MicroMod Totalization-IB-MLAPP-TOT Owner's Manual

Totalization for MOD 30ML
and Modcell
Application Guide
MicroMod Automation, Inc.
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Using The Totalizer Block
Contents
CONTENTS
INTRODUCTION ................................................................................................................................................. 2
SCOPE ............................................................................................................................................................... 2
FIRMWARE VERSIONS ..................................................................................................................................... 2
RELATED INFORMATION.................................................................................................................................. 2
DESCRIPTION .................................................................................................................................................... 3
GENERAL........................................................................................................................................................... 3
BASIC THEORY OF BLOCK OPERATION......................................................................................................... 3
BUILDING THE STRATEGY ............................................................................................................................... 9
BUILDING A WORKING TOTALIZER STRATEGY WITH DISPLAY ................................................................... 9
APPLICATION 1 - TOTALIZER AND PID............................................................................................................ 9
Placing The Blocks & Making Connections ...................................................................................................... 9
Adding a totalizer block to the compound......................................................................................................... 9
Making connections between the totalizer block and PID block. ..................................................................... 10
Modifying blocks to meet this application. ...................................................................................................... 10
Adding Communications ................................................................................................................................ 13
Display Operation .......................................................................................................................................... 13
APPLICATION 2 - TOTALIZER AND PID WITH SEPARATE COMMANDS MENU........................................... 14
Placing The Blocks ........................................................................................................................................ 14
Adding a totalizer block to the compound....................................................................................................... 14
Adding the totalizer commands display. ......................................................................................................... 15
Making connections between blocks. ............................................................................................................. 15
Modifying the blocks. ..................................................................................................................................... 15
Adding Communications ................................................................................................................................ 19
Display Operation .......................................................................................................................................... 20
FIGURES
1
2
3
3
4
5
6
7
TOTALIZER BASIC FUNCTIONAL BLOCK DIAGRAM.................................................................................................... 4
TOTALIZER BLOCK, PAGE 1 ................................................................................................................................. 7
TOTALIZER BLOCK, PAGE 2 ................................................................................................................................. 7
DISPLAY SCRIPT ............................................................................................................................................... 12
STATE TABLE DATA .......................................................................................................................................... 12
PID DISPLAY BLOCK SCRIPT ............................................................................................................................. 17
TOTDISP DISPLAY BLOCK SCRIPT .................................................................................................................... 18
STATE TABLE DATA .......................................................................................................................................... 19
TABLES
1
2
3
4
5
6
EDIT INPUTS DATA, PIDDISP BLOCK ................................................................................................................. 10
EDIT DISPLAY FORMAT DATE ............................................................................................................................. 11
EDIT INPUTS DATA, PIDDISP BLOCK ................................................................................................................. 16
EDIT DISPLAY FORMAT DATA, PIDDISP BLOCK .................................................................................................. 16
EDIT INPUTS DATA, TOTDISP BLOCK................................................................................................................ 17
EDIT DISPLAY FORMAT DATE, TOTDISP BLOCK ................................................................................................. 18
1
Using The Totalizer Block
Introduction
INTRODUCTION
SCOPE
This book is one of a series that discusses the application of MOD 30ML™ to commonly
encountered process control applications. This particular book discusses how to implement the
totalizer block in MOD 30ML.
Included in this publication is a functional description and configuration instructions for a typical
application using a totalizer block in a PID application.
FIRMWARE VERSIONS
The application example in this book is applicable to MOD 30ML firmware Version 2.0 and
above.
RELATED INFORMATION
Before actually configuring an instrument, you should be familiar with the information contained in
the following publications:
2
•
IB-1800R-OPR: MOD 30ML Multiloop Controller Operation Guide
•
IB-1800R-APP: MOD 30ML Functions Data Base Reference Guide
•
IB-1800-INS: MOD 30ML Multiloop Controller Installation Guide
or
•
IB-1800-M30: MOD 30ML Multiloop Controller Replacement for MOD 30 Instruments
Installation Guide
•
IB-23G602 (Issue 3 or later): Logic Functions Book 2 (Section 8.10, Totalizer)
Using The Totalizer Block
Description
DESCRIPTION
GENERAL
Many flow applications require simultaneous control and totalization of the process. In the past a
separate device was commonly used for totalization while flow control was left to a PID controller.
