Rockwell Automation 1203-SM1 SLC to SCANport Communication Module - Manual (Page 79)

SCANport Messaging B–13
Publication 1203–5.9 –– October 1996
The following table shows how the data type field is coded:
Data Type
Value
Description of Data Type of Parameter Value Field
1 16–bit word
2 16–bit unsigned integer
3 16–bit signed integer
4 Boolean
5 Short integer
6 Double integer
7 Long integer
8 Unsigned short integer
The descriptor bits are defined as follows:
This
descriptor bit:
Has the following definition when set to 1:
0 Not used. This bit should always be 0.
1 Supports ENUM strings.
2 Supports scaling.
3 Supports scaling links.
4 Read only parameter.
5
Monitor parameter (parameter is continuously updated
by SCANport device).
6 Supports extended precision scaling.
Scaling Formulas
Four scaling formulas are provided. Two scaling formulas are for
use with extended precision scaling and two are for normal scaling.
The decimal precision variable is always used to locate the decimal
point for a display by counting from the rightmost digit. In extended
precision scaling, the decimal precision variable is also used in the
scaling formula.