Rockwell Automation 1336T PLC Comm. Adapter, Series B, FRN 2.xx-3.xx User Manual
Page 247
9–5
Publication 1336 FORCE–5.13 –– September, 1998
The following operators are available:
This Operator:
Compares:
GT
(Greater Than)
The data value for Operand X to the data value for Operand
Y. If the comparison is true, the trend is triggered.
LT
(Less Than)
The data value for Operand X to the data value for Operand
Y. If the comparison is true, the trend is triggered.
EQ
(Equal)
The data value for Operand X to the data value for Operand
Y. If the comparison is equal, the trend is triggered.
NE
(Not Equal)
The data value for Operand X to the data value for Operand
Y. If the comparison is not equal, the trend is triggered.
AND
Operand X
➀
to a 16–bit mask value in Operand Y
➁
. If all the
bit(s) in Operand X corresponding to the the bit(s) set in
Operand Y are 1’s, then the trigger condition is true.
NAND
(Negated AND)
Operand X
➀
to a 16–bit mask value in Operand Y
➁
. If all the
bit(s) in Operand X corresponding to the bit(s) set in Operand
Y are 0’s, then the trigger condition is true.
OR
Operand X
➀
to a 16–bit mask value in Operand Y
➁
. If any
bit(s) in Operand X corresponding to the bit(s) set in Operand
Y are 1’s, then the trigger condition is true.
NOR
(Negated OR)
Operand X
➀
to a 16–bit mask value in Operand Y
➁
. If any
bit(s) in Operand X corresponding to the bit(s) set in Operand
Y are 0’s, then the trigger condition is true.
➀
Operand X is generally linked to a 16–bit parameter such as Logic
Status.
➁
Operand Y specifies the bit(s) to check in Operand X.
To set the trigger condition:
1. Select the Operand X parameter for the appropriate trend
(parameter number 455, 465, 475, or 485).
2. Enter a constant or a link to another parameter to set up the first
part of the trigger point condition.
3. Select the Operator parameter for the appropriate trend
(parameter number 457, 467, 477, or 487).
4. Select the appropriate operator.
5. Select the Operand Y parameter for the appropriate trend
(parameter number 456, 466, 476, or 486).
6. Select the second parameter or enter the appropriate value.
You can change any of these parameters while the trend is active.