If there was to be any interaction or relationship between the two devices it was often difficult if
not impossible to implement. MOD 30ML can provide accurate PID control and totalization for
multiple loops. MOD 30ML’s versatile display permits a variety of display options whereby the
totalizer, totalizer commands and PID can be combined on the same tag or may be split to
multiple tags.
This document will provide an understanding as to how to implement a totalizer block including
various display options. Also included are display options for totalizer commands to reset, stop,
hold and run the totalizer.
BASIC THEORY OF BLOCK OPERATION
Figure 1 shows a functional block diagram of the totalizer block. The following paragraphs
provide information relative to block connections and in many cases examples of where that
connection might be used.
Analog Input
This is the input to the totalizer. It is this value that the totalizer will totalize to. This input would
normally come from the process input that is sent to the PID block. Inputs may be any floating
point Logical Source Pointer (LSP) or may be fixed as a local value. You may use the local value
input to troubleshoot your totalizer strategy.
Direction Input
Selected as either up or down. If set as up the totalizer will increment from the low limit value. If
set to down the totalizer will decrement from the high limit value. The direction may be fixed at
configuration time or may be changed from an external source such as a digital input or descrete
LSP from within the instruments strategy.
Reset Input
This is a discrete input command which if used would normally be sourced from a LSP such as a
momentary digital input like a remotely mounted push button. The Reset action takes place when
the reset input transitions from false to true. This causes the totalizer to be reset to the low limit if
the totalizer direction is up or to the high limit if the totalizer direction is down. Additionally, the
totalizer mode will be set to Run.
Stop Input
This is a discrete input command which if used would normally be sourced from a LSP such as a
momentary digital input like a remotely mounted push button. The Stop action takes place when
the stop input transitions from false to true. This causes the totalizer to be reset to the low limit if
the totalizer direction is up or to the high limit if the totalizer direction is down. Additionally, the
totalizer mode will be set to Hold. The totalizer will not continue to count until told to Run.
3
Using The Totalizer Block
Description
Figure 1. Totalizer Basic Functional Block Diagram
Run Input
This is a discrete input command which if used would normally be sourced from a LSP such as a
momentary digital input like a remotely mounted push button. The Run action takes place when
the Run input transitions from false to true. This causes the totalizer mode to be set to Run from
a Hold or Stop mode.
Hold Input
This is a discrete input command which if used would normally be sourced from a LSP such as a
momentary digital input like a remotely mounted push button. The Hold action takes place when
the Hold input transitions from false to true. This causes the totalizer mode to be set to Hold at
the current totalized value until such time the totalizer mode is again set to Run.
Auto Wrap
Typically set at time of configuration. Setting the Auto Wrap to yes causes the totalizer to wrap
around to the opposite limit after it has reached its primary limit. After it wraps the totalizer will
continue to count. For example: a totalizer is counting up and reaches an upper limit of 5000. If
the lower limit is 100 then when the totalizer reaches 5000 it will wrap to 100 and continue
counting up. In this example the High Limit Status line would momentarily go high and could be
4
Using The Totalizer Block
Description
used to increment a counter identifying how many times the totalizer has wrapped. The High
Limit Status line will reset to false on the next block execution if Auto Wrap is set to yes.
Threshold
Typically set at time of configuration. This is the value in engineering units by which the Analog
Input (totalizer input) must exceed before the totalizer will count. The purpose of this feature is to
ignore the counting of unwanted process or transmitter drift.
Command
The Command input is typically used with the MOD 30ML display block or when sending either a
Reset, Stop, Run or Hold command from a host such as a PC. Commands sent to this input are
long state data types and should be momentary. When the Command line is read from the
totalizer block it will always be 0. Sending the following long state values to the Commands input
causes the following associated action to happen.
Value
1
2
3
4
Action
Reset
Stop
Run
Hold
Restart Mode
Typically set at time of configuration. This is the mode of the totalizer block when the instrument
is initialized after a cold or frozen restart and the controller is set to hold. For example: If the
warm start period is set for 30 minutes (warm start parameter is set in the IF Block) and the
Restart Mode of the Totalizer block is set for Hold and then power is lost, if the power is restored
after 30 minutes the block will come back in the Hold mode. If the power down time is less than
30 minutes the totalizer will resume with the mode prior to power loss.
