Omron C200HX Operation Manual page 485

Host Link Commands
10-3-6 DM AREA READ –– RD
Command Format
1
x 10 x 10
@
Node no.
Response Format
1
x 10 x 10
@
Node no.
Limitations
PC Settings
Execution Conditions
End Codes
Reads the contents of the specified number of DM words, starting from the spe-
cified word.
0 3 2
x 10 x 10 x 10
R D
Header Beginning word
code (0000 to 9999)
Note To specify 10,000 words, input 0000 for the number of words to be read.
0 1 0
x 16 x 16 x 16
R D
Header End code
code
Read data (for number of words read)
The text portion of the response's first frame can contain up to 30 words. If more
than 30 words are read, the data will be returned in multiple frames.
In the second and later frames, the text portion of the response can contain up to
31 words.
DM 6656 to DM 6999 do not exist, but an error will not occur if you try to read
these words. Instead, "0000" will be returned as a response. Likewise, "0000"
will be returned for extension DM words (DM 7000 to DM 9999) if extension DM
hasn't been allocated in the UM area.
The INITIALIZE and ABORT commands can be sent instead of the delimiter for
multiple responses for this command. If other commands are sent, they will be
treated the same as delimiters.
PC Mode
RUN MONITOR
OK
Commands
Single
OK
An end code of 14 (format error) will be returned if the length of the command is
incorrect and an end code of 15 (entry number data error) will be returned if the
specified words exceed the data area boundaries or aren't specified in BCD.
End code
00 Normal completion
13 FCS error
14 Format error
15 Entry number data error
18 Frame length error
A3 Aborted due to FCS error in transmit data
A8 Aborted due to frame length error in transmit data
1 0 3 2 1
x 10 x 10 x 10 x 10 x 10
No. of words
(0001 to 10000)
(see note)
3 2 1 0
x 16 x 16 x 16
Read data (1 word)
PROGRAM Write-protected
OK OK
Multiple
---
Contents
Section 10-3
0
 ↵
FCS Terminator
 ↵
FCS Terminator
UM Area
Read-protected
OK OK
Responses
Single Multiple
OK OK
467