5_ LL984 Editor and

Legacy Upgrade Agenda
● Hardware Upgrade Overview
20 minutes
● Legacy Application Import Tool
60 minutes
● Add Quantum Ethernet DIO drops 45 minutes
● Add new X80 Ethernet DIO drops
45 minutes
● LL984 Editor and Unity Overview
60 minutes
Legacy Application – LL984 Editor
What are the topics:
●Segment and Networks
● Online
Segments & Networks
What are the topics:
● User Interface – same ‘Look and Feel’
● Segment Scheduler
● Logic Solve Order
● Adding LL984 Logic
● View Modes of LL984 Editor Networks
● Documentation Import
● Hybrid Application
User interface has same ‘Look and Feel’
• Same ‘look and feel’ with the 7 x 11 Nodes in each Network
• Instruction bar (with XMIT) and Tool Bar
• Now up to 64 Segments and 2000 Networks
LL Icon,
gray =
empty network
7 x 11
Segment Scheduling
Unity Segment 1
Remote Drop Number:
Black = Drop is configured
Red = Drop is not configured
Unity Segment 4
Logic Solve Order
LD IEC will solve this logic _1, _2, _3
Then _4, _5, _6.
LL984 in Unity will solve this logic _1, _2, _3,
_4, Then _5 and _6
Free Formed
Text boxes
are allowed
in the LL984
Adding LL984 Logic
When adding an instruction it will be Blue
when it is invalid data and will not build, it will also
have a Red ~~~ under it.
When the add instruction has valid references
it will be Black and have no Red ~~~
View Modes of LL984 Editor Networks
Documentation Import
Network Comment
Descriptor Comments
Short Comment
Long Comment
IEC and LL984 mixed
LL984 and IEC applications are allowed and the Sections can be intermixed. This is a
Concept application Import
Lab Exercise – Networks and Segments
At the completion of this module the participant should be able to:
● Navigate Unity Pro project using the Project Browser.
● Access LL984 editor networks
● Create variable in LL984 editor
● Look-up Segment Scheduler through Remote IO Properties
What will we discuss:
• Network Power Flow
• Animation Tables
• Forced Booleans
• Imported Forced Booleans
• Show Instruction
Network Power Flow
PLC in Run
Contact %I1153
(_101153) displays
both Power and
State flow
Highlighted contact information
● Power & State Flow display in one place
PLC Stopped
When the PLC
is stopped
Power flow is
no longer
The last
scan State
is displayed
Animation Tables (Data Watch Window, RDE etc.)
● Animation Tables are easy to create
● The easiest way is CTL A, CTL T, this will create an animation of the current network
● Or you can rubber band the logic (selecting multiple nodes while holding down Shift
Key), then right click and select Initialize Animation Table
● Or you can manually enter the references
● Additionally, if you need to view a Real (float) enter %MFx (x=1st %MW) in the Name
column of the Animation Table
Forced Booleans
Forced nodes will have a
box around the displayed
address, 984 address or
variable and the color
indicates the state
In the animation table
select Force then the
desired state
In logic, right click
on the node and
force to the desired
state or unforce
● You can easily force your contacts and coils
● Force either while viewing the logic or from the Animation Table
● Unity allows Forcing/ Unforcing and state changes with Memory Protect on
Imported Forced Booleans
Select: Force
Select: Swap to Multiple Mode
Select: Executes Multiple
Identified that there are
Forced Bool’s in the
Show Instruction (Register Editor, Instruction Editor etc.)
Right click on
the instruction
then select
Show Instruction
will display its
“zoom” screen.
You must be built
and Online to use
this feature.
Lab Exercise 4 – Online
At the completion of this module the participant should be able to:
● Create Animation Table from Project Browser.
● Create Animation Table from logic section.
● Selectively create an Animation Table from logic section.
