Cqm1H-Series Controller Link Units; Overview - Omron SYSMAC CS1W-RPT01 Operation Manual

CQM1H-series Controller Link Units

Note
4-5 CQM1H-series Controller Link Units
4-5-1

Overview

102
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 indicator will light when the terminating resistance switch is set
to ON.
The following settings are required for a Controller Link Unit when used with a
CQM1H-series PLC.
Item
Node address Node address switch
Baud rate Baud rate switch, pins 1 and 2
Terminating resistance Terminating resistance switch
Node Addresses
01 to 32 (default is 01)
Setting Baud Rate
Pin 1
OFF
ON
OFF
ON
Note The factory default setting is in bold.
Terminating Resistance
Switch
OFF
(default)
ON
Switch
Setting range
All nodes in the Network
Switch Baud rate
Pin 2
OFF 2 Mbps
OFF 1 Mbps
ON 500 Kbps
ON Do not set.
Terminating
resistance
Not connected
Connected
Section 4-5
Page
103
103
104
Nodes
Maximum Nodes
transmis-
sion dis-
tance
500 m Set same
rate for all
800 m
nodes in Net-
1 km
work.
Nodes
All the nodes
Turn ON the terminating resis-
tance at the nodes at both
ends of the Network and turn it
OFF at all other nodes.