Bailey Infi 90 IMLMM02 User manual

®
®
Process Control and
Automation Solutions
from Elsag Bailey Group
E96-209
Logic Master Module
(IMLMM02)

WARNING notices as used in this instruction apply to hazards or unsafe practices that could result in
personal injury or death.
CAUTION notices apply to hazards or unsafe practices that could result in property damage.
NOTES highlight procedures and contain information that assists the operator in understanding the
information contained in this instruction.
WARNING
INSTRUCTION MANUALS
DO NOT INSTALL, MAINTAIN, OR OPERATE THIS EQUIPMENT WITHOUT READING, UNDERSTANDING,
AND FOLLOWING THE PROPER Elsag Bailey INSTRUCTIONS AND MANUALS; OTHERWISE, INJURY OR
DAMAGE MAY RESULT.
RADIO FREQUENCY INTERFERENCE
MOST ELECTRONIC EQUIPMENT IS INFLUENCED BY RADIO FREQUENCY INTERFERENCE (RFI). CAU-
TION SHOULD BE EXERCISED WITH REGARD TO THE USE OF PORTABLE COMMUNICATIONS EQUIP-
MENT IN THE AREA AROUND SUCH EQUIPMENT. PRUDENT PRACTICE DICTATES THAT SIGNS
SHOULD BE POSTED IN THE VICINITY OF THE EQUIPMENT CAUTIONING AGAINST THE USE OF POR-
TABLE COMMUNICATIONS EQUIPMENT.
POSSIBLE PROCESS UPSETS
MAINTENANCE MUST BE PERFORMED ONLY BY QUALIFIED PERSONNEL AND ONLY AFTER SECURING
EQUIPMENT CONTROLLED BY THIS PRODUCT. ADJUSTING OR REMOVING THIS PRODUCT WHILE IT IS
IN THE SYSTEM MAY UPSET THE PROCESS BEING CONTROLLED. SOME PROCESS UPSETS MAY
CAUSE INJURY OR DAMAGE.
AVERTISSEMENT
MANUELS D’OPÉRATION
NE PAS METTRE EN PLACE, RÉPARER OU FAIRE FONCTIONNER L’ÉQUIPEMENT SANS AVOIR LU,
COMPRIS ET SUIVI LES INSTRUCTIONS RÉGLEMENTAIRES DE Elsag Bailey. TOUTE NÉGLIGENCE À
CET ÉGARD POURRAIT ÊTRE UNE CAUSE D’ACCIDENT OU DE DÉFAILLANCE DU MATÉRIEL.
PERTURBATIONS PAR FRÉQUENCE RADIO
LA PLUPART DES ÉQUIPEMENTS ÉLECTRONIQUES SONT SENSIBLES AUX PERTURBATIONS PAR
FRÉQUENCE RADIO. DES PRÉCAUTIONS DEVRONT ÊTRE PRISES LORS DE L’UTILISATION DU MATÉ-
RIEL DE COMMUNICATION PORTATIF. LA PRUDENCE EXIGE QUE LES PRÉCAUTIONS À PRENDRE
DANS CE CAS SOIENT SIGNALÉES AUX ENDROITS VOULUS DANS VOTRE USINE.
PERTURBATIONS DU PROCÉDÉ
L’ENTRETIEN DOIT ÊTRE ASSURÉ PAR UNE PERSONNE QUALIFIÉE EN CONSIDÉRANT L’ASPECT
SÉCURITAIRE DES ÉQUIPEMENTS CONTRÔLÉS PAR CE PRODUIT. L’AJUSTEMENT ET/OU L’EXTRAC-
TION DE CE PRODUIT PEUT OCCASIONNER DES À-COUPS AU PROCÉDÉ CONTRÔLE LORSQU’IL EST
INSÉRÉ DANS UNE SYSTÈME ACTIF. CES À-COUPS PEUVENT ÉGALEMENT OCCASIONNER DES
BLESSURES OU DES DOMMAGES MATÉREILS.
NOTICE
The information contained in this document is subject to change without notice.
Elsag Bailey, its affiliates, employees, and agents, and the authors and contributors to this publication specif-
ically disclaim all liabilities and warranties, express and implied (including warranties of merchantability and
fitness for a particular purpose), for the accuracy, currency, completeness, and/or reliability of the information
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or equipment selected in whole or part with the user of/or in reliance upon information contained herein.
Selection of materials and/or equipment is at the sole risk of the user of this publication.
This document contains proprietary information of Elsag Bailey, Elsag Bailey Process Automation, and
is issued in strict confidence. Its use, or reproduction for use, for the reverse engineering, development
or manufacture of hardware or software described herein is prohibited. No part of this document may be
photocopied or reproduced without the prior written consent of Elsag Bailey.

