Terminating Resistance; Cj-Series Controller Link Units - Omron SYSMAC CS1W-RPT01 Operation Manual

CJ-series Controller Link Units

Note
4-1-5

Terminating Resistance

Note
4-2 CJ-series Controller Link Units
1. Set the same baud rate for all the nodes on the Network. Normal commu-
nication cannot be performed unless the same baud rate is set for all the
nodes.
2. The default setting is 2 Mbps, 500 m.
Turn ON the terminating resistance using the switch on the bottom of the Unit
for the Units of both ends of the Network. The terminating resistance is
required at both ends of a Network to absorb unnecessary signals and reduce
noise.
The Controller Link Unit has built-in terminating resistance, which can be con-
nected simply by turning ON the slide switch.
Bottom switch
OFF (factory default)
ON
1. Always turn OFF the PLC's power before setting the terminating resistance
switch.
2. Turn ON the switch to connect terminating resistance at the nodes at both
ends of the Network and turn OFF the switch at all other nodes. Normal
communication cannot be performed in the Network unless all the nodes
are set properly.
3. The TER LED indicator will light when the terminating resistance switch is
set to ON.
4. The default setting is OFF (not connected).
The following settings are required for a Controller Link Unit used with a CJ-
series PLC.
Item
Unit number Unit number setting switch
Node address Node address switches
Baud rate Baud rate, pins 1 and 2
Terminating resistance Terminating resistance switch
Section 4-2
ON
Terminating resistance
Not connected.
Connected.
Switch Page
92
93
94
94
91