YOKOGAWA SMARTDAC+ GX10 User manual

User’s
Manual
IM 04L51B01-06EN
4th Edition
Model GX10/GX20/GP10/GP20/GM10
Log Scale (/LG)
User’s Manual

i
IM 04L51B01-06EN
Introduction
Thank you for purchasing the SMARTDAC+ Series GX10/GX20/GP10/GP20/GM10
(hereafter referred to as the recorder, GX, GP, or GM).
This manual explains the Log scale (/LG option) function of the GX, GP, and GM.
Although the display of GX20 is used in this manual, GX10/GP10/GP20 can be
operated similarly. Moreover, for the GM10, the same content can be displayed on a
Web browser.
To ensure correct use, please read this manual thoroughly before beginning operation.
For details on other settings, procedures, and communication features, read also the
following user’s manuals.
• Model GX10/GX20/GP10/GP20 Paperless Recorder User’s Manual (IM 04L51B01-01EN)
• Data Acquisition System GM User’s Manual (IM 04L55B01-01EN)
• Model GX10/GX20/GP10/GP20/GM10 Communication Command User’s Manual (IM
04L51B01-17EN)
The following manuals are provided for the GX/GP.
• Paper Manuals
Manual Title Manual No. Description
Model GX10/GX20/GP10/GP20
Paperless Recorder
First Step Guide
IM 04L51B01-02EN Explains the basic operations of the GX/GP.
• Downloadable Electronic Manuals
You can download the latest manuals from the following website.
www.smartdacplus.com/manual/en/
Model Manual Title Manual No. Description
GX/GP Model GX10/GX20/GP10/GP20
Paperless Recorder
First Step Guide
IM 04L51B01-02EN This is the electronic version of the paper manual.
Model GX10/GX20/GP10/GP20
Paperless Recorder
User’s Manual
IM 04L51B01-01EN Describes how to use the GX/GP. The communication
control commands and some of the options are excluded.
Model GX10/GX20/GP10/GP20
Advanced Security Function (/AS)
User’s Manual
IM 04L51B01-05EN Describes how to use the advanced security function (/
AS option).
GM GM Data Acquisition System
First Step Guide
IM 04L55B01-02EN This is the electronic version of the paper manual.
GM Data Acquisition System
User’s Manual
IM 04L55B01-01EN Describes how to use the GM. The communication
control commands and some of the options are excluded.
GM Data Acquisition System
Advanced Security Function (/AS)
User’s Manual
IM 04L55B01-05EN Describes how to use the advanced security function (/
AS option).
GX/GP
GM
Model GX10/GX20/GP10/GP20/GM10
Communication Commands
User’s Manual
IM 04L51B01-17EN Describes how to use command control communication
functions.
SMARTDAC+ STANDARD
Universal Viewer
User’s Manual
IM 04L61B01-01EN Describes how to use Universal Viewer, which is a
software that displays GX/GP/GM measurement data
files.
SMARTDAC+ STANDARD
Hardware Configurator
User’s Manual
IM 04L61B01-02EN Describes how to use the PC software for creating setting
parameters for various GX/GP/GM functions.
Model GX10/GX20/GP10/GP20/GM10
Multi-batch Function (/BT)
User’s Manual
IM 04L51B01-03EN Describes how to use the multi-batch function (/BT
option).
Model GX10/GX20/GP10/GP20/GM10
Log Scale (/LG)
User’s Manual
IM 04L51B01-06EN Describes how to use the log scale (/LG option).
Model GX10/GX20/GP10/GP20/GM10
EtherNet/IP Communication (/E1)
User’s Manual
IM 04L51B01-18EN Describes how to use the communication functions
through the EtherNet/IP (/E1 option).
Model GX10/GX20/GP10/GP20/GM10
WT Communication (/E2)
User’s Manual
IM 04L51B01-19EN Describes how to use WT communication (/E2 option).
Model GX10/GX20/GP10/GP20/GM10
OPC-UA Server (/E3)
User’s Manual
IM 04L51B01-20EN Describes how to use the OPC-UA server function (/E3
option).
Model GX10/GX20/GP10/GP20/GM10
SLMP Communication (/E4)
User’s Manual
IM 04L51B01-21EN Describes how to use SLMP communication function (/
E4 option).
Model GX10/GX20/GP10/GP20/GM10
Loop Control Function, Program Control
Function (/PG Option)
User’s Manual
IM 04L51B01-31EN Describes how to use the Loop Control Function,
Program Control Function (/PG Option).
Continued on the next page
4th Edition: May 2020 (YK)
All Rights Reserved, Copyright © 2014, Yokogawa Electric Corporation

