Rockwell Automation 1203-SM1 SLC to SCANport Communication Module User Manual
Page 78
SCANport Messaging
B–12
Publication 1203–5.9 –– October 1996
Figure B.8 shows an example of a Read Full Parameter request. This
message reads all the information about parameter 7 from the
SCANport device. It is encoded as shown in the following tables.
You should note that the data is not word aligned.
Figure B.8
Example of Read Full Parameter
address 0 1 2 3 4 5 6 7 8 9
N10:0 0001 000f 0007 0000 0000 0000 0000 0000 0000 0000
address 0 1 2 3 4 5 6 7 8 9
N11:0 0001 000f 0007 0000 0035 0064 6400 0200 1002 6341
N11:10 6563 206c 6954 656d 3120 2020 2020 5304 6365 0073
N11:20 0000 ea60 03e8 0001 000a 0001 0000 0000 0000 0000
N11:30 0000 0001 0000 0000 0000 0000 0000 0000 0000 0000
address 0 1 2 3 4 5 6 7 8 9
N11:0 \00\01 \00\0F \00\07 \00\00 \00 5 \00 d d \00 \02\00 \10\02 c A
N11:10 e c l i T e m 1 S \04 c e \00 s
N11:20 \00\00 \EA ‘ \03\E8 \00\01 \00\0A \00\01 \00\00 \00\00 \00\00 \00\00
N11:30 \00\00 \00\01 \00\00 \00\00 \00\00 \00\00 \00\00 \00\00 \00\00 \00\00
The following table shows the starting address of individual
attributes that can be read using the Read Full Parameter request.
Attribute
Starting Address
Size (Bytes)
Description
1 (01h)
N11:5
2
Parameter value
2 (02h)
N11:6 (Lo Byte)
1
Link path size (always 0)
4 (04h)
N11:6 (Hi Byte)
2
Descriptor –– See descriptor table
5 (05h)
N11:7 (Hi Byte)
1
Data type –– See Data Types table
6 (06h)
N11:8 (Lo Byte)
1
Parameter value data size in bytes
7 (07h)
N11:8 (Hi Byte)
17
Parameter name string: Accel Time 1
The Hi byte of N11:8 is the number of characters in
the string and is always 16 (10H)
8 (08h)
N11:17
5
Units string: Secs
The Lo byte of N11:17 is the number of characters
in the string and is always 4 (04H)
9 (09h)
N11:19 (Hi Byte)
1
Help string (always 0 indicating no help string)
10 (0Ah)
N11:20
2
Minimum value
11 (0Bh)
N11:21
2
Maximum value
12 (0Ch)
N11:22
2
Default Value
13 (0Dh)
N11:23
2
Scaling multiplier –– see scaling formula
14 (0Eh)
N11:24
2
Scaling divisor –– see scaling formula
15 (0Fh)
N11:25
2
Scaling base –– see scaling formula
16 (10h)
N11:26
2
Scaling offset –– see scaling formula
17 (11h)
N11:27
2
Multiplier link –– parameter containing multiplier
value
18 (12h)
N11:28
2
Divisor link –– parameter containing divisor value
19 (13h)
N11:29
2
Base link –– parameter containing base value
20 (14h)
N11:30
2
Offset link –– parameter containing offset value
21 (15h)
N11:31 (Lo Byte)
1
Decimal precision (see scaling formula)