User guide

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8 DM Link 1:N Communication Format
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DM Link Communication
External Device Setup Manual
8.1.2 Response
Format: Normal response
Format: Error response
Detailed description: Normal response
Command Code Description Bytes
STX 02h Response start 1
Station Number DM Link Station Number expressed in ASCII. 2
R 52h Read response 1
DM address DM address to start reading from
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
Data DM Address Data
The hexadecimal value expressed using ASCII code.
The words are in order from the lowest address.
4 x N
N is the number of
words
ETX 03h Only added when 'with BCC' is set.
End of the response data.
1
BCC Only added when 'with BCC' is set.
Exclusive OR (HEX) from ENQ to before BCC converted to ASCII
code.
2
CR 0Dh End 1
Detailed description: Error response
Command Code Description Bytes
NAK 15h Command was not received correctly. 1
Station Number DM Link Station Number expressed in ASCII. 2
Error Code Refer to 10 Error Processing. 1
CR 0Dh End 1