Omron CQM1H-CLK21 Baud Rates and Operating Levels, Baud Rate Pins 1, Setting the Operating

C200HX/HG/HE Controller Link Units		Section 4-3
	Item	Specifications
	Setting method	2-digit decimal
	Setting range	01 to 32 (default is 01)
	Node	All nodes in the Network

Set the node address using a small flat-blade screwdriver, being careful not to damage the rotary switches.

Note 1. Always turn OFF the PLC’s power before setting the node address.

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.

4-3-3 Baud Rates and Operating Levels

Set the following pins for the baud rate and operating level settings (DIP switch).

SW1

ON

1 2 3 4

Pin 4: Operating level

Pin 3: Not used (must be OFF)

Pins 1, 2: Baud rate

Note: The factory default settings are shown above.

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

2. Keep pin 3 set to OFF. If it is turned ON, internal data may be erased.

Baud Rate (Pins 1 and 2)	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.
		Pins			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.
Setting the Operating	With C200HX/HG/HE PLCs, Networks can be constructed by mounting up to
Level (Pin 4)	two Communications Units, such as Controller Link Units, SYSMAC LINK
	Units and SYSMAC NET Link Units for the same PLC Each of these Units
	must run on a different operating level.
	Set the Controller Link Unit to operating level 1 or 0 using DIP switch pin 4 on
	the front of the Unit.

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