Honeywell 2MLF-AV8A User manual

Honeywell Process Solutions
Analog Input Module
2MLF-AV8A, AC8A
User's Guide
ML200-AI
R200
September 2010
Release 200
Honeywell

ii Analog Input Module 2MLF-AV8A, AC8A User's Guide R200
Honeywell September 2010
Notices and Trademarks
Copyright 2010 by Honeywell International Sárl.
Release 200 September, 2010
While this information is presented in good faith and believed to be accurate, Honeywell disclaims
the implied warranties of merchantability and fitness for a particular purpose and makes no
express warranties except as may be stated in its written agreement with and for its customers.
In no event is Honeywell liable to anyone for any indirect, special or consequential damages. The
information and specifications in this document are subject to change without notice.
Honeywell, PlantScape, Experion PKS, and TotalPlant are registered trademarks of Honeywell
International Inc.
Other brand or product names are trademarks of their respective owners.
Honeywell Process Solutions
1860 W. Rose Garden Lane
Phoenix, AZ 85027 USA
1-800 822-7673

R200 Analog Input Module 2MLF-AV8A, AC8A User's Guide iii
September 2010 Honeywell
About This Document
This document describes the procedure to install and configure the 2MLF-AV8A and AC8A;
Analog to digital voltage and current converters.
Release Information
Document Name Document
ID
Release
Number
Publication
Date
2MLF-AV8A, AC8A User's Guide ML200-AI 200 September
2010
References
The following list identifies all documents that may be source of reference for material discussed
in this publication.
Document Title
SoftMaster User’s Guide

Support and Other Contacts
iv Analog Input Module 2MLF-AV8A, AC8A User's Guide R200
Honeywell September 2010
Support and Other Contacts
United States and Canada
Contact:
Phone:
Fascimile:
Mail:
Honeywell Solution Support Center
1-800-822-7673
Calls are answered by dispatcher between 6:00 am and 4:00 pm
Mountain Standard Time. Emergency calls outside normal working hours
are received by an answering service and returned within one hour.
1-973-455-5000
Honeywell TAC, MS L17
1860 W. Garden Lane
Phoenix, AZ, 85027 USA
Europe, Middle East, and Africa (EMEA)
Contact:
Phone:
Fascimile:
Mail:
Honeywell TAC-EMEA
[phone]
[phone]
TAC-BE02
Hermes Plaza
Hermeslaan, 1H
B-1831 Diegem, Belgium
Pacific
Contact:
Phone:
Fascimile:
Mail:
Email:
Honeywell Global TAC – Pacific
1300-364-822 (toll free within Australia)
[phone] (outside Australia)
[phone]
Honeywell Limited Australia
5 Kitchener Way
Burswood 6100, Western Australia
[e-mail]
India
Contact:
Phone:
Fascimile:
Mail:
Email:
Honeywell Global TAC – India
[phone]
[phone]
Honeywell Automation India Ltd
56 and 57, Hadapsar Industrial Estate
Hadapsar, Pune –411 013, India
[e-mail]
Korea

Support and Other Contacts
R200 Analog Input Module 2MLF-AV8A, AC8A User's Guide v
September 2010 Honeywell
Contact:
Phone:
Fascimile:
Mail:
Email:
Honeywell Global TAC – Korea
[phone]
[phone]
Honeywell Co., Ltd
4F, Sangam IT Tower
1590, DMC Sangam-dong, Mapo-gu
Seoul, 121-836, Korea
[e-mail]
People’s Republic of China
Contact:
Phone:
Mail:
Email:
Honeywell Global TAC – China
[phone]
800-820-0237
400-820-0386
Honeywell (China) Co., Ltd
33/F, Tower A, City Center, 100 Zunyi Rd.
Shanghai 200051, People’s Republic of China
[e-mail]
Singapore
Contact:
Phone:
Fascimile:
Mail:
Email:
Honeywell Global TAC – South East Asia
[phone]
[phone]
[phone]
Honeywell Private Limited
Honeywell Building
17, Changi Business Park Central 1
Singapore 486073
[e-mail]
Taiwan
Contact:
Phone:
Fascimile:
Mail:
Email:
Honeywell Global TAC – Taiwan
[phone]
[phone]
Honeywell Taiwan Ltd.
17F-1, No. 260, Jhongshan 2nd Road.
Cianjhen District
Kaohsiung, Taiwan, ROC
Global-TAC-Tai[email protected]om
Japan
Contact:
Phone:
Fascimile:
Honeywell Global TAC – Japan
[phone]
[phone]