I-E96-209A
Preface
The purpose of this document is to provide the user with
installation, configuration, operating and troubleshooting
information on the INFI 90®Logic Master Module (IMLMM02).
The following hardware, as it applies, is mentioned as well:
® INFI 90 is a registered trademark of the Elsag Bailey Process Automation.
Termination Units/modules: NTDI01, NTDO02,
NIDI01, NIDO01
Termination Unit Cables: NKTU01, NKTM01, NKTU02
Digital Slave Modules: IMDSM04, IMDSM05,}
IMDSI02, IMDSO01,
IMDSO02, IMDSO03,
IMDSO04

I-E96-209A
®
List of Effective Pages
Total number of pages in this manual is 36, consisting of the following:
Page No. Change Date
Preface Original
List of Effective Pages Original
iii through vii Original
1-1 through 1-6 Original
2-1 through 2-6 Original
3-1 through 3-7 Original
4-1 through 4-2 Original
5-1 through 5-4 Original
6-1 Original
7-1 Original
8-1 Original
Index-1 Original
When an update is received, insert the latest changed pages and dispose of the super-
seded pages.
NOTE: On an update page, the changed text or table is indicated by a vertical bar in the outer mar-
gin of the page adjacent to the changed area. A changed figure is indicated by a vertical bar in the
outer margin next to the figure caption. The date the update was prepared will appear beside the
page number.

vi I-E96-209A
Safety Summary
®
GENERAL
WARNINGS Equipment Environment
All components, whether in transportation, operation or storage
must be in a noncorrosive environment.
Electrical Shock Hazard During Maintenance
Disconnect power or take precautions to ensure that contact with
energized parts is avoided when servicing.
Special Handling
This module uses Electrostatic Sensitive Devices (ESD).
SPECIFIC
WARNINGS Disconnect power before installing dipshunts for slave modules on
the MMU backplane (slave expander bus). Failure to do so could
result in severe or fatal shock. (p. 3-6).

I-E96-209A vii
Sommaire de Sécurité
AVERTISSEMENTS
D’ORDRE
GÉNÉRAL
Environment de l'equipement
Nes pas soumettre les composantes a une atmosphere corrosive
lors du transport, de l'entreposage ou de l'utilisation.
Risques de chocs electriques lor de l'entretien
S'assurer de debrancher l'alimentation ou de prende les precau-
tions necessaires a eviter tout contact avec des composants sours
tension lors de l'entretien.
Precautions de Manutention
Ce module contient des composantes sensibles aux decharges
electro-statiques.
AVERTISSEMENTS
D’ORDRE
SPÉCIFIQUE
Couper l'alimentation avant d'installer les dipshunts sur la plaque
arriere du chassis de montage de modules (MMU). Toute negli-
gence a cet egard constitue un risque de choc pouvant entrainer
des blessures graves, voire moretiles. (p. 3-6)

