YOKOGAWA F3LP32-0N, User Manual

Page: 78 / 104

4-4
IM 34M06H43-02E 2nd Edition : Sep.30, 2019-00
4.1.2 Link Refresh Range
Link refresh applies only to those link relays and link registers used in the
instructions in a program.

Link relay (L)
- If a link relay (L) is directly represented, the word that includes the link relay will
be refreshed.
- If the link relay (L) is indexed, the word that includes the link relay with the index
register set to 0 will be refreshed.
F0515.VSD
L00003 L00035
V02
L00001-L00016 which contains L00003 will be refreshed
L00033-L00048 which contains L00035 will be refreshed
Figure 4.1.5 Link Relay Refresh Range

Link register (W)
- For an instruction which handles word data, the link register (W) specified by the
instruction will be refreshed.
- For an instruction which handles long word data or IEEE single-precision
floating point data, the link register (W) specified by the instruction and the next
higher link register (W) will be refreshed.
- For an instruction which handles double-long word data or IEEE double-
precision floating point data, the link register (W) specified by the instruction and
the next three higher link registers (W) will be refreshed.
- For an instruction involving multiple words, the number of words in the
calculation range will be refreshed if the calculation range is specified with a
constant. However, only the first word in the calculation range will be refreshed
if the calculation range is specified with a register.
MOV W00012 D00001
M035
MOV D00034 W00030
W00061 D00001
M035
W00051 BMOV 5
V03
D00051
M035
MOV
M035
F0516.VSD
W00012 will be refreshed
W00030 and W00031 will be refreshed
W00051-W00055 will be refreshed
W00061 will be refreshed
L
Figure 4.1.6 Link Register Refresh Range