Omron CQM1H-CLK21, CVM1-CLK21, CS1W-RPT01, CJ1W-CLK21-V1 5 CQM1H-series Controller Link Unit

Component Names and Functions Section 3-1

3-1-5 CQM1H-series Controller Link Unit

Indicators (Refer to p. 53 and 276)

LED indicators that display the Unit and network status.

Node address switches (Refer to p. 101)

Two rotary switches. The node address of the Unit on the

Controller Link Network is set in 2-digit decimal.

Baud rate switch (Refer to p. 101)

bit/s

Terminating resistance switch (Refer to p. 102)

k

A slide switch. Use this switch to set the terminating resistance to ON for the nodes at both ends of the Controller Link Network.

Terminal block for the communications cable (Refer to p. 66)

Terminals to connect to the Controller Link Network communications cable (twisted-pair cable).

Wired Unit Indicators

Name	Color	Status		Meaning
RUN	Green	Lit	Unit operating normally.
(operating)
		Not lit	Unit error.
TER	Yellow	Lit	Terminating resistance switch ON.
(terminating
		Not lit	Terminating resistance switch OFF.
resistance)
ERC (communica-	Red	Lit	Communications error, node address
tions error)			setting error (same address set twice), or
			hardware error.
		Not lit	Normal operation
ERH	Red	Lit	PLC error, PLC interface error, or
(PLC error)			EEPROM error
		Not lit	No error.
INS	Yellow	Lit	Unit is participating (inserted) in the net-
(network			work.
participation)
		Not lit	Unit is not participating (inserted) in the
			network.
M/A	Yellow	Lit	Manual		Note:
(data link mode)			(see note)		M/A is always not lit
					when data links are not
		Not lit	Automatic
					active in the network.
LNK	Yellow	Lit	Participating in data links.
(data link)
		Flashing	Error in data link tables.
		Not lit	Not in a data link or data link inactive.
SD	Yellow	Lit	Data transmission.
(send)
		Not lit	No data transmission.
RD	Yellow	Lit	Data reception.
(receive)
		Not lit	No data reception.

53