ii IM 04L51B01-06EN
Model Manual Title Manual No. Description
GX/GP DXA170
DAQStudio
User’s Manual
IM 04L41B01-62EN Describes how to create custom displays (/CG option).
Notes
• The contents of this manual are subject to change without prior notice as a result of
continuing improvements to the instrument’s performance and functions.
• Every effort has been made in the preparation of this manual to ensure the accuracy of its
contents. However, should you have any questions or find any errors, please contact your
nearest YOKOGAWA dealer.
• Copying or reproducing all or any part of the contents of this manual without the
permission of YOKOGAWA is strictly prohibited.
QR Code
The product has a QR Code pasted for efficient plant maintenance work and asset
information management.
It enables confirming the specifications of purchased products and user’s manuals.
For more details, please refer to the following URL.
https://www.yokogawa.com/qr-code
QR Code is a registered trademark of DENSO WAVE INCORPORATED.
Trademarks
• SMARTDAC+ is registered trademarks of Yokogawa Electric Corporation.
• Microsoft and Windows are registered trademarks or trademarks of Microsoft Corporation
in the United States and/or other countries.
• Adobe and Acrobat are registered trademarks or trademarks of Adobe Systems
Incorporated.
• Company and product names that appear in this manual are registered trademarks or
trademarks of their respective holders.
• The company and product names used in this manual are not accompanied by the
registered trademark or trademark symbols (® and ™).
Using Open Source Software
This product uses open source software.
For details on using open source software, see Regarding the Downloading and Installing
for the Software, Manuals and Labels (IM 04L61B01-11EN).
Revisions
May 2014 1st Edition
December 2014 2nd Edition
June 2017 3rd Edition
May 2020 4th Edition

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IM 04L51B01-06EN
Recorder Versions Described in This Manual
The contents of this manual correspond to the GX/GP with release number 4 (see the
STYLE S number) and style number 3 (GX10/GX20/GP10), style number 4 (GP20) (see the
STYLE H number) and the GM10 with release number 4 (see the STYLE S number) and
style number 1 (see the STYLE H number).
Edition Product Explanation
1 GX/GP: Version 2.01 and later —
2 GX/GP: Version 2.01 and later Describes the GM.
GM: Version 2.02 and later
3 GX/GP: Version 4.01 and later Support for Release number 4.
GM: Version 4.01 and later
4 GX/GP: Version 4.08 and later Support for style up (H: 3 (GX10/GX20/GP10), H: 4
(GP20)).
GM: Version 4.07 and later —

iv IM 04L51B01-06EN
Conventions Used in This Manual
Unit
KDenotes 1024. Example: 768K (file size)
kDenotes 1000.
Markings
Improper handling or use can lead to injury to the user or damage to
the instrument. This symbol appears on the instrument to indicate that
the user must refer to the user’s manual for special instructions. The
same symbol appears in the corresponding place in the user’s manual
to identify those instructions. In the manual, the symbol is used in
conjunction with the word “WARNING” or “CAUTION.”
WARNING Calls attention to actions or conditions that could cause serious or fatal
injury to the user, and precautions that can be taken to prevent such
occurrences.
CAUTION Calls attention to actions or conditions that could cause light injury
to the user or cause damage to the instrument or user’s data, and
precautions that can be taken to prevent such occurrences.
Note Calls attention to information that is important for the proper operation
of the instrument.
Reference Item
Reference to related operation or explanation is indicated after this
mark.
Example: section 4.1
Conventions Used in the Procedural Explanations
Bold characters Denotes key or character strings that appear on the screen.
Example: Volt
Aa# 1Indicates the character types that can be used.
a symbol,
uppercase alphabet,
numbers
A
1
lowercase alphabet, #
Procedure Carry out the procedure according to the step numbers. All procedures
are written with inexperienced users in mind; depending on the
operation, not all steps need to be taken.
Explanation gives information such as limitations related the procedure.
Explanation
Path Indicates the setup screen and explains the settings.
Description
Module Notation
When necessary, the following notations are used to distinguish the GX90XA analog input
modules by type.
Type Suffix Code Notation
-U2 Universal
-C1 Current (mA)
-L1 Low withstand voltage relay
-T1 Electromagnetic relay
-H0 High-speed universal or High speed AI
-R1 4-wire RTD/resistance

