Link Relay And Link Register Allocations - NAiS FP2 Technical Manual

5.2.3

Link Relay and Link Register Allocations

Link relays and link registers used with the PC(PLC) link function are allocated to the link area of CPU.
The link area is allocated by specifying the system register for the CPU.
System registers
No.
Specification of range of link relays used for
40
communication
Specification of range of link registers used for
41
communication
Starting number for link relay transmision
42
For
(No. of first word)
PC(PL
43 Link relay transmission size
C)
Starting number for link register transmission
link 0 44
(first number )
45 Link register transmission size
46 PC(PLC) link switching flag
47 Setting of max. unit No. for MEWNET-W0 PC(PLC) link
46 PC(PLC) link switching flag
Specification of range of link relays used for
50
communication
Specification of range of link registers used for
51
For
communciation
PC(PL
Starting number for link relay transmission
52
C)
(No. of first word)
link 1
53 Link relay transmission size
Starting number for link register transmission
54
(first number)
55 Link register transmission size
57 Setting of max. unit No. for MEWNET-W0 PC(PLC) link
Note) The same number must be specified as the maximum unit No. for all the PLCs with PC(PLC) link.
Link area configuration
• Link areas consist of link relays and link registers, and are divided into areas for PC(PLC) link 0 and
PC(PLC) link 1 and used with those units.
• The link relay which can ben us ed in an area for either PC(PLC) link 0 or PC(PLC) link 1 is maximum
1024 points (64 words), and the link register is maximum 128 words.
Note:
Link areas are the shared areas for MEWNET-W0 (supported by MCU) and MEWNET-W (supported by
Multi-wire Link Unit). Therefore, the PC(PLC) link modes with MEWNET-W0 and MEWNET-W are
limited up to 2 systems in the combination of PC(PLC) link 0 and 1.
Reference:
For the details on MEWNET-W, refer to <FP2 Multi-wire Link Unit Manual ARCT1F284>.
5-6
Name
Defaul
Setting range
t value
0 0 to 64 words
0 0 to 128 words
0 0 to 63
0 0 to 64 words
0 0 to 127
0 0 to 128 words
st
Stan- Standard: 1 unit
nd
dard Reverse: 2 unit
Note)
0 0 to 16
nd
Stan- Standard: 2 unit
st
dard Reverse: 1 unit
0 0 to 64 words
0 0 to 128 words
64 64 to 127
0 0 to 64 words
128 128 to 255
0 0 to 128 words
Note)
0 0 to 16