7 dm link 1:1communication format, 1 read, Dm link 1:1communication format – IDEC High Performance Series User Manual
Page 595: Read, 7dm link 1:1communication format, External device setup manual
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7 DM Link 1:1Communication Format
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DM L
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Communica
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External Device Setup Manual
7
DM Link 1:1Communication Format
With DM Link 1:1 communication, the following communication format is used.
•
Command (Response)
Read
Write
Transmission Control
Clear
•
Event
Event Transmission
7.1
Read
This command is used by the external device to read the MICRO/I or Touch data memory. One command can read a maximum of 255
words of data.
7.1.1
Command
Format
Detailed description
Command
Code
Description
Bytes
ENQ
05h
Command start
1
R
52h
Read Command
1
DM Address
Starting DM address for read.
This is expressed as the ASCII code of the hexadecimal value of the address.
4
Words
Number of words to read
The hexadecimal value expressed using ASCII code.
2
BCC
Only required when 'with BCC' is set.
Exclusive OR (HEX) from ENQ to before BCC converted to ASCII code.
2
CR
0Dh
End
1