What Are Data Links?

Section 5-1

Example 3: Some nodes can receive data without sending data.

# 1

 

 

# 2

Area 1

 

 

 

 

# 2

 

# 2

 

 

 

 

 

 

 

 

 

Receive only

 

# 1

 

 

# 2

Area 2

 

 

# 2

 

 

# 2

 

 

 

 

 

Receive only

Example 4:

Area 1

Area 2

A node can receive only a specified number of words from the beginning of an area.

# 1

 

 

 

# 2

 

# 1

 

 

 

 

# 1

 

 

Several

 

 

 

# 2

 

 

 

 

 

 

words from

# 1

the begin-

# 2

ning of

# 1

area

# 1

 

 

 

 

 

 

 

 

 

# 2

Manually set data links are used to create flexible data links that meet the needs of the individual system.

Data links are set in the Controller Link Unit or Board of each node using the Support Software.

Area 1 and area 2 can be selected from PLC memory areas, including the DM Area and EM Area.

A send area and its size can be allocated freely for each node.

The sequence of receive nodes can be changed.

Nodes can be set that only send or only receive data.

Only part of send data can be received and an offset can be used to spec- ify the beginning of the desired part.

Manual Setting Options The following options can be set when manually setting data links.

Offsets

Data of the only the specified number of words can be received starting from the specified word position. The starting word is set as an offset from the beginning of the send data. The following is an example.

Area 1

#1

#1

Specified position in relation to the leading word

#2

#1

#2

Specified number of words

Specified position in relation to the leading word

Area 2

# 1

 

# 1

# 1

 

#2

Specified number of words

Easy Setting

The send data areas of all nodes can be set to the same size (same as for automatic setting described next).

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Omron CQM1H-CLK21, CVM1-CLK21, CS1W-RPT01, CJ1W-CLK21-V1, C200HW-CLK21, CS1W-CLK21-V1 operation manual Offsets, Easy Setting