Predetermined Count 1 & 2
The predetermined count value is set at configuration time. When the totalized value is equal to
or greater than the predetermined value its associated Predetermined Status line will be set to
true. If counting down and requiring a status true when the count is below the predetermined
value, invert the status signal in an Expression block. An example of where to use a
predetermined count is in a ratio application to cause valve closure at a particular totalized value
while continuing to totalize other ingredients which may still be flowing. Two predetermined count
values are provided in case multiple points are needed.
Rate
Typically set at time of configuration. This is the time units used in interpreting the input value.
Rate may be determined as either Seconds, Minutes, Hours or Days. Rate only applies when the
Input Type is Analog (not with Pulse). For example: If an inputs engineering units are 0 - 100 and
the Rate was set at Minutes, with 100% input there would be a count of 100 at the end of one
minute. Note: this calculation is affected by the Scale Factor.
Scale Factor
Typically set at time of configuration. This feature permits custom scaling of a totalized count. A
Scale Factor of 1 causes an unaffected count. A Scale Factor of 10 divides the total by 10 and a
Scale Factor of 0.1 multiplies the total by 10. For example: In our above example, if an inputs
engineering units were set at 0 - 100, the Rate was set at Minutes and the Scale Factor was set
at 0.1 then, with 100% input there would be a count of 1000 at the end of one minute.
5
Using The Totalizer Block
Description
High Limit
Typically set at time of configuration. This is the value at which a totalizer counting up will stop
counting at. If the up counting totalizer is set to Wrap, then this is the value that will cause the
wrap to happen. It is also the value at which a totalizer counting down will reset to in the event of
a Reset command.
Low Limit
Typically set at time of configuration. This is the value at which a totalizer counting down will stop
counting at. If the down counting totalizer is set to Wrap, then this is the value that will cause the
wrap to happen. It is also the value at which a totalizer counting up will reset to in the event of a
Reset command.
Total Count
This is the calculated totalized output of the totalizer block. This is the floating point value
typically used for display. The minimum value is 0.0 and the maximum value is 9999999.0.
High Limit Status and Low Limit Status
These outputs provide indication if either a high or low limit within the totalizer has been reached.
When a limit has been reached its respective status output is set true. When the totalized value is
reset the status output will go false.
Predetermined Count 1 & 2 Status
These outputs provide indication if either a Predetermined Count 1 or Predetermined Count 2 has
been reached within the totalizer. When the totalized count equals or exceeds a Predetermined
Count its respective status output is set true. When the totalized value is less than the
Predetermined Count its status output will go false.
Mode
Typically set at time of configuration. Indicates the mode of the totalizer block. Normally it is set
to Run but may be set to Hold.
Figures 2 and 3 show the inside of the Totalizer block. Of particular interest is the Initial Values.
These settings are used by the Totalizer block on its first execution cycle after a configuration
has been downloaded into the instrument.
6
Using The Totalizer Block
Description
Figure 2. Totalizer Block, Page 1
Figure 3. Totalizer Block, Page 2
7
Using The Totalizer Block
Description
8
Using The Totalizer Block
Building the Strategy
BUILDING THE STRATEGY
BUILDING A WORKING TOTALIZER STRATEGY WITH DISPLAY
You must be inside a loop compound to build this strategy. It is assumed that the user of this
document has a basic understanding of Application Builder software.
The totalizer and PID parts of the strategy are relatively straight forward. We will offer two
different display options in this application document.
If your Application Builder is version 5 or newer the Compounds directory will offer two
PID/totalizer display compounds (PIDTOT1.CSM and PIDTOT2.CSM). Both compounds include
a single loop PID and totalizer function. PIDTOT1.CSM uses one display tag for the PID,
totalized value and totalizer command functions. This functionality is probably the most common
display used for a PID and totalizer application. PIDTOT2.CSM places the PID and totalized
value on one tag display and the totalizer command functions on a second display tag. If you
don’t find these compounds, the following instructions will help you build the PID, totalizer and
display(s) from scratch.
