Rockwell Automation 5370-CVIM2 Module - Manual (Page 484)

5 Chapter Chapter 9
Discrete I/O Assignments
9–21
Note that Module Ready is high only when the system is online.
Figure 9.14 also shows the relationship between the trigger leading edge and
the strobe, data valid, tool fail, and fail signals, when the output duration has
been set to 0ms and thereby selects non–pulsed output. In this case, the last
three appear as changes in signal levels. This will occur if you select
0 msec
in the appropriate Time boxes in the Discrete I/O Edit panel.
Figure 9.14 Example: Timing Relationships for Non–Pulsed Outputs
MODULE
READY
STROBE
TRIGGER
(Input)
MODULE
READY
Trigger
pulse #1
Trigger
pulse #2
NON–PULSED I/O TIMING
** *
** * ** *
FAIL
TOOL
FAIL
MODULE READY goes high when system is placed
online, and stays high until it is placed offline.
*Acquisition time: 34 – 51ms, for two–field resolution; 17 – 34ms for one–field resolutions.
** Analysis time.
. . . or low if no
tool’s fail range
limit is exceeded. FAIL will go high if
any tool’s fail range
limit is exceeded . . .
. . . or low if the
tool’s fail range limit
is not exceeded. TOOL FAIL will go high
if a specific tool’s fail
range limit is exceeded . . .