Support and Other Contacts
vi Analog Input Module 2MLF-AV8A, AC8A User's Guide R200
Honeywell September 2010
Mail:
Email:
Honeywell Japan Inc.
New Pier Takeshiba, South Tower Building,
20th Floor, 1-16-1 Kaigan, Minato-ku,
Tokyo 105-0022, Japan
[e-mail]
Elsewhere
Call your nearest Honeywell office.
World Wide Web
Honeywell Solution Support Online:
http://www.honeywell.com/ps
Training Classes
Honeywell Automation College:
http://www.automationcollege.com

Symbol Definitions
R200 Analog Input Module 2MLF-AV8A, AC8A User's Guide vii
September 2010 Honeywell
Symbol Definitions
The following table lists the symbols used in this document to denote certain conditions.
Symbol Definition
ATTENTION: Identifies information that requires special
consideration.
TIP: Identifies advice or hints for the user, often in terms of
performing a task.
REFERENCE -EXTERNAL: Identifies an additional source of
information outside of the bookset.
REFERENCE - INTERNAL: Identifies an additional source of
information within the bookset.
CAUTION
Indicates a situation which, if not avoided, may result in equipment
or work (data) on the system being damaged or lost, or may result in
the inability to properly operate the process.
CAUTION: Indicates a potentially hazardous situation which, if not
avoided, may result in minor or moderate injury. It may also be used
to alert against unsafe practices.
CAUTION symbol on the equipment refers the user to the product
manual for additional information. The symbol appears next to
required information in the manual.
WARNING: Indicates a potentially hazardous situation, which, if not
avoided, could result in serious injury or death.
WARNING symbol on the equipment refers the user to the product
manual for additional information. The symbol appears next to
required information in the manual.
WARNING, Risk of electrical shock: Potential shock hazard where
HAZARDOUS LIVE voltages greater than 30 Vrms, 42.4 Vpeak, or
60 VDC may be accessible.

Symbol Definitions
viii Analog Input Module 2MLF-AV8A, AC8A User's Guide R200
Honeywell September 2010
Symbol Definition
ESD HAZARD: Danger of an electro-static discharge to which
equipment may be sensitive. Observe precautions for handling
electrostatic sensitive devices.
Protective Earth (PE) terminal: Provided for connection of the
protective earth (green or green/yellow) supply system conductor.
Functional earth terminal: Used for non-safety purposes such as
noise immunity improvement. NOTE: This connection shall be
bonded to Protective Earth at the source of supply in accordance
with national local electrical code requirements.
Earth Ground:Functional earth connection. NOTE: This
connection shall be bonded to Protective Earth at the source of
supply in accordance with national and local electrical code
requirements.
Chassis Ground: Identifies a connection to the chassis or frame of
the equipment shall be bonded to Protective Earth at the source of
supply in accordance with national and local electrical code
requirements.

R200 Analog Input Module 2MLF-AV8A, AC8A User's Guide ix
September 2010 Honeywell
Contents
1. INTRODUCTION ..........................................................................15
1.1 Overview ........................................................................................................ 15
1.2 Features ......................................................................................................... 15
1.3 Terminology................................................................................................... 17
Analog value- A....................................................................................................................17
Digital value - D....................................................................................................................17
Characteristics of A/D conversion ........................................................................................19
2. SPECIFICATIONS........................................................................21
2.1 Performance specifications ......................................................................... 21
2.2 Part names and functions ............................................................................ 24
2.3 Characteristics of I/O conversion................................................................ 26
I/O characteristics of 2MLF-AV8A ........................................................................................27
I/O characteristics of 2MLF-AC8A........................................................................................33
Accuracy ..............................................................................................................................38
2.4 Functions ....................................................................................................... 39
Functions of the input module ..............................................................................................39
Sampling process.................................................................................................................40
Filter process........................................................................................................................40
Average process ..................................................................................................................42
Function to detect input signal failure/disconnect.................................................................44
3. INSTALLATION AND WIRING ....................................................47
3.1 Installation ..................................................................................................... 47
Installation environment .......................................................................................................47
Handling precautions ...........................................................................................................48
3.2 Wiring ............................................................................................................. 49
Precautions for wiring...........................................................................................................49
Wiring examples...................................................................................................................49
4. OPERATING PROCEDURES AND MONITORING .....................53
4.1 Operating procedures................................................................................... 53

