Rockwell Automation 1203-SM1 SLC to SCANport Communication Module - Manual (Page 89)

SCANport Messaging B–23
Publication 1203–5.9 –– October 1996
Scattered Read
The Scattered Read message lets you request the values of multiple
parameters, not necessarily starting from parameter 1. The following
is an example of this request:
Service=Get Attribute Scattered
Internal A–B Vendor Specific Class
Instance
Attribute
Data Length=12 Bytes
M0:e.000
M0:e.001
M0:e.002
M0:e.003
M0:e.004
0032
0093
0000
0000
000c
Value
Scattered Read
Service=Get Attribute Scattered
Internal A–B Vendor Specific Class
Instance
Attribute
Data Length=12 Bytes
M1:e.100
M1:e.101
M1:e.102
M1:e.103
M1:e.104
0032
0093
0000
0000
000c
Value
Response
Parameter 1 M0:e.005 0001
Always 0
Parameter 2
Always 0
Parameter 3
M0:e.006
M0:e.007
M0:e.008
M0:e.009
0000
0002
0000
0003
Always 0 M0:e.010 0000
Parameter 1*
Value
Parameter 2*
M1:e.105
M1:e.106
M1:e.107
0001
0078
0002
Value
Parameter 3*
Value
M1:e.108
M1:e.109
M1:e.110
0000
0003
0000
Note: The Scattered Read can continue
on in this pattern for up to 47 parameters.
Note: The Scattered Read can continue on
in this pattern for up to 47 parameters.
* If an error has occurred while reading to this
parameter, the MSB of the parameter number
will be set to 1 and the value field will contain
an error code (see the error table at the end of
this appendix).