User Manual

4–72 Using Unscheduled Messaging
Publication 1336 FORCE–5.18 ––March, 1999
If Comparison A Link is non-zero, the value specifies the source
parameter that is linked to the trend operand. If Comparison A Link
is zero, Operand X is specified by Comparison A Value.
If Comparison B Value is non-zero, the value specifies a constant
value to use as Operand Y. You need to specify the Comparison B
Value in internal drive units. If Comparison B Value is zero,
Operand Y is specified by Comparison B Link.
If Comparison B Link is non-zero, the value specifies the source
parameter that is linked to the trend operand. If Comparison B Link
is zero, Operand Y is specified by Comparison B Value.
Sampling Input Parameter specifies the source parameter number
that is linked to the Trend Input parameter.
Trend Output Parameter specifies the sink parameter number that the
Trend Output parameter is linked to.
Example
In this example, the information for Trend 1 is read.
10
N7:10
23456789
N7:90
PLC MSG
Write File
PLC MSG
Read File
Data Format
4096
4096 0
3
15
4098
4098 500 400 1 6 0 0
N7:100
0 101101 4096 387
All Info
(continued)