S+
S–
SI-485/J
ON
S2
R+
R–
IG
S+
S–
Drive
Drive
Drive
Terminating
Register
Terminating
Register
Terminating
Register
Figure C.4 RS-422 Interface
Note: • Turn on the DIP switch at the SI-485/J that is located at the end of the network. Turn it off at all other slaves.
• Set H5-07 to “0” when using the RS-485 interface.
u
Network Termination
The two ends of the MEMOBUS/Modbus network line have to be terminated. The drive has a built in terminating resistance
that can be enabled or disabled using DIP switch S2. If a drive is located at the end of a network line, enable the terminating
resistance by setting DIP switch S2 to the ON position. Disable the terminating resistance on all slaves that are not located
at the network line end. Figure C.5 illustrates the setting of DIP switch S2.
C.4
Connecting to a Network
356
SIEP C710606 20 OYMC AC Drive - V1000 User Manual
7/16/2008-13:23