Omron CS1W-CLK21-V1, CVM1-CLK21, CS1W-RPT01, CJ1W-CLK21-V1, C200HW-CLK21 Repeater Units, Section

Repeater Units Section 4-6

Note Set the same baud rate for all the nodes on the Network. Normal communica- tion cannot be performed unless the same baud rate is set for all the nodes.

4-5-4 Terminating Resistance

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.

	(The diagram shows the factory setting.)
Switch at the front		Terminating resistance
OFF (default)		Not connected.
ON		connected

Note 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.

4.The switch is factory-set to OFF (terminating resistance not connected).

4-6 Repeater Units

Repeater Units must be set as shown in the following table before starting communications.

Item	Switch	Page
Baud rate	Baud rate switch, pin 1	103
Terminating resistance	Terminating resistance switch	104

102