Table of Contents
Page
I-E96-209A iii
SECTION 1 - INTRODUCTION....................................................................................................1-1
OVERVIEW ..................................................................................................................1-1
INTENDED USER.........................................................................................................1-1
MODULE DESCRIPTION ..............................................................................................1-1
MODULE APPLICATION ...............................................................................................1-1
INSTRUCTION CONTENT .............................................................................................1-1
HOW TO USE THIS MANUAL .......................................................................................1-2
REFERENCE DOCUMENTS..........................................................................................1-2
GLOSSARY OF TERMS AND ABBREVIATIONS .............................................................1-3
NOMENCLATURE ........................................................................................................1-4
SPECIFICATIONS.........................................................................................................1-5
SECTION 2 - DESCRIPTION AND OPERATION........................................................................2-1
INTRODUCTION...........................................................................................................2-1
FUNCTIONAL OPERATION ...........................................................................................2-1
Microprocessor, Timing, and Control Circuitry .......................................................2-1
Module Bus Interface .............................................................................................2-1
Slave Expander Bus Interface ................................................................................2-2
Memory .................................................................................................................2-2
Machine Fault Timer..............................................................................................2-2
Digital Inputs/Outputs ..........................................................................................2-3
SECURITY FUNCTIONS................................................................................................2-3
CONFIGURATION.........................................................................................................2-3
Function Blocks.....................................................................................................2-4
Function Codes......................................................................................................2-4
SECTION 3 - INSTALLATION.....................................................................................................3-1
INTRODUCTION...........................................................................................................3-1
SPECIAL HANDLING ....................................................................................................3-1
UNPACKING AND INSPECTION ....................................................................................3-1
SETUP/PHYSICAL INSTALLATION ...............................................................................3-2
Logic Master Module Installation............................................................................3-2
Module Address Switch (S2) Settings ...............................................................3-3
Digital Input Jumper Settings..........................................................................3-5
Physical Installation ........................................................................................3-5
Termination Unit/Module Configuration ................................................................3-5
Slave Expander Bus Connection ............................................................................3-6
WIRING CONNECTIONS AND CABLING .......................................................................3-6
Wiring....................................................................................................................3-6
Cable Connections .................................................................................................3-7
CONFIGURATION.........................................................................................................3-7
SECTION 4 - OPERATING PROCEDURES................................................................................4-1
INTRODUCTION...........................................................................................................4-1
MODES OF OPERATION ..............................................................................................4-1
Configure Mode......................................................................................................4-1
Execute Mode ........................................................................................................4-1
Error Mode ............................................................................................................4-1

iv I-E96-209A
Table of Contents (continued)
Page
®
SECTION 4 - OPERATING PROCEDURES
(continued)
LED INDICATORS........................................................................................................ 4-1
Status LED............................................................................................................ 4-1
Input/Output LEDs............................................................................................... 4-2
RESET SWITCH........................................................................................................... 4-2
START-UP PROCEDURES............................................................................................ 4-2
SECTION 5 - TROUBLESHOOTING...........................................................................................5-1
INTRODUCTION .......................................................................................................... 5-1
ERROR INDICATIONS AND CORRECTIVE ACTION ...................................................... 5-1
Logic Master Module Indicators ............................................................................. 5-1
Status LED............................................................................................................ 5-1
STATUS BYTES ........................................................................................................... 5-2
CONNECTOR PINOUTS................................................................................................ 5-4
SECTION 6 - MAINTENANCE.....................................................................................................6-1
INTRODUCTION .......................................................................................................... 6-1
MAINTENANCE SCHEDULE ........................................................................................ 6-1
SECTION 7 - REPAIR/REPLACEMENT PROCEDURES...........................................................7-1
INTRODUCTION .......................................................................................................... 7-1
MODULE REPAIR/REPLACEMENT PROCEDURES ...................................................... 7-1
SECTION 8 - SUPPORT SERVICES...........................................................................................8-1
INTRODUCTION .......................................................................................................... 8-1
REPLACEMENT PARTS AND ORDERING INFORMATION ............................................. 8-1
TRAINING.................................................................................................................... 8-1
TECHNICAL DOCUMENTATION................................................................................... 8-1
List of Tables
No. Title Page
2-1. Executive Function Block Outputs ........................................................................ 2-4
2-2. Function Codes ..................................................................................................... 2-5
3-1. Run Mode Settings (S2) ......................................................................................... 3-3
3-2. Module Address Settings (S2) ................................................................................ 3-4
5-1. LMM Module Mode LED Indications and Corrective Actions ................................... 5-2
5-2. Module Status Bytes.............................................................................................. 5-2
5-3. P1 Pinout .............................................................................................................. 5-4
5-4. P2 Pinout .............................................................................................................. 5-4
5-5. P3 Pinout .............................................................................................................. 5-4
6-1. Maintenance Schedule........................................................................................... 6-1
8-1. Spare Parts List..................................................................................................... 8-1

List of Figures
No. Title Page
I-E96-209A v
2-1. Logic Master Module Block Diagram ......................................................................2-1
3-1. Logic Master Module ..............................................................................................3-2
3-2. Module Address Switch (S2) ...................................................................................3-3
4-1. LMM Front Panel ...................................................................................................4-2