APPLICATION 1 - TOTALIZER AND PID
This first application will include the totalizer display and its command functions on the same
display tag as the PID display. This is handy because the operator does not have to leave the
PID display to see the totalized value or to use the totalizer commands.
Placing The Blocks & Making Connections
As a shortcut we will be loading a direct connect PID loop compound from the compounds library.
This compound already includes a basic single loop PID with input and output blocks, display,
alarms and a tune list blocks.
1. Select the Compounds icon
using the right mouse key.
2. From the sub-menu select the Load icon
.
3. Select the COMPOUND directory.
4. From the COMPOUND directory select the compound block file entitled BASICPID.CSM.
5. Press OK.
6. When asked to save occurrence numbers, say No.
7. You should have a blue Direct Connect Compound on your PC screen. Double click on the
compound to open it.
Adding a totalizer block to the compound.
from the top of the screen.
1. Select the Library icon
2. Select ALGORITHMS.
3. On the left side of the screen, from the algorithms menu select and drag to the work area a
Totalizer block
.
9
Using The Totalizer Block
Building the Strategy
Making connections between the totalizer block and PID block.
1. Select the connection
tool.
2. Select the PID block. A sub-menu will appear.
3. Press “NEXT” twice.
4. Select the PVI attribute from this menu.
5. Select the Totalizer block. A new sub-menu will appear.
6. Select ANALINP attribute from this menu. The totalizer now has an input for totalizing.
7. Select the CMD attribute from the Totalizer block.
8. Connect it to I10 of the Display block. This permits display access to the run, hold, stop and
reset commands of the totalizer.
9. Select the TC command from the Totalizer block .
10. Connect it to I4 of the Display block. This is the totalized value to be displayed.
Modifying blocks to meet this application.
1. Press the right mouse key to drop the connection tool.
2. Enter the Totalizer block by double clicking on the block.
3. Enter the appropriate rate, threshold, etc. information for your particular application.
.
4. Close the Totalizer block by clicking on
5. Enter the Display block by double clicking on the block.
6. Enter your loop tag name (ex.: FIC-100) in the Display Tag field. Later we will place this
same tag name in the tag list of the DIF block.
and enter the information from Table 1.
7. Enter
Table 1. Edit Inputs Data, PIDDISP Block
Input
No.
004
005
007
010
Input Name
Type
Line
Format
TOTAL
ACTION
DELTA
CMDINP
Remote1
Local
Local
Remote1
TotalL
ActionL
Local Data
Type
Local
Data
Value
Count
Shortstate
0
0
1
Changes to Remote automatically happen when an external connection is made.
8. Click on the red diamond in the upper left corner of the Edit Inputs menu to close it.
9. Select
.
10. Enter the information from Table 2 into the appropriate fields of formats F8 and F9
respectively.
10
Using The Totalizer Block
Building the Strategy
Table 2. Edit Display Format Date
Format
Name
Display
Format
Low
Limit
High limit
Entry
Method
TotalL
ActionL
Float0
State
0
1000000.0
None
Ent. Req.
Display
State
Table
Entry
State
Table
ActionD
ActionE
11. Click on the red diamond in the upper left corner of the Edit Display Formats menu to close it.
12. Select
.
13. Modify the existing Display block script to appear as that in Figure 3. Script comments are
not required but can be useful during future trouble shooting. Script comments are identified
with a prefix of /* and suffix of */.