● Utilize Forced Boolean tools
Legacy Application – Tools and Advantages
What are the topics:
● Unity Tools
● Unity Advantages
Unity Tools
What will we discuss:
● Searching
● Locate Writing and Reading
● Bookmarks
● Online Help
● Imported Forced Booleans
● Show Instruction
Direct: Highlight and Right Click
Enter the address in the
search window of use
the list box
Custom Search by
accessing the Data
Search Navigation
Cross reference
element location
Causes a jump to
either the previous or
next instance
Cross reference
element operation
Jumps to the
highlighted instance
Jumps to the next or
previous instance
Locate Writing and Reading (Trace/Retrace)
Locate Writing
Locate Reading
•Trace/Retrace highlights the nodes and creates automatic bookmarks. There is also a bookmark
table created, it can be found in Tools >> Bookmarks.
Double left
click then
rename (be
both, can be
disabled by
When disabled
they will be
skipped when
They will then
be light gray.
The bookmark with the arrow is
the current selected bookmark
To add a bookmark
place the cursor on
the row location in the
bookmark column right
click and Toggle
Bookmark. It can be
removed by repeating
Toggle Bookmark.
● Bookmarks allow you to tag specific rows in the networks and then quickly transition from
one bookmark to next
● They are saved with the project
On Line Help
Lab Exercise – Unity Tools
At the completion of this module the participant should be able to:
● Navigate the Search results for references, addresses, and variables.
● Establish Bookmarks in the program.
● Trace and Retrace ladder logic.
● Access Help on Type available for the LL984 Editor and LL984
Unity Advantages
What will we discuss:
● Derived Data Types
● Derived Function Blocks
● Events
● Diagnostics
● Operator Screens
● Data Dictionary
Derived Data Types (DDT’s)
DDT’s allow you to create custom arrays (mixed data types)
These arrays can be referenced many times.
Example of a tank
Without the uses of Derived Data Types
You would create the following variables
for each tank:
Flow Meter
Aux Input
● Tank_High_Float
● Tank_Low_Float
● Pump_Contactor
● Pump_Aux_Input
● Discharge Flow_Meter
If the application had 10 tanks, that
would be 50 variables.
Using DDT’s in Unity for the same example
1. Create the DDT named “Tank_System”
2. Create one variable “Soap_Tank” which is an array of 10 of the DDT “Tank_System”
Done, All 50 variables created in two steps complete with documentation. Referenced
in logic:
Derived Function Blocks (DFB’s)
Used for repetitive logic, create a DFB that internally contains the required logic. Now the
block can be used many times to control.
Tank Farm Example: The Derived Function Block has 5 logic sections which controls
one tank. Enter the DFB 10 times in the logic with the proper references and all 10 tank
have been programmed.
Events (Timer and I/O)
Event Timers or I/O Events programmed in a Structured Text Section.
This Timer Event ST code accumulates all of the flow from each tank flow meter
every second.
Diagnostics (%S and %SW)
● Benefits of System Words (%SW) and System Bits (%S), extensive bit and
word level diagnostics information
● LL984 STAT block is not needed because PLC and I/O status is in %SW’s and
Diagnostics (Diagnostics Viewer)
It is a tool that is built into Unity
The information can be synchronized with up to external 16 devices (like HMIs) by creating
a DFB using the Diagnostics instructions
Operator Screens
Virtually any
HMI screen
can be
displayed in
the Unity
screens are
not loaded
into the PLC.
Data Dictionary
Create all your tags in Unity
using data dictionary and then
those tags are available in:
● FactoryCast (Web Pages)
● Vijeo Designer (HMI)
PlantStruxure also provides
single database access
between Unity and Citect
Configured under Tools >>
Project Settings >> General
>> PLC diagnostics and PLC
embedded data
Lab Exercise – Unity Advantages
At the completion of this module the participant should be able to:
● Create (Derived Function Blocks) DFBs and explain advantages.
● Combine (Derived Data Types) DDTs with DFBs.
● Add new DFB using FBD program editor.
● Create new variable using user defined DDT
● Add entire sections of new logic using proven, tested, DFB logic.

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