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Host Link Commands Section 6-5
6-5 Host Link Commands
This section explains the commands that can be issued from the host com-
puter to the PC.
6-5-1 IR/SR AREA READ –– RR
Reads the contents of the specified number of IR and SR words, starting from
the specified word.
Command Format
Response Format An end code of 00 indicates normal completion.
Note The response will be divided when reading more than 30 words of data.
Parameters Read Data (Response)
The contents of the number of words specified by the command are returned
in hexadecimal as a response. The words are returned in order, starting with
the specified beginning word.
6-5-2 LR AREA READ –– RL
Reads the contents of the specified number of LR words, starting from the
specified word.
Command Format
Response Format An end code of 00 indicates normal completion.
Parameters Read Data (Response)
The contents of the number of words specified by the command are returned
in hexadecimal as a response. The words are returned in order, starting with
the specified beginning word.
@
x 10
1
x 10
0
x 10
3
x 10
2
RR
x 10
1
x 10
0
x 10
3
x 10
2
x 10
1
x 10
0
FCS
*
↵
Node
No.
Header
code
Beginning word
(0000 to 0255)
No. of words
(0000 to 0256)
Terminator
@ RRx 10
1
x 10
0
x 16
1
x 16
0
x 16
3
x 16
2
x 16
1
x 16
0
FCS
*
↵
End code Read data (1 word)
Read data (for number of words read)
TerminatorNode
No.
Header
code
@
FCS
RLx 10
1
x 10
0
x 10
3
x 10
2
*
↵
x 10
1
x 10
0
x 10
3
x 10
2
x 10
1
x 10
0
Node No. Header
code
Beginning word
(0000 to 0063)
No. of words
(0001 to 0064)
Terminator
FCS
@
RLx 10
1
x 10
0
x 16
1
x 16
0
*
↵
x 16
3
x 16
2
x 16
1
x 16
0
Node
No.
Header
code
End code Read data (1 word)
Read data (for number of words read)
Terminator
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