Rockwell Automation 1203-SM1 SLC to SCANport Communication Module - Manual (Page 74)

SCANport Messaging B–8
Publication 1203–5.9 –– October 1996
Read Parameter Value
The Read Parameter Value message lets you request the value for a
specific parameter. The following is an example of this request:
Service=Get Attribute Single
Parameter Class
Instance=Parameter #5
Attribute=Value
Data Length=0
M0:e.000
M0:e.001
M0:e.002
M0:e.003
M0:e.004
000e
000f
0005
0001
0000
Value
Read Parameter Value
Service=Get Attribute Single
Parameter Class
Instance=Parameter #5
Attribute=Value
Data Length=2 Bytes
M1:e.100
M1:e.101
M1:e.102
M1:e.103
M1:e.104
000e
000f
0005
0001
0002
Value
Response
Data=Value of 7 M1:e.105 0007
Figure B.5 shows an example of a Read Parameter Value request.
The value of parameter number 5 is 7.
Figure B.5
Example of Read Parameter Value
address 0 1 2 3 4 5 6 7 8 9
N10:0 000e 000f 0005 0001 0000 0000 0000 0000 0000 0000
address 0 1 2 3 4 5 6 7 8 9
N11:0 000e 000f 0005 0001 0002 0007 0000 0000 0000 0000