
B-62714EN/04 OPERATION 2.LCD-MOUNTED TYPE 16i/18i/21i-A, Power Mate i-D/H
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DI/DO data allocation of the slave function
DO data allocation
[DO ADDRESS] DO data from the local slave station to
the master station
↑
[DO SIZE]
↓
DI data allocation when DI/DO data transfer is set (when DI/DO MAP MODE = 0)
[DI ADDRESS] DI data from the master station to the
local slave station
↑
[DO SIZE]
↓
DI data allocation when global I/O transfer is set (when DI/DO MAP MODE = 1)
[DI ADDRESS]
DI data from the master station to the
local slave station
↑
[DO SIZE]
↓
+[DI SIZE]× 1
DO data from slave station #1 to the
master station
+[DI SIZE]× 2
DO data from slave station #2 to the
master station
+[DI SIZE]× 3
DO data from slave station #3 to the
master station
::
+[DI SIZE]×
[STATION NO]
Not used. (The area for the local slave
station is not used. The area can be
used for other purposes such as a DO
data output area for the local station.)
::
+[DI SIZE]×
[MAX SLAVE NO]
DO data from slave station #[MAX
SLAVE NO] to the master station
Example:
When [STATION NO] = 2, [MAX SLAVE NO] = 3, [DI
ADDRESS] = R0300, and [DI SIZE] = 10 for a slave station
performing global I/O transfer, DI data is allocated as follows:
R0300
DI data from the master station to
slave station #2
R0310
DO data from slave station #1 to the
master station
R0320
Not used
R0330
DO data from slave station #3 to the
master station
NOTE
For global I/O transfer, note the following when
allocating DI data:
- [DI/DO DATA SIZE] must match the maximum size
of other slaves.
- The total DI data area size required is [DI/DO
DATA SIZE] × [MAX SLAVE NO].