862
10 MULTIPLE CPU HIGH-SPEED TRANSMISSION DEDICATED INSTRUCTIONS
10.1 Overview
Writable/readable devices
■Writable/readable device names
The following table shows the devices that can be written to/read from the Universal model QCPU in another CPU with the
multiple CPU high-speed transmission dedicated instruction.
SB, SW, SM, and SD include system information area.
Take care not to destroy the system information when writing data to the devices above with the D(P).DDWR
instruction of the multiple CPU high-speed transmission dedicated instruction.
Specification method of a device and writable/readable device range
There are two methods for specifying a device in another CPU: device specification and string specification.
They differ in writable/readable device range to another CPU.
■Device specification
The device specification is a method to directly specify a device in another CPU to be written/read.
In the device specification, data can be written/read within the device range of host CPU. For example, when data register in
host CPU is 12K points and data register in another CPU is 16K points, data can be written/read by 12K points from the start
of the data register in another CPU.
Category Type Device name Setting of target
device (:Settable,
:Settable with
conditions)
Remark
Internal user device Bit device X, Y, M, L, B, F, SB Requirements for the setting
• Digits are specified by 16 bits (4 digits).
• The start bit device is multiples of 16 (10H).
Word device T, ST, C, D, W, SW
Internal system device Bit device SM Requirements for the setting
• Digits are specified by 16 bits (4 digits).
• The start bit device is multiples of 16 (10H).
Word device SD
File register Word device R, ZR
[Program for device specification with the DP.DDWR instruction]
[Writable/readable device range in device specification]
X0
DP.DDWR H3E1 D0 D100 D200 M0
Directly specifies "D200", a
device in another CPU to be
written.
··
D0
D12287
D12288
D16383
D0
D12287
Data register
(12K points)
Data register
(16K points)
Host CPU Another CPU
Writable/readable
Not writable/not readable
To Next Page
Loading...
