Rockwell Automation 1336T ControlNet Frn1.02 Rev 1.5 - Manual (Page 203)

Chapter
8
Publication 1336 FORCE–5.18 ––March, 1999
Using the Trend Features
Trending is a diagnostic tool that you can use to capture and retain an
input parameter data value until a trigger condition occurs. The
FORCE has the capacity to setup and monitor up to 4 parameters,
Trend 1 through Trend 4. With trending, you program the:
•
Parameter to sample
•
Trigger condition
•
Sampling rate
•
Quantity of samples to be taken after the trigger occurs
•
Whether trending is to occur one time or continuously
Parameters used by trending are shown in the table below:
Description
Trend 1
Parameter
Number:
Trend 2
Parameter
Number
Trend 3
Parameter
Number
Trend 4
Parameter
Number
Source 454 464 474 484
Variable X Source 455 465 475 485
Variable Y Source 456 466 476 486
Operator (comparison type) 457 467 477 487
Sampling Rate 458 468 478 488
Quantity of Post-Trigger Samples 459 469 479 489
Mode 460 470 480 490
Select 461 471 481 491
Status 462 472 482 492
Output 463 473 483 493
Identify the number of the parameter you want to sample as follows:
If you are programming
Trend #:
Then enter the number of the parameter to be
sampled in:
1 454
2 464
3 474
4 484
Setting Up Trending
Selecting the Parameter to
Sample