OVERVIEW
I-E96-209A 1 - 1
SECTION 1 - INTRODUCTION
OVERVIEW
The Logic Master Module (IMLMM02) is an INFI 90 module that
performs multiple calculating and control functions. The LMM
contains onboard circuitry for eight digital inputs and eight
digital outputs. It also interfaces with up to 64 digital I/O
slaves through the slave expander bus for additional I/O capa-
bility. The logic master module communicates with other intel-
ligent modules in the system by means of the module bus. The
module bus provides a means to configure, tune, monitor, and
acquire data.
INTENDED USER
System engineers and technicians should read this manual
before installing and operating the logic master module. A
module should NOT be put into operation until this instruction
is read and understood. Refer to the Table of Contents or Index
to find specific information after the module is operating.
MODULE DESCRIPTION
The logic master module is a user-configured device that per-
forms digital control schemes. It communicates with digital
slave modules for inputs and outputs, and has a capacity to
handle a maximum of 1,024 I/O points. This microprocessor
based module resides in the INFI 90 system and provides the
ability to perform sequential logic control functions per the
system requirements. The module can be configured to any
control strategy desired using standard configuration tools and
a defined library of function codes. I/O is interfaced using digi-
tal input slaves.
MODULE APPLICATION
Control schemes are designed with operations from the INFI 90
Function Code Library, and stored in the module's on-board
memory.
In addition to executing control schemes, the module performs
self-tests, security functions and bus interfacing.
INSTRUCTION CONTENT
This manual consists of eight sections:
Introduction Is an overview of the LMM: Features, description and
specifications.

INTRODUCTION
HOW TO USE THIS MANUAL
1 - 2 I-E96-209A
®
Description and
Operation Explains module operation, input and control circuitry, and
configuration function codes.
Installation Describes precautions to observe when handling modules, and
setup procedures required before module operation. This sec-
tion discusses switch and jumper settings, and installation
procedures.
Operating Procedures Explains the front panel indicator, and start-up of the master
module.
Troubleshooting Describes the error indications and corrective actions to take.
Maintenance Has a maintenance schedule for modules and other INFI 90
assemblies.
Repair/Replacement
Procedures Details the procedures to replace an LMM.
Support Services Provides replacement part ordering information. It explains
other areas of support that Bailey Controls provides.
HOW TO USE THIS MANUAL
Read this manual through in sequence. It is important to
become familiar with the entire contents of this manual before
using the LMM. The manual is organized in sections to enable
finding specific information quickly.
1. Read and do the steps in Section 3.
2. Refer to Section 4 to evaluate operating indications.
3. Refer to Section 5 if a problem occurs.
4. Refer to Section 6 for scheduled maintenance
requirements.
5. Use Section 8 when ordering replacement parts.
REFERENCE DOCUMENTS
Number Document
I-E93-900-20
I-E93-903
I-E93-911
I-E96-308
I-E96-309
I-E96-310
I-E96-313
Function Code Application Manual
Configuration and Tuning Module
Termination Unit Manual
Pulse Input Slave Module
Digital Slave Module
Digital Slave Output
Digital Slave Output

INTRODUCTION
GLOSSARY OF TERMS AND ABBREVIATIONS
I-E96-209A 1 - 3
GLOSSARY OF TERMS AND ABBREVIATIONS
Term Description
CTM Configuration and Tuning Module. Provides a local means for system configuration,
tuning, and monitoring of intelligent masters over module bus.
CTT Configuration and Tuning Terminal. A handheld module with the same functionality
as the Configuration and Tuning Module.
Checksum A value computed from a data stream by treating each element as a number and
computing the sum of the elements.
Configuration The act of setting up equipment to accomplish specific functions or a list of parame-
ters associated with such a setup.
Controlway High speed, redundant, peer-to-peer communication link. Used to transfer informa-
tion between intelligent modules within a process control unit.
Dipshunt Dual in-line package with shorting straps.
Dipswitch A dual in-line package that contains switches.
EWS Engineering Work Station.
Executive Block Fixed function block that determines overall module operating characteristics.
Function Block The occurrence of a function code at a block address of a module.
Function Code An algorithm which manipulates specific functions. These functions are linked
together to form the control strategy.
LED Light Emitting Diode.
LSB Least Significant Bit. The bit of a binary number that carries the least numerical
weight.
Master Module One of a series of controller modules designed to direct field processes through a
slave module. The multi-function processor is an example.
MFT Machine Fault Timer. Reset by the processor during normal operation. If not reset
regularly, the MFT times out and the module stops.
MMU Module Mounting Unit. A card cage that provides electrical and communication sup-
port for INFI 90/Network 90 modules.
Module Bus Peer-to-peer communications link used to transfer information between intelligent
modules within the process control unit.
MSB Most Significant Bit. The bit of a binary number that carries the most numerical
weight.
NVRAM Nonvolatile random access memory. Retains stored information when power is
removed.
Node A point of interconnection to a network.