Contents
Symbol Definitions
x Analog Input Module 2MLF-AV8A, AC8A User's Guide R200
Honeywell September 2010
4.2 Run parameters setting.................................................................................54
Setting items........................................................................................................................ 54
Setting I/O parameters ........................................................................................................ 55
4.3 Special module monitoring ..........................................................................61
4.4 Register special module variables...............................................................65
Registering special module variables .................................................................................. 65
Saving variables .................................................................................................................. 66
Program example with variable and address....................................................................... 66
5. CONFIGURATION AND FUNCTION OF INTERNAL MEMORY. 69
5.1 Internal memory configuration.....................................................................69
Setting area of Run parameters .......................................................................................... 71
5.2 I/O area of A/D converted data .....................................................................73
Module Ready/Error (%UXa.b.0, %UXa.b.15; a: Base No., b: Slot No.) ............................ 73
Run channel (%UXa.b.16~23, a: Base No., b: Slot No.) .................................................... 73
Digital output value (%UWa.b.2 ~9, a: Base No., b: Slot No.) ............................................. 73
Detect input signal failure/disconnect flag (%UXa.b.160~167 a: Base No., b: Slot No.) ..... 74
Error clear request flag (%UXa.b.176, a: Base No., b: Slot No.) ......................................... 75
5.3 Operation parameters settings area ............................................................76
Address 0 - A/D conversion enable/disable status for each channel ................................... 76
Address 1 - Input voltage/current range .............................................................................. 76
Address 2 - Output data format ........................................................................................... 79
Address 4-11 - Filter constant ............................................................................................. 80
Address 12 - Average process Enable/Disable ................................................................... 81
Address 13 - Average process method (address number 13) ............................................. 82
Address 14-21 - Average value ........................................................................................... 82
Error code (address number 22) ......................................................................................... 83
5.4 Global variable (data area)............................................................................85
How to use global variable .................................................................................................. 85
Local variable registration ................................................................................................... 85
How to use local variables................................................................................................... 87
5.5 PUT/GET function block use area (parameter area) ..................................90
PUT instruction.................................................................................................................... 91
GET instruction.................................................................................................................... 93
Example using PUT/GET instruction ................................................................................... 94
Output data range setting .................................................................................................... 97
6. PROGRAMMING ....................................................................... 107
6.1 Read/Write of operation parameter settings area ....................................107
Read operation parameters settings area (GET, GETP command) .................................. 107

Contents
Tables
R200 Analog Input Module 2MLF-AV8A, AC8A User's Guide xi
September 2010 Honeywell
Write operation parameters settings area (PUT, PUTP command)....................................108
6.2 Configuring A/D module via program method ......................................... 110
2MLF-AV8A........................................................................................................................110
2MLF-AC8A .......................................................................................................................111
6.3 Basic program ............................................................................................. 113
2MLF-AV8A........................................................................................................................113
2MLF-AC8A .......................................................................................................................116
6.4 Application program examples.................................................................. 120
Program to compare A/D conversion values ......................................................................120
Program to output error codes of analog input module to BCD display..............................124
Program description ...........................................................................................................125
7. TROUBLESHOOTING ...............................................................129
7.1 Error codes .................................................................................................. 129
7.2 Troubleshooting.......................................................................................... 131
RUN LED blinks .................................................................................................................131
RUN LED is OFF................................................................................................................132
CPU module cannot read A/D conversion value ................................................................133
Mismatch between analog input value and digital output value..........................................133
H/W error of A/D conversion module..................................................................................134
Status check of A/D conversion module using System Monitor menu ...............................134
8. APPENDIX .................................................................................135
8.1 Appendix 1: Terminology ........................................................................... 135
8.2 Appendix 2: External dimensions ............................................................. 138
External dimensions of 2MLF-AV8A/AC8A ........................................................................138

Contents
Tables
xii Analog Input Module 2MLF-AV8A, AC8A User's Guide R200
Honeywell September 2010
Tables
Table 1 – Performance specifications............................................................................21
Table 2 – LED indications ..............................................................................................25
Table 3 – Performance specifications............................................................................39
Table 4 – I/O parameter setting functions......................................................................54
Table 5 – I/O area of A/D converted data ......................................................................69
Table 6 – Setting area of run parameters ......................................................................71
Table 7 – List of error codes ........................................................................................129

Contents
Figures
R200 Analog Input Module 2MLF-AV8A, AC8A User's Guide xiii
September 2010 Honeywell
Figures
Figure 1 – Analog value................................................................................................. 17
Figure 2 – Example of transducer ................................................................................. 17
Figure 3 – Digital value.................................................................................................. 18
Figure 4 – Process in PLC............................................................................................. 18
Figure 5 – Characteristics of A/D conversion (voltage input) ........................................ 19
Figure 6 – Characteristics of A/D conversion (current input)......................................... 20
Figure 7 – Parts of 2MLF-AV8A and 2MLF-AC8A ........................................................ 24
Figure 8 – Accuracy....................................................................................................... 38
Figure 9 – Operating procedure .................................................................................... 53
Figure 10 –Program example with variables and addresses ........................................ 67

Contents
Figures
xiv Analog Input Module 2MLF-AV8A, AC8A User's Guide R200
Honeywell September 2010