DEFAULTS:
{
MANUAL_PRESSED:
{
IF OPMS != 3 THEN
{
OPMS = 0;
#LINE5 = " OP";
#LINE6.SRC = OP;
}
}
AUTO_PRESSED:
{
IF OPMS != 3 THEN
OPMS = 1;
}
SCROLL_PRESSED:
{
#UPDN = 7;
/* display up, /, and down */
IF SCRLCNT >= 2 THEN
SCRLCNT = 0;
ELSE SCRLCNT = SCRLCNT + 1;
CASE SCRLCNT OF
{
0:
#LINE5 = " OP";
#LINE6.SRC = OP;
BREAK;
1:
#LINE5 = " SP";
#LINE6.SRC = SP;
BREAK;
2:
#LINE5 = "TOT";
#UPDN
= 1;
/* display only up symbol */
#LINE6.SRC = TOTAL;
BREAK;
}
}
UP_PRESSED:
{
/* changes function of up key */
IF SCRLCNT == 2 THEN
/* when line 5 is displaying TOT */
#LINE6.SRC = ACTION;
#UPDN = 7;
}
ACTIVE:
{
IF ACTION && !DELTA THEN
{
CMDINP = ACTION;
/* sends ACTION value to totalizer CMD */
DELTA = 1;
/* input then resets it to zero */
11
Using The Totalizer Block
Building the Strategy
}
/* so as not to cause continuos sends */
/* of the ACTION value. */
IF DELTA THEN
/* The CMD register will always be zero */
{
ACTION = 0;
/* display totalizer value when ACTION */
DELTA = 0;
/* command is entered to confirm entry */
#LINE5 = "TOT";
#LINE6.SRC = TOTAL;
#UPDN = 1;
}
}
}
Figure 3. Display Script
14. Save and exit from the display scripts.
15. Click on
to close the Display block.
16. Click twice on the blue diamond in the upper left screen to find the DIF block.
17. Open the DIF block.
.
18. Select
19. Enter the Display Tag name as it was entered in the Display Tag field of the Display block.
Enclose the tag name with quotation marks and finish it with a semi-colon. For example:
“FIC-100”;.
20. Exit and save the display list.
to “User” and enter the Display Tag name in the
21. Set the
This causes the instrument to come up after a power loss with your new display.
22. Close the DIF block by selecting
.
.
23. Enter the State block and select
24. At the bottom of the state table list add the two state tables found in Figure 4.
ACTIOND, 8, “????????”
{
0, “EXIT”;
}
ACTIONE,
{
5,
1,
2,
3,
4,
}
8, “????????”
“EXIT”;
“RESET”;
“STOP”;
“RUN”;
“HOLD”;
Figure 4. State Table Data
25. Exit and save the state table list.
26. Close the State Table block by selecting
12
.
field.
Using The Totalizer Block
Building the Strategy
Adding Communications
1. Select the Library icon.
2. Select Communications from the library menu.
3. On the left side of the screen select the communications block required for the protocol being
used. Select either a Modbus or ICN block.
4. Place the block near the loop compound.
5. Open the block and set the slot location. For example: If you are using the on-board channel
of serial communications and are configuring the instrument from the front port the Modbus
block slot location will be “On-board”.
6. Compile the configuration and download it into the instrument.
Display Operation
Unless other changes were made in the strategy to cause a different behavior, the instrument will
come up in a manual mode with a local set-point. The output is displayed on the bottom line.
Pressing the scroll key once causes the set-point to be displayed on the bottom line. Pressing the
scroll key a second time causes the totalized value to be displayed on the bottom line and an up
arrow to be illuminated.
To enter the totalizer commands menu, press the up key while the totalized value is being
displayed on the bottom line. The action of “RESET” will appear on the bottom line and “ENT” will
flash next to the scroll key. Pressing the enter key (scroll key) causes the reset operation to be
enacted and transfers the operator to the totalizer display. If the enter key is not pressed the
action will time out, reset will not be enacted, and the operator will be prompted to exit the
totalizer commands menu.
This same operation applies to the STOP, RUN and HOLD commands. Each of these commands
are accessed after entering the totalizer commands menu and pressing the up key for each
command.
Pressing the enter key when “EXIT” is displayed on the bottom line causes the totalizer
commands menu to close returning the operator to the totalized value display.
13
Using The Totalizer Block
Building the Strategy
APPLICATION 2 - TOTALIZER AND PID WITH SEPARATE COMMANDS MENU
Application 2 will include the totalized value as part of the PID display. However, the totalizer
commands menu is assigned to a separate display tag.
You must be inside a loop compound to build this strategy.
Placing The Blocks
As a shortcut we will be loading a direct connect PID loop compound from the compounds library.
This compound already includes a basic single loop PID with input and output blocks, display,
alarms and a tune list blocks.
using the right mouse key.
1. Select the Compounds icon
2. From the sub-menu select the Load icon
.
3. Select the COMPOUND directory.
4. From the COMPOUND directory select the compound block file entitled BASICPID.CSM.
5. Press