INTRODUCTION
GLOSSARY OF TERMS AND ABBREVIATIONS (continued)
1 - 4 I-E96-209A
®
GLOSSARY OF TERMS AND ABBREVIATIONS
(continued)
NOMENCLATURE
The following is a list of related hardware:
Term Description
OIS Operator Interface Station. Integrated operator console with data acquisition and
reporting capabilities. It provides a digital access into the process for flexible control
and monitoring.
PCU Process Control Unit. A node on the plant wide communication network containing
master and slave modules.
Plant Loop Network 90 data communication highway.
RAM Random Access Memory. Contents are lost when power is removed.
ROM Read Only Memory. Contents remain when power is removed.
Slave Expander
Bus Parallel communication bus between the master and slave modules.
TM Termination Module. Provides input/output connection between plant equipment and
the INFI 90/Network 90 modules.
TU Termination Unit. Provides input/output connection between plant equipment and the
INFI 90/Network 90 modules.
Nomenclature Hardware
Master Module
IMLMM02 Logic Master Module
I/O Modules
IMDSM04
IMDSM05
IMDSO01/02/03/04
IMDSI02
Pulse Input Slave Module
Digital Input Slave Module
Digital Slave Output
Digital Slave Input
Termination Units
NTDI01
NTDO02 Digital Input Digital Output
Termination Modules
NIDI01
NIDO01 Digital Input Digital Output
Cables
NKTU01
NKTM01
NKTU02
Cable from NTDI01/NTDO02 to IMLMM02
Cable from NIDI01/NIDO01 to IMLMM02
Cable from NIDI01/NIDO01 to IMLMM02

INTRODUCTION
SPECIFICATIONS
I-E96-209A 1 - 5
SPECIFICATIONS
Memory
Random Access Memory (RAM)
Read Only Memory (ROM)
Nonvolatile Random Access Memory
(NVRAM)
16 Kbytes
32 Kbytes
8 Kbytes
Power Requirements
Voltage
Current
+5 VDC (±5%)
525 mADC (maximum)
450 mADC (nominal)
Input Voltage Ranges
24 VDC Logic High
Logic Low
125 VDC Logic High
Logic Low
120 VAC Logic High
Logic Low
16.3 VDC (minimum)
6.0 VDC (maximum)
78 VDC (minimum)
26 VDC (maximum)
102 VACrms (minimum)
20 VACrms (maximum)
Input Current Ranges
24 VDC Logic High
Logic Low
125 VDC Logic High
Logic Low
120 VAC Logic High
Logic Low
1.70 mADC (typical)
1.94 mADC @ 27 VDC (maximum)
400 µADC (maximum)
1.82 mADC (typical)
2.02 mADC @ 135 VDC (maximum)
400 µADC (maximum)
1.74 mAACrms (typical)
1.94 mAACrms @ 132 VACrms (maximum)
380 µAAC (maximum)
Output Voltage
Logic High
Logic Low VI/O (24 VDC)
2.4 VDC (maximum)
Output Current
Logic High
Logic Low 10 µADC (maximum) 250 mADC (maximum)
Channel to Channel Isolation Voltage 250 VAC
Channel to Logic Isolation Voltage 250 VAC
Channel Isolation Voltage (Normal
Mode) 120 VAC
Surge Protection Meets IEEE-472-1974 Surge Withstand Capability Test
Execution Rates 10 to 40 milliseconds with internal resolution in 10 millisecond
increments. For periods greater than or equal to 50 millisec-
onds, the internal resolution is in 50 millisecond increments.

INTRODUCTION
SPECIFICATIONS (continued)
1 - 6 I-E96-209A
®
SPECIFICATIONS
(continued)
Certification CSA certified for use as process control equipment in an ordi-
nary (nonhazardous) location.
Environmental
Ambient Temperature
Relative Humidity
Altitude
Air Quality
0° to 70° C (32°to 158° F)
0% to 95% up to 55°C (131°F) (noncondensing)
0% to 45% at 70°C (158°F) (noncondensing)
Sea Level to 3 Kilometers (1.86 miles)
Noncorrosive
Mounting Occupies one slot in a standard INFI 90 Module Mounting
Unit.
Specifications are subject to change without notice.

