YOKOGAWA F3LP32-0N, User Manual

Page: 79 / 104

4-5
IM 34M06H43-02E 2nd Edition : Sep.30, 2019-00
CAUTION
Any link register specified in the program will be refreshed regardless of whether the
instruction using the register is actually executed eventually.
To refresh all link relays and link registers, write the following program:
Figure 4.1.7 Refreshing L00001-L01024, W00001-W01024
When using indexed link relays (L) or link registers (W), set the index range as
follows to ensure refreshing.
Figure 4.1.8 Using W00021 - W00030 with Index Modification
(1) Index modification/indirect specification
Index modification or indirect specification is available only within the same link
system. Do not use it across different systems.
(2) Block transfer or calculation for multiple devices
Block transfer or calculation involving multiple devices is available only within the
same link system. Do not use it across different systems. Beware especially
when specifying the number of words to be transferred or computed using a
device.
4.1.3 Cyclic Transmission
Cyclic transmission refers to updating of the link device data between the local and
remote stations.
Each FA Link module transmits (broadcasts) the link device allocated in the
configuration to the remote station with its own station transmission timing; Each of
the other FA Link Modules stores the data in the corresponding area in the FA Link
module when it receives such data. Link data is sent out cyclically with the link data
in each local station updated at each cycle.
Cyclic transmission runs asynchronously to the execution of the sequence program
in the CPU module.
1024
W00001
0 BSET
64
L00001
M034
M034
F0517.VSD
BSET 0
10
W00021
M034
F0518.VSD
BSET 0