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2. Configuring the PC Link Area
The data is sent from the send area within the PC Link Area of one CPU to the receive area within the PC Link
Area of the other CPU.
Each PC Link Area is composed of a relay link area and a data link area.
In both relay and data link areas, addresses must be assigned for the send and receive areas.
The send area relative address in the PC Link Area should not be overlapped in one network. If the send area
addresses overlapped each other in the same network, an error will occur.
The area available as the PC Link Area is configured as follows :
Link relays(L)
Word
Word relative
address
address
L0
0
Link relays(L) available for
Link relays(L)
relay link area in the
available for
P/W PC LINK 0 Area
P/W PC LINK 0
1,024 points
(64 words x 16 bits)
L63
63
L64
0
Link relays(L) available for
Link relays(L)
relay link area in the
available for
P/W PC LINK 1 Area
P/W PC LINK 1
1,024 points
(64 words x 16 bits)
L127
63
• Each CPU has 2 PC Link Areas available for :
P/W PC LINK 0,
P/W PC LINK 1
• Each PC Link Area is composed of 2 types of areas(a relay link area and a data link area) and the following areas
are available as PC Link Areas :
P/W PC LINK 0 : relay link area...Max. 1,024 points for link relays(L0 to L63F)
P/W PC LINK 1 : relay link area...Max. 1,024 points for link relays(L640 ot L127F)
• Any area which is not used as a part of PC Link Area set aside for the P/W PC Link can be used in same way as
internal relays and and data registers.
Notes :
• Both link relays(L) and link data registers(LD) have been set aside for use by the P/W PC LINK 0
and the P/W PC LINK 1.
One CPU can control a maximum of 2 P/W PC Links.
• The units set in PC Link Mode are designated as P/W PC LINK 0 and P/W PC LINK 1 starting with
the unit which is closest to the CPU.
data link area.....Max. 128 words for link data registers(LD0 to LD127)
data link area.....Max. 128 words for link data registers(LD128 to LD255)
Link data registers(LD)
Word
Word relative
address
address
L0
0
Link data
Link data registers(LD)
registers(LD)
available for the data link
available for
area in the P/W PC LINK 0
P/W PC LINK 0
128 words
L127
127
L128
0
Link data
Link data registers(LD)
registers(LD)
available for thedata link
available for
area in the P/W PC LINK 1
P/W PC LINK 1
128 words
L255
127
4-2.P/W PC Link
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