INTRODUCTION
I-E96-209A 2 - 1
SECTION 2 - DESCRIPTION AND OPERATION
INTRODUCTION
This section explains the functions, module circuitry, data and
connections for the Logic Master Module (IMLMM02). It also
details the function codes available to configure an LMM.
FUNCTIONAL OPERATION
The logic master module consists of six major sections. They
are Memory, Module Bus Interface, Machine Fault Timer, Slave
Expander Bus Interface, Digital Inputs/Outputs, and the
Microprocessor, Timing and Control section. See Figure 2-1.
Microprocessor, Timing, and Control Circuitry
The logic master module uses a 68B09E microprocessor inte-
grated circuit operating at two megahertz. Based on the pro-
gram in ROM and the configuration in NVRAM, the processor
controls the functions of the I/O circuitry, slave expander bus
and module bus communication, as well as performing
onboard checks to verify internal integrity. Additional circuitry
provides the proper timing and clocks to run the processor and
other functions.
Module Bus Interface
The module bus interface on the logic master module allows it
to communicate with other INFI 90 modules in the same PCU.
Every module on the module bus has a unique address that
Figure 2-1. Logic Master Module Block Diagram
P1
P3
P2
TP21031A
SLAVE EXPANDER
BUS INTERFACE
DIGITAL INPUT/
OUTPUT
MODULE BUS
INTERFACE
MACHINE FAULT
TIMER
MEMORY
MICROPROCESSOR,
TIMING AND
CONTROL CIRCUITRY

DESCRIPTION AND OPERATION
FUNCTIONAL OPERATION
2 - 2 I-E96-209A
®
identifies the module. The device address for the logic master
module is set via an eight position dipswitch.
NOTE: The LMM cannot communicate over the controlway.
Slave Expander Bus Interface
The slave expander bus interface on the logic master module
allows it to communicate with up to 64 digital slave modules
that interface with additional I/O based on the user's require-
ments. The LMM reads and writes data and control informa-
tion to the slave modules over the slave expander bus. Each
slave module has a unique slave expander bus address that
must match that specified in the LMM's configuration. Dip-
shunts must be configured and installed on the MMU back-
plane between the LMM and associated slave modules. Refer to
Section 3 of this manual for details.
Memory
The onboard memory is 32K bytes of read only memory (ROM),
16K bytes of random access memory (RAM) and 8K bytes of
nonvolatile random access memory (NVRAM).
The ROM contains the function code library and the operating
system. The RAM serves two purposes: holding an operating
copy of the configuration when the module is in the execute
mode of operation and providing temporary storage for in-pro-
cess algorithms. The NVRAM contains the permanent copy of
the user's configuration. The logic master module's NVRAM
has the capacity for approximately 1,024 function blocks.
Machine Fault Timer
The Machine Fault Timer (MFT) is a resettable one-shot timer
that must be periodically retriggered by the microprocessor.
Several conditions detected by the microprocessor will keep it
from retriggering the MFT. They are:
1. Trip Block activated.
2. Failure of ROM checksum.
3. Failure of diagnostics at reset/power up time.
When the MFT is allowed to time-out, the microprocessor is
halted. The LMM will not respond over the module bus, and the
status LED changes to a solid red color. In addition, the digital
outputs are de-energized.
In the event of an NVRAM checksum failure, the module will
indicate error status. This means that the status LED will flash
on and off green, and will continue to execute all algorithms.
The module will enter error mode when reset.

