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2
EXP. COMPARISON FUNCTIONS
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Screens appearing when before value comparison is selected
Before-value-comparison-specific measurement screens appear.
Also, the Comparison Setting menu is dedicated.
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Before value renewal condition
The previous hold value used for Before Value Comparison is renewed under the following conditions:
1) When the hold is canceled (except when the Before Value Regulation is exceeded)
2) When the Before Value in the Comparison Setting menu is changed by inputting a value in a
similar manner to set values.
This is convenient for inputting a predetermined value at the first measurement, etc., and for
changing the Before Value as desired.
3) When an input is made by special-purpose input commands through the communication
interface (RS232C / CC-Link / DeviceNet)
■
Difference HI/LO limit comparisons
You can set Difference value-HI Limit and Difference value-LO Limit to compare the difference
between the previous hold value and present hold value.
- Difference value-HI Limit-99999 - 99999
Initial value: 1000
- Difference-LO Limit
-99999 - 99999
Initial value: -1000
When Before Value Comparison is made, judgments are made under the following conditions, and
respective results are output.
- HI Limit (HI)
ON condition:
Hold Value (indicated value) > HI Limit
OFF condition:
Hold Value (indicated value)
≦
HI Limit
- LO Limit (LO)
ON condition:
Hold Value (indicated value) < LO Limit
OFF condition:
Hold Value (indicated value)
≧
LO Limit
- Difference-HI Limit (DF-HI)
ON condition:
Difference value > Difference value-HI Limit
OFF condition:
Difference value
≦
Difference value-HI Limit
- Difference-LO Limit (DF-LO)
ON condition:
Difference value < Difference value-LO Limit
OFF condition:
Difference value
≧
Difference value-LO Limit
- OK
ON condition:
All of HI, LO, DF-HI, and DF-LO are OFF.
OFF condition:
Any of HI, LO, DF-HI, and DF-LO is ON.
* The Hysteresis setting is not reflected in the Difference-HI/LO Limit comparison operation.
* If the Comparison Timing condition is not met, the comparison result of the value targeted for the
Comparison Timing turns OFF.
* In Before Value Comparison, HH Limit/LL Limit comparisons become ineffective.
* OK is displayed each on the LCD screen as the hold value is OK, and the difference value is OK.
Summary of Contents for F377A
Page 1: ...18JUL2012REV 3 06 DIGITAL INDICATOR F377A OPERATION MANUAL ...
Page 5: ...What is RoHS 4 M E M O ...
Page 12: ...11 11 STANDARD ...
Page 13: ...12 12 M E M O ...
Page 94: ...93 93 EXPANSION ...
Page 95: ...94 94 M E M O ...
Page 97: ...Expansion Function 96 M E M O ...
Page 152: ......