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Contents
Introduction................................................................................................................................................ i
Recorder Versions Described in This Manual ..........................................................................................iii
Conventions Used in This Manual........................................................................................................... iv
Using the Log scale Function ............................................................................................................. 1
Log Scale Display Function...................................................................................................................... 1
Restrictions............................................................................................................................................... 2
Setting the Log scale ........................................................................................................................... 3
AI channel settings ................................................................................................................................... 3
Setup Examples ..................................................................................................................................... 13

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Using the Log scale Function
Log Scale Display Function
You can apply a logarithmic voltage that has been converted from a physical value to the
recorder, and then use the log scale (logarithmic scale) to display and record the physical
value. The recorder supports three types of input signals.
• Logarithmic Input
This is referred to as “Log input”. Log input is input in which the voltage corresponds to
logarithmic values of physical values.
• Pseudo Log Input
This is referred to as “Pseud-log input.” This input supports pseudo logs.
A pseudo log signal is a voltage obtained by summing the one’s digit of the voltage
representing the exponent of the logarithmic data and the decimal digits of the voltage
representing the mantissa.
• Input That Is Linear on a Logarithmic Scale
This is referred to as “Linear-Log input.” Linear log input is input in which the voltage
values correspond to the logarithmic values of physical values at each decade division
(for example, 1 × 102) and in which, within each decade, the voltage values correspond
linearly to physical values.
On the trend display, the recorder displays waveforms with the log scale. Digital values are
displayed as exponents (for example, 1.2E+03).
Display example on the GX/GP main unit
Trend display example on a Web application (GM)
Log scale
Digital value
Log scale

2IM 04L51B01-06EN
Restrictions
Partial
You cannot set the partial display on a channel that is set to log scale.
Differential Computation between Channels
If you set the reference channel of a differential computation between channels to a channel
that is set to log scale, an error will be returned as the measured result of the differential
computation between channels.
Computation Channels (/MT option)
Do not include channels that are set to log scale in a computation channel expression.
If you include these channels, an error will be returned as the measured result.
Report Function (/MT option)
You cannot create reports for channels that are set to log scale. An error will be returned as
the result of report computations on channels that are set to log scale.
Manual Sampled Data
For channels that are set to log scale, the data is stored using the “mantissa + exponent”
format, the same format as that of digital values on the recorder.
Number of Channels Set to Log Scale
Keep the number of channels set to log scale no greater than 300.
When there are many channels set to log scale, log scale processing may not finish within
the scan interval and may cause computation data dropouts.
Using the Log scale Function

