7 Buffer Memory
7.1 Buffer memory list
33
FX
3U
-64CCL User's Manual
1
Introduc
tion
2
Specifi
cation
and func
tion
3
Sy
stem
Configurati
on
4
Ins
tal
lation
5
W
iri
ng, S
tart-up
proced
ure
6
FX
3U
-64C
CL
settin
g (swi
tch
settin
g)
7
Buf
fer
M
emor
y
8
Program
Ex
ampl
e
9
Troubl
es
hooti
ng
A
Ve
rs
ion
Inform
ation
7. Buffer Memory
7.1
Buffer memory list
The table below provides a brief description and reference information for the 64CCL buffer memory.
→
For details on the buffer memory, refer to Section 7.2.
R/W : Read/write is possible
R
: Read only
*1.
Read/write is only possible when the expanded cyclic transmission is set to "single."
*2.
When writing to an area without assigned link points, writing is invalid. When reading from an area
without assigned link points, the reading operation results in "0" being read.
*3.
Only a value of "0" can be written and accepted.
BFM No.
Description
Read/Write
Reference
#0 to #7
FROM instruction: remote outputs (RY)
TO instruction: remote inputs (RX)
R/W
*1,*2
Subsection 7.2.1
#8 to #23
FROM instruction: remote registers (RWw)
TO instruction: remote registers (RWr)
R/W
*1,*2
Subsection 7.2.2
#24
Transmission rate, hardware test set value
R
Subsection 7.2.3
#25
Communication status
R
Subsection 7.2.4
#26
CC-Link model code
R
Subsection 7.2.5
#27
Set value of host station number
R
Subsection 7.2.6
#28
Number of occupied stations, expanded cyclic set value
R
Subsection 7.2.7
#29
Error code
R/W
*3
Subsection 7.2.8
#30
FX Series model code
R
Subsection 7.2.9
#31
Not available
-
-
#32,#33
Treatment of link data
R/W
Subsection 7.2.10
#34,#35
Not available
-
-
#36
Unit status
R
Subsection 7.2.11
#37 to #59
Not available
-
-
#60 to #63
Consistency control
R/W
Subsection 7.2.12
#64 to #77
The 224 remote inputs (RX000 to RX0DF)
These devices set the ON/OFF data to be sent to the master station when the TO
instruction (or direct buffer memory specification) is executed.
R/W
*2
Subsection 7.2.13
#78 to #119
Not available
-
-
#120 to #133
The 224 remote outputs (RY000 to RY0DF)
These devices read the ON/OFF data received from the master station when the
FROM instruction (or direct buffer memory specification) is executed.
R
Subsection 7.2.14
#134 to #175
Not available
-
-
#176 to #207
32 words (RWw00 to RWw1F) of remote registers
These devices set the word data to be sent to the master station when the TO
instruction (or direct buffer memory specification) is executed.
R
Subsection 7.2.15
#208 to #303
Not available
-
-
#304 to #335
32 words (RWr00 to RWr1F) of remote registers
These devices read the word data received from the master station when the FROM
instruction (or direct buffer memory specification) is executed.
R/W
*2
Subsection 7.2.16
#336 to #511
Not available
-
-
#512 to #543
Link special relay SB
The operator can check the data link status using the bit information of these
devices.
R
Subsection 7.2.17
#544 to #767
Not available
-
-
#768 to #1279
Link special register SW
The operator can check the data link status using the word information of these
devices.
R
Subsection 7.2.18
#1280-
Not available
-
-
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