448
Host Link Commands
Section 6-5
6-5-3
HR AREA READ –– RH
Reads the contents of the specified number of HR 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.
6-5-4
PV READ –– RC
Reads the contents of the specified number of timer/counter PVs (present val-
ues), starting from the specified timer/counter.
Command Format
Response Format
An end code of 00 indicates normal completion.
The response will be divided when reading more than 30 words of data.
Parameters
Read Data (Response)
The number of present values specified by the command is returned in hexa-
decimal as a response. The PVs are returned in order, starting with the speci-
fied beginning timer/counter.
@
FCS
R
H
x 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 0099)
No. of words
(0001 to 0100)
Terminator
@
R
H
x 10
1
x 10
0
x 16
1
x 16
0
*
↵
x 16
3
x 16
2
x 16
1
x 16
0
FCS
Read data (1 word)
Header
code
Node No.
End code
Terminator
Read data (for number of words read)
@
FCS
R
C
x 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
No. of timers/counters
(0001 to 0512)
Beginning timer/counter
(0000 to 0511)
Header
code
Node No.
Terminator
@
FCS
R
C
x 10
1
x 10
0
x 16
1
x 16
0
*
↵
x 10
3
x 10
2
x 10
1
x 10
0
Terminator
Read data (1 word)
Read data (for number of words read)
End code
Header
code
Node No.