DESCRIPTION AND OPERATION
SECURITY FUNCTIONS
I-E96-209A 2 - 3
Digital Inputs/Outputs
There are eight digital inputs and eight digital outputs
on-board. The inputs are jumper-selectable to be energized by
24 VDC, 125 VDC or 120 VAC. The inputs are optically-iso-
lated; outputs are optically-isolated open-collector type. The I/
O signals are routed to the NTDI01/NTDO02 TU or the
NIDI01/NIDO01 TM through the NKTU01, NKTM01, or
NKTU02 cable connection on the P3 card edge connector.
SECURITY FUNCTIONS
Two types of security functions are performed: module security
and control input security. Module security is provided by a
Machine Fault Timer (MFT) that is periodically reset by the
microprocessor. If, for whatever reason, the timer is not reset,
it shuts the module down, turns the front panel status LED
red, de-energizes the digital outputs and prevents the NVRAM
from being erased or written to. Control input security is pro-
vided by adding Function Code 31 (TEST QUALITY) to the con-
figuration. Each function block assigned Function Code 31 can
test the quality of up to four inputs. If the inputs are good, the
output of the TEST QUALITY block is set to Logic 0. If any of
the inputs are bad, the output of the block is set to Logic 1.
Logic within the configuration can initiate the necessary
alarms or appropriate actions.
Additionally, on-line tests are performed to verify proper hard-
ware operation. If any of these tests fail, the timer is not reset
and status LED turns red. NVRAM errors are handled differ-
ently since the module executes from a copy of the configura-
tion located in RAM. If an NVRAM checksum error is detected,
the module continues operating; however, the status LED
flashes green. After resetting the module, it will enter the error
mode.
CONFIGURATION
A configuration must be defined to determine the operations an
LMM performs on its input signals. This section explains the
function codes that can be used with an LMM. Function codes
are software algorithms that can be configured to define spe-
cific tasks. A function block in memory has a reference number
(block address) that can be used as an input reference by other
function blocks. The LMM processes defined function blocks in
ascending order.
NOTE: This instruction contains function codes specific to the
IMLMM02 only. The function codes defined in this section reflect the
function codes that were available at the time the instruction was
created. Refer to the latest
Function Code Application Manual
for
additional function codes.

DESCRIPTION AND OPERATION
CONFIGURATION
2 - 4 I-E96-209A
®
Function Blocks
NOTE: Refer to the
Function Code Application Manual,
I-E93-900-20
for the specifications and outputs of the LMM function
codes.
The range of function blocks for the logic master module is 0
through 1,023. Blocks 0 through 23 are reserved for the execu-
tive block and outputs of all the fixed address system blocks.
The executive block handles overall module operation. The
fixed address system block outputs can be used anywhere in
the configuration. Blocks 24 through 1,023 are user-assign-
able. Table 2-1 lists the outputs of the executive block.
Function Codes
The control strategy is designed with operations from the INFI
90 Function Code Library residing in ROM. Each code has a
set of parameters with default values. Change these values to
meet the requirements of your application. Table 2-2 lists the
Table 2-1. Executive Function Block Outputs
Block
Number Outputs
0 Logic 0
1 Logic 1
2 Reserved
3 -100.0
4-1.0
50.0
61.0
7 100.0
8 Maximum negative value
9 Maximum positive value
10 Start-up complete flag (0=no, 1=yes)
11 Reserved
12 System free time percent (updated every second)
13 Revision level
14 Reserved
15 Task no. 1 elapsed time of previous cycle (seconds)
16 Task no. 1 elapsed time of current cycle (seconds)
17 Task no. 1 processor utilization percent
18 NVRAM memory utilization percent
19 RAM memory utilization percent1
20-23 Reserved
NOTE: 1. The memory utilization percent for RAM is valid when block no. 10 out-
put = 1.

DESCRIPTION AND OPERATION
CONFIGURATION
I-E96-209A 2 - 5
executable functions. The block numbers column is the range
of user-assignable block numbers.
Table 2-2. Function Codes
Function
Code Description Block
Numbers
2 Manual Set Constant 24-1023
7 Square Root 24-1023
10 High Select 24-1023
11 Low Select 24-1023
12 High/Low Compare 24-1023
14 Sum-4 Inputs 24-1023
15 Sum-2 Inputs with Gain 24-1023
16 Multiply 24-1023
17 Divide 24-1023
25 Analog Input/Module Bus 24-1023
26 Analog Input/Plant Loop 24-1023
30 Analog Output/Plant Loop 24-1023
31 Test Quality 24-1023
32 Trip 24-1023
33 Not 24-1023
34 Memory (Set, Reset) 24-1023
35 Time Delay 24-1023
36 Qualified OR - 8 Input 24-1023
37 AND - 2 Input 24-1023
38 AND - 4 Input 24-1023
39 OR - 2 Input 24-1023
40 OR - 4 Input 24-1023
41 Digital Input/Module Bus 24-1023
42 Digital Input/Plant Loop 24-1023
45 Digital Output/Plant Loop 24-1023
46 Digital Input List (8)/XR 24-1016
49 Digital Output Buffer (NOP) 24-1023
50 Manual Set Switch 24-1023
59 Transfer, Digital 24-1023
61 Blink 24-1023
62 Remote Control Memory 24-1023
64 Digital Input List (8)/Module Bus 24-1016
65 Digital Sum - 4 Input 24-1023
83 Digital Output Group 24-1023
84 Digital Input Group 24-1016