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Setting the Log scale
AI channel settings
Log input computation cannot be specified on current (mA), 4-wire RTD/resistance modules.
Range settings
Path
GX/GP: MENU key > Browse tab > Setting > Setting menu AI channel settings > Range
Web application: Config. tab > AI channel settings > Channel range (display example:
0001-0010) > Range
Hardware configurator: AI channel settings > Channel range (display example: 0001-
0010) > Range
Description
Setup Item Selectable Range or Options Default Value
First-CH AI channel —
Last-CH AI channel —
First-CH, Last-CH
Set the target channels. The channels that you can specify appear depending on the module
configuration.
Range
Setup Item Selectable Range or Options Default Value
Type Skip, Volt, GS (general signal), TC
(thermocouple), RTD (resistance
temperature detector)1, DI (contact,
voltage level)
Volt
Range See “Range Details.” See “Range Details.”
Span Lower Numeric value (depends on the range) –2.0000
Span Upper Numeric value (depends on the range) 2.0000
Calculation Off, Delta, Linear scaling, Square root,
Log input, Pseudo-Log input, Linear-Log
input
Off
1 Cannot be specified for the electromagnetic relay type analog input module and low withstand
voltage relay type.
Type
Set the type to Volt. You cannot use the log scale display for any other type.
Note
For the channels in which you are not using an electromagnetic relay type module, set the range
type to Skip.

4IM 04L51B01-06EN
Range
Set the input type range.
Range Details
Type Range Selectable Range Default Value
Volt 20mV –20.000 mV to 20.000 mV 2V
60mV –60.00 mV to 60.00 mV
200mV –200.00 mV to 200.00 mV
1V –1.0000 V to 1.0000 V
2V –2.0000 V to 2.0000 V
6V –6.000 V to 6.000 V
20V –20.000 V to 20.000 V
50V –50.00 V to 50.00 V
100V1–100.00 V to 100.00 V
1 For high-speed universal type.
Span Lower, Span Upper
Set the input range. The selectable range varies depending on the range setting.
For the selectable ranges, see “Range Details.”
Note
You cannot set the same value to Span Lower and Span Upper.
Calculation
Set the log scale type to Log input, Pseudo-log input, or Linear-log input.
Scale1
Setup Item Selectable Range or Options Default Value
Decimal place 1, 2 2
Scale Lower Log input: 1.00E‒15 to 1.00E+14
Linear-Log, Pseudo-Log: 1.00E–15 to
1.00E+15
1.00E+00
Scale Upper Log input: 1.00E‒14 to 1.00E+15
Linear-Log, Pseudo-Log; 1.00E–15 to
1.00E+15
1.00E+15
Unit Character string (up to 6 characters, Aa#1)—
1 Appears when the range calculation is set to Log input, Pseudo-log input, or Linear-log
input.
Decimal Place
Set the decimal place for scale lower and scale upper.
This value is also applied to the lower and upper limits of the displayed point of color scale
band as well as alarm values.
Scale Lower, Scale Upper
Set the Scale Lower and Scale Upper.
Setting the Log scale

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• When Calculation is Log input
Set the settings so that Scale Lower is less than Scale Upper.
The mantissas of scale lower and scale upper can be set to different values.
Mantissa of Scale
Lower
Setting Range
1.00 1.00E‒15 to 1.00E+15. However, the difference between the exponents must
be at least 1.
The scale width must be 15 decades or less.
Scale Lower Scale Upper Notes
Example 1.00E+01 1.00E+02
Examples of invalid
settings
1.00E+01 2.00E+01 The difference
between the
exponents is less
than 1.
1.00E‒01 1.00E+15 The scale width
is greater than 15
decades.
A value other than 1.00 1.01E‒15 to 1.00E+15. However, the difference between the exponents must
be at least 2.
The scale width must be 15 decades or less.
Scale Lower Scale Upper Notes
Example 2.00E+01 1.00E+03
2.00E+00 5.00E+14
Examples of invalid
settings
2.00E+01 7.00E+02 The difference
between the
exponents is less
than 2.
2.00E‒01 1.00E+15 The scale width
is greater than 15
decades.
2.00E+03 2.00E+15 The upper limit
is greater than
1.00E+15.
Setting the Log scale

