User`s manual

5 - 46
5
5-8 Transfer of any X-axis block when top address of special
I/O area is set to 49000
The ladder program shown on pages 5-47 to 5-49 shows a method for reading and writing any block data
on the X-axis from any address in file 1, and writing to any block data. (On the example ladder program on
the following page, 32 items of X-axis block data written from 000000 to 003777 of file 1 are written to PS,
and 32 items of X-axis block data are read from 000000 to 003777 of file 1.)
To read/write from any registers in file 1 to any block data, the ladder program must be changed. (The
read/write areas and the read/write block Nos., etc. of file 1 must be changed.)
The Y-, Z- and A-axes can also be read/written in the same way by changing the ladder program. (The
read/write areas, read/write block Nos., read/write relays, monitor block Nos., etc. of file 1 must be
changed.
The conceptual diagram below shows an instance where block data is read/written with 003000 to
004777 of file 1 as the area of block Nos.5 to 20. Transfer such as this is possible by re-reprogramming
the ladder program shown on the next page.
Block data file 1
03000 to 04777
(00000 to 03777 in
ladder example)
Shared RAM
(32 k bytes)
Output relay
(16 bytes/axis)
Total 64 bytes
Write data area
for block transfer
(common to each axis)
64 bytes
0 to 31 in
ladder
example
Read data area
for block transfer
(common to each axis)
64 byte
Input relay
(16 bytes/axis)
Total 64 bytes
X-axis block 5
X-axis block 20
Refresh area top
address 49000
X-axis block 5
X-axis block 20
Input relay
(16 bytes/axis)
Total 64 bytes
Output relay
(16 bytes/axis)
Total 64 bytes
Write data area
for block transfer
(common to each axis)
64 bytes
Read data area
for block transfer
(common to each axis)
64 bytes
Present position,
error code, status,
etc.
Parsing of operation
instructions, parsing
of block data transfer
instructions, etc.
0 to 31 in
ladder
example
PC side data memory JW-12PS/14PS side
I/O refresh
to
to