Omron CJ1W-CLK21-V1, CVM1-CLK21 Set the following pins for the baud rate setting DIP switch

CVM1 and CV-series Controller Link Units Section 4-4

2.Do not set the same node address twice within the same Network. An error will occur if the same address is set for two different nodes. The ERC indi- cator on the front of the Unit will light and either communications will stop, or the INS indicator will not light and you will be unable to participate in the Network.

3.The send sequence for the data link areas is determined according to the sequence of node addresses for automatically set data links.

4.Assign node addresses consecutively beginning from 01 whenever possi- ble to minimize Network construction time.

4-4-4 Baud Rates

Set the following pins for the baud rate setting (DIP switch).

ON

1 2 3 4

Pin 1, 2: Baud rate

Pin 3, 4: Not used (must be OFF)

The factory default setting is shown above.

Note 1. Always turn OFF the PLC’s power before setting the baud rate.

2.Keep pins 3 and 4 set to OFF. If they are turned ON, internal data may be erased.

Set the same baud rate for all the nodes on the Network using DIP switch pins 1 and 2 on the front of the Unit. The baud rate is set as shown below.

The maximum transmission distance will also change according to the setting.

	Switch			Baud rate	Maximum
					transmission distance
	Pin 1		Pin 2
OFF		OFF		2 Mbps	500 m
ON		OFF		1 Mbps	800 m
OFF		ON		500 Kbps	1 km
ON		ON		Do not set.

Note The factory default setting is shown in bold.

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.

4-4-5 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.

	ON
Switch at the front	Terminating resistance
OFF (factory default)	Not connected.
ON	connected

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