6IM 04L51B01-06EN
• Pseudo-Log, Linear-Log
You can set the settings so that Scale Lower is less than Scale Upper or so that Scale Lower
is greater than Scale Upper.
The mantissa that you set for Scale Lower is automatically set as the mantissa of Scale
Upper.
The scale is referred to as the positive scale or reverse scale depending on the scale value
settings.
Scale Span value (Input voltage) Scale value
Positive scale [Span Lower] < [Span Upper] [Scale Lower] < [Scale Upper]
Reverse scale [Scale Lower] > [Scale Upper]
Mantissa of Scale
Lower
Setting Range
1.00 1.00E–15 to 1.00E+15. However, the difference between the exponents must
be at least 1.
The scale width must be 15 decades or less.
Scale Lower Scale Upper Notes
Example 1.00E+01 1.00E+02
1.00E+15 1.00E+00
Examples of invalid
settings
1.00E‒01 1.00E+15 The scale width
is greater than
15 decades.
A value other than 1.00 1.00E–15 to 9.99E+14. However, the difference between the exponents must
be at least 1.
The scale width must be 14 decades or less
Scale Lower Scale Upper Notes
Example 1.33E+01 1.33E+02
1.33E+00 1.33E+13
1.33E+13 1.33E+00
Examples of invalid
settings
1.33E–15 1.33E+00 The scale width
is greater than
14 decades.
1.33E+03 1.33E+15 The upper limit
is greater than
9.99E+14.
The scale displayed on the recorder is zoomed in until the value that is less
than the lower scale limit and whose mantissa is 1.00 and the value that is
greater than the upper scale limit and whose mantissa is 1.00 are displayed.
See Example 4 under Scale Examples.
Unit
Set the unit.
Moving average
Setup Item Selectable Range or Options Default Value
On/Off Off, On Off
Count12 to 100
2 to 500 (High-speed AI)
2
1 Appears when On/Off is set to On.
On/Off
Set this to On to perform moving average.
Count
Set the number of data points to take the moving average of.
Average
Scan interval
Sampling count
Average
Setting the Log scale

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First-order lag filter (high-speed AI module only)
Setup Item Selectable Range or Options Default Value
On/Off Off, On Off
Filter coefficient13 to 300 3
1 Appears when On/Off is set to On.
On/Off
Set this to On to use the first-order lag filter.
Filter coefficient
Filter time constant = scan interval × filter coefficient N
The following table shows the relationship between filter coefficient N of the first-order lag
filter, scan interval, and time constant for filter coefficient N = 3, 10, 30, 100, and 300.
Scan interval Time constant (s)
N = 3 N = 10 N = 30 N = 100 N = 300
1ms 0.003 0.01 0.03 0.1 0.3
2ms 0.006 0.02 0.06 0.2 0.6
5ms 0.015 0.05 0.15 0.5 1.5
10ms 0.03 0.1 0.3 1 3
20ms 0.06 0.2 0.6 2 6
50ms 0.15 0.5 1.5 5 15
100ms 0.3 1 3 10 30
200ms 0.6 2 6 20 60
500ms 1.5 5 15 50 150
1s 3 10 30 100 300
2s 6 20 60 200 600
5s 15 50 150 500 1500
Description
When there is noise riding on the input signal, inserting a first-order lag filter has the effect of
rejecting noise. The larger the filter coefficient (time constant), the higher the noise rejection
effect. However, setting the filter coefficient too large will distort the waveform.
Actual input When the time constant
is small
When the time constant
is large
Input
Example when a
time constant 2-s
filter is inserted
Example when a time constant
10-s filter is inserted
Setting the Log scale

8IM 04L51B01-06EN
Bias
Setup Item Selectable Range or Options Default Value
Value Numeric value (–999999 to 999999) 0
Value
Set the bias to add to input values or linear scaling values (input calculation).
Input value Measured value
Bias (a constant value)
+
Channel on which bias is added
Scale Examples
Below are scale examples in which the trend direction is set to vertical on the GX/GP main
unit. With the GM, the measurement data is displayed on a Web application, so the following
items are different.
• The trend is displayed with the time plotted on the horizontal axis. Therefore, the scale is
displayed vertically.
• For example, a scale value of 1×103is displayed as “1E3.”
• Scale marks other than decades (e.g., 1E3) are displayed only when there is space.
Log input
Example 1
In this example, the mantissa of the scale lower limit and the mantissa of the scale upper
limit are both 1.
Lower Upper
Span value (Input voltage) 1V 5V
Scale value 1.00E+01 1.00E+04
1E4
1E3
1E2
2E2
5E2
2E3
5E3
2E1
5E1
1E1
5V
1V
1V 5V
Display example on the GX/GP main unit Display example on a Web application (GM)
Displayed only when
there is enough space.
Example 2
In this example, the mantissa of the scale lower limit and the mantissa of the scale upper
limit are both a value other than 1.
Lower Upper
Span value (Input voltage) 1V 5V
Scale value 5×1.00E+00 2×1.00E+04
1V 5V
2
510
4
103
102
10
The end points of the scale are displayed using single digits if there is space to display them.
Setting the Log scale

