User guide
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7 DM Link 1:1Communication Format
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DM Link Communication
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