R200 Analog Input Module 2MLF-AV8A, AC8A User's Guide 15
September 2010 Honeywell
1. Introduction
1.1 Overview
This user’s guide describes two analog input modules.
•2MLF-AV8A type voltage to digital conversion module
•2MLF-AC8A type current to digital conversion module.
Both A/D conversion modules are used for converting analog signals (voltage or current
input) from PLC’s external device to signed 16-bit binary data of digital value. They are
used with MasterLogic-200 CPU module, ML200-IEC (2MLI-CPUU), and ML200R
(2MLR-CPUH).
1.2 Features
1. Module selection: You can choose the module depending on input signal type.
a) 2MLF-AV8A: 8 channels, voltage input
b) 2MLF-AC8A: 8 channels, current input
2. High speed A/D conversion @ 250 µs/channel.
3. High conversion accuracy of ±0.2% (ambient temperature of 25 ± 5o
4. High resolution (16-bit) of digital value, that is, 1/16000.
C).
5. Simplified module setup/monitoring through GUI:
Setting up an A/D conversion module’s operation parameters (that is, range, filter,
and so on.) was traditionally a cumbersome process using repetitive sequences of
ladder programs. This is now achieved using a user-friendly graphical user interface
(GUI) in SoftMaster I/O Parameters. In addition, the A/D conversion value can also
be easily monitored using the Special Module Monitoring function.
6. Multiple digital output data formats: Fours formats are available, as specified
below:
a) Unsigned value: 0 ~ + 16000
b) Signed value: - 8000 ~ + 8000
c) Precise value: Refer to Performance specifications.
d) Percentile value: 0 ~ + 10000

1. Introduction
1.2. Features
16 Analog Input Module 2MLF-AV8A, AC8A User's Guide R200
Honeywell September 2010
7. Detecting input signal failure/disconnect: Applicable only when analog input range
of 1 ~ 5V (or 4 ~ 20mA) is used.

1. Introduction
1.3. Terminology
R200 Analog Input Module 2MLF-AV8A, AC8A User's Guide 17
September 2010 Honeywell
1.3 Terminology
Analog value- A
The analog value of the physical measurement is continuously displayed as numerical
value. Since the analog value changes continuously, an instantaneous value is given as an
input. It could be a measurement of any physical parameter, such as voltage, current,
temperature, speed, pressure or flow.
Figure 1 – Analog value
For example, temperature could be changing continuously with respect to time, as shown
in Figure 1.
Figure 2 – Example of transducer
Since the changing temperature cannot be directly provide as an input to the A/D
converter, it needs to be converted into voltage using a transducer and then provided.
Digital value - D
In a digital electronic circuit, data is processed and saved in the form of numbers 0 and 1
only. The data is processed as a string of 0s and 1s. For example, ON and OFF signals

1. Introduction
1.3. Terminology
18 Analog Input Module 2MLF-AV8A, AC8A User's Guide R200
Honeywell September 2010
can be displayed as 0 and 1, respectively, in a digital system. This is called as the binary
numbering system. Decimals stored in binary numbering systems are called binary coded
decimals (BCD). Figure 3 displays the digital value of the physical parameter.
Figure 3 – Digital value
Figure 4 – Process in PLC
As the PLC processes only binary numbers, analog values cannot be directly input to the
PLC’s CPU for calculation. Conversion from analog to digital (as shown in Figure 4) is
required. This is done using Analog to Digital converter (A/D conversion module).
Similarly, to get an analog output from a digital value, a Digital to Analog converter
(D/A conversion module) is used.

1. Introduction
1.3. Terminology
R200 Analog Input Module 2MLF-AV8A, AC8A User's Guide 19
September 2010 Honeywell
Characteristics of A/D conversion
Voltage input
A/D conversion module is used for converting analog electric signal input from the
external device to digital value. Analog input signal converted to digital value can be
processed by the PLC’s CPU. If analog input range of -10 ~ 10V is used in voltage type
of A/D conversion module, -10V of analog input corresponds to output of digital value 0.
Analog input of +10V corresponds to output digital value of 16000. This means, an
analog input of 1.25mV represents digital value of 1, as shown in Figure 5.
Figure 5 – Characteristics of A/D conversion (voltage input)
Current input
If analog input range of 0 ~ 20mA is used in current type of A/D conversion module, the
0mA of analog input corresponds to the output of digital value of 0. Analog input of
20mA corresponds to the output digital value of 16000. This means analog input of
1.25µA represents digital value of 1 (Figure 6).

1. Introduction
1.3. Terminology
20 Analog Input Module 2MLF-AV8A, AC8A User's Guide R200
Honeywell September 2010
Figure 6 – Characteristics of A/D conversion (current input)