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Pseudo-Log input, Linear-Log input
Example 3
Positive scale in which the mantissa of the scale lower limit and the mantissa of the scale
upper limits are 1
This is the same as when the mantissa of the scale lower limit and the mantissa of the scale
upper limit are both 1 in log input example 1.
Example 4
Positive scale in which the mantissa of the scale lower limit and the mantissa of the scale
upper limits are not 1
The scale displayed on the recorder is zoomed in until the value that is less than the lower
scale limit and whose mantissa is 1.00 and the value that is greater than the upper scale
limit and whose mantissa is 1.00 are displayed. Only the scale is zoomed in.
Span Lower equals Scale Lower, and Span Upper equals Scale Upper.
Lower Upper
Span value (Input voltage) 1V 5V
Scale value 1.33E+01 1.33E+04
Scale displayed on the GX/GP 1.00E+01 1.00E+05
5V (1.33E+04)
Scale
1V (1.33E+01)
10410 5
103
102
10
Example 5
Reverse scale in which the mantissa of the scale lower limit and the mantissa of the scale
upper limits are 1
On the reverse scale of a vertical waveform display, the left side is always the minimum
scale value and the right side the maximum.
Lower Upper
Span value (Input voltage) 1V 5V
Scale value 1.00E+04 1.00E+01
1V
Scale
5V
104
103
102
10
The scale image shows 10-1 as 0.1, 100as 1, and 101as 10.
Note
Regarding Log Scale Over-range
A value less than –5% of the voltage span is a negative over-range, and a value greater than 105%
of the scale is a positive over-range. They are displayed as –Over and +Over. The “Value on over-
range” setting (see section 1.11.2, “Setting the Over-range Detection Method” in the user’s manual
(IM 04L51B01-01EN) or section 2.12.2, “Setting the Over-range Detection Method” in the user’s
manual (IM04L55B01-01EN)) is not applied to channels that are set to log scale.
Example: If the span lower limit is set to 0 V and the span upper limit is set to 10 V, a value less
than –0.5 V will result in “–Over” being displayed. A value greater than 10.5 V will result in “+Over”
being displayed.
Setting the Log scale

10 IM 04L51B01-06EN
Alarm settings
Path
GX/GP: MENU key > Browse tab > Setting > Setting menu AI channel settings > Alarm
Web application: Config. tab > AI channel settings > Channel range (display example:
0001-0010) > Alarm
Hardware configurator: AI channel settings > Channel range (display example: 0001-0010)
> Alarm
Description
Setup Item Selectable Range or Options Default Value
First-CH AI channel —
Last-CH AI channel —
First-CH, Last-CH
Set the target channels. The channels that you can specify appear depending on the module
configuration.
Level 1, Level 2, Level 3, Level 4
Setup Item Selectable Range or Options Default Value
On/Off Off, On Off
Type1H: High limit, L: Low limit, T: Delay high limit, t: Delay
low limit
H: High limit
Value1Log scale range that corresponds to –5% to 105% of
the span width
1.00E+00
Logging1Off, On On
Output type1Off, Relay3, Internal switch4Off
Output No.2DO channel or internal switch —
1 Appears when Level (1 to 4) is set to On.
2 Appears when Output type is not set to Off.
3 Appears when the range type of any of the DO channels is set to Alarm.
4 Appears when any of the internal switch type is set to Alarm.
On/Off
To use an alarm level (1 to 4), set this to On.
Type
Set the alarm type.
Options Description
H: High limit An alarm is activated when the measured value is greater than or equal to the
alarm value.
L: Low limit An alarm is activated when the measured value is less than or equal to the
alarm value.
T: Delay high limit An alarm is activated if measured values remain greater than or equal to the
alarm value for a specified time period (delay period).
t: Delay low limit An alarm is activated if measured values remain less than or equal to the alarm
value for a specified time period (delay period).
Value
Set the alarm value for the specified alarm type.
The selectable range is the Log scale range that corresponds to –5% to 105% of the span
width. The mantissa range is 1.00 to 9.99 or 1.0 to 9.9 (depending on the decimal place
setting).
If the alarm value is set outside the selectable scale range of the range setting, the alarm
mark will be displayed at the lower or upper limit position of the scale setting.
Options Value Examples of Alarm Value Range
H, L Log scale range that corresponds to –5%
to 105% of the span width
For 6 V range (span lower: 1.000 V, span
upper: 6.000V), LOG input (decimal place:
2, scale lower: 1.00E+01, scale upper:
1.00E+04), 7.08E+00 to 1.41E+04
T, t Same as H and L Same as H and L
Setting the Log scale

