513
Analog I/O Slave Unit (input) Functions
Section 11-4
11-4-4 Peak/Bottom Hold
Description
Peak/bottom hold is used to hold the maximum (peak) value or minimum (bot-
tom) value of the analog input value. When the Hold Flag (output) allocated in
the OUT Area turns ON, the hold function starts, searching for the peak or
bottom value until the Hold Flag turns OFF. (The peak/bottom value is
refreshed when the Hold Flag turns OFF.) The comparator function can be
used to compare the peak or bottom values allocated as analog data. (Refer
to details on the comparator function.)
■
Example of Bottom Hold
Note
A delay in network transmission time will occur from the time the Hold Flag
turns ON (or OFF) in the Master Unit’s ladder program until notification of the
flag’s status is actually sent to the Slave. Therefore, even when the Hold Flag
is ON, the first analog data transmitted to the Master Unit after the CPU Unit
power is turned ON may be the data from when the Hold Flag was OFF. To
collect peak/bottom hold data using the Hold Flag at the Master Unit, config-
ure a ladder program that considers the transmission delay when the Hold
Flag is turned ON, and enables only the peak/bottom hold values after a fixed
time lag.
Setting Using the CX-Integrator
1,2,3...
1.
Turn ON the power supply to the CompoNet Slave Unit.
2.
Double-click the icon of the Slave Unit to set in the Network Configuration
Window to open the Configuration Window. (Alternatively, right-click the
icon and select
Parameters - Edit
from the pop-up menu.)
3.
Select the Tab Page for the input where Peak/Bottom is to be set, and se-
lect
Peak/Bottom
under the
Function Choice
heading.
ON
OFF
Analog input value
The bottom value will
be updated.
Hold value
Previous value
Hold Flag
Bottom hold value
Hold function starts
Hold function stops
Summary of Contents for CRT1 - 10-2009
Page 1: ...Cat No W457 E1 07 CompoNet Slave Units and Repeater Unit CRT1 Series OPERATION MANUAL...
Page 2: ......
Page 3: ...CRT1 Series CompoNet Slave Units and Repeater Unit Operation Manual Revised October 2009...
Page 4: ...iv...
Page 6: ...vi...
Page 10: ...x...
Page 16: ...xvi...
Page 24: ...xxiv Conformance to EC Directives 6...
Page 386: ...362 Units with Connectors Section 6 7...
Page 414: ...390 Temperature Input Units Section 7 5...
Page 430: ...406 Expansion Unit Specifications Section 8 2...
Page 494: ...470 Bit Slave Units with Compact Connectors Section 9 5...
Page 501: ...477 Repeater Unit Section 10 2 Dimensions 42 3 50 3 1 27 5 95 mm...
Page 502: ...478 Repeater Unit Section 10 2...
Page 508: ...484 CX Integrator Section 11 1...
Page 509: ...485 CX Integrator Section 11 1...
Page 602: ...578 Temperature Input Unit Functions Section 11 6...
Page 614: ...590 Device Maintenance Section 12 3...
Page 664: ...640 I O Power Supply Current Appendix E...
Page 672: ...648 Index...
Page 674: ...650 Revision History...