10 MULTIPLE CPU HIGH-SPEED TRANSMISSION DEDICATED INSTRUCTIONS
10.1 Overview
863
10
■String specification
The string specification is a method to specify a device in another CPU to be written/read by character string.
In the string specification, data can be written to/read from all device ranges of another 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 16K points from the start of the data register in another CPU.
The following explains precautions for string specification.
• The number of characters that can be specified is 32.
• Whether "0" is appended at the start of the device number or not, the devices are processed as the same.
For example, both "D1" and "D0001" are processed as "D1".
• Whether a device is specified by upper case character or lower-case character, they are processed as the
same. For example, both "D1" and "d1" are processed as "D1".
• If a device not existing in another CPU is specified by a character string, the instruction will be completed
abnormally.
[Program for string specification with the DP.DDWR instruction]
[Writable/readable device range in string specification]
X0
DP.DDWR H3E1 D0 D100 "D200" M0
Specifies "D200", a device in another CPU
to be written by character string.
·
·
D0D0
D12287
D16383
Data register
(12K points)
Data register
(16K points)
Host CPU Another CPU
Writable/readable
To Next Page
Loading...