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Logging
Set this On to display an alarm (notify you) when an alarm occurs. If set to Off, when an
alarm occurs, the recorder outputs signals to alarm output DO channels or internal switches
but does not display the alarm. Alarms are also not recorded in the alarm summary.
Output type
Set the alarm output destination.
Alarm status can be output to the relay (DO channel) or internal switches (100 software
switches). Internal switch values are shown below. Like the DO output relay, you can specify
AND/OR operation.
Alarm
Alarm occurrence
Alarm release
Internal switch
1
0
Internal switches can be used as events of the event action function (See section 1.19,
“Configuring the Event Action Function” in the GX/GP user’s manual or section 2.20,
“Configuring the Event Action Function” in the GM user’s manual (IM 04L55B01-01EN)). In
addition, they can also be written in calculation expressions of math channels (/MT option).
Output No.
Set the number of the relay (DO channel) or internal switch to output alarms to.
Note
• The decimal place of the alarm setting is the same as the decimal place of the scale. You
cannot specify a value using more than the number of significant digits.
• The alarm hysteresis on channels that are set to log scale is fixed to 0%.
• The “lower and upper limits of available range” shown on the alarm setting screen are
guidelines.
Setting the Log scale

12 IM 04L51B01-06EN
Color scale band settings (Display settings)
Path
GX/GP: MENU key > Browse tab > Setting > Setting menu AI channel settings > Display
settings
Web application: Config. tab > AI channel settings > Channel range (display example:
0001-0010) > Display settings
Hardware configurator: AI channel settings > Channel range (display example: 0001-0010)
> Display settings
Description
Color scale band
Setup Item Selectable Range or Options Default Value
Band area Off, In, Out Off
Color 24 colors (red, green, blue, blue violet, brown, orange,
yellow-green, light blue, violet, gray, lime, cyan, dark
blue, yellow, light gray, purple, black, pink, light brown,
light green, dark gray, olive, dark cyan, and spring
green) and a user-defined color (1 color)
—
Display position Lower Scale lower limit to scale upper limit 1.00E+00
Display position Upper Scale lower limit to scale upper limit 1.00E+15
Band area
Displays a specified section of the measurement range using a color band on the scale. This
setting is shared with the bar graph display.
Options Description
Off Disables the function.
In Displays the area inside using the color band.
Out Displays the area outside using the color band.
Color
Set the display color.
For instructions on how to set the user-defined color, see section 1.2.3, “Setting the
Display” in the GX/GP user’s manual (IM 04L51B01-01EN) or section 2.3.3, “Setting the
Display” in the GM user’s manual (IM 04L55B01-01EN).
Display position Lower and Display position Upper
Set a value within the selectable scale range. (The selectable range is 1.00E‒15 to
1.00E+15. Set the mantissa to a value in the range of 1.00 to 9.99.
Setting the Log scale