4-2.P/W PC Link
29
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)
Link data registers(LD)
• 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)
data link area.....Max. 128 words for link data registers(LD0 to LD127)
P/W PC LINK 1 : relay link area...Max. 1,024 points for link relays(L640 ot L127F)
data link area.....Max. 128 words for link data registers(LD128 to LD255)
• 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.
Link relays(L) available for
relay link area in the
P/W PC LINK 0 Area
1,024 points
(64 words x 16 bits)
Link relays(L) available for
relay link area in the
P/W PC LINK 1 Area
1,024 points
(64 words x 16 bits)
Link data registers(LD)
available for the data link
area in the P/W PC LINK 0
128 words
Link data registers(LD)
available for thedata link
area in the P/W PC LINK 1
128 words
Link relays(L)
available for
P/W PC LINK 0
Link relays(L)
available for
P/W PC LINK 1
Link data
registers(LD)
available for
P/W PC LINK 0
Link data
registers(LD)
available for
P/W PC LINK 1
Word
address
Word relative
address
Word
address
Word relative
address
L64 0
L127 63
L0 0
L127 127
L128 0
L255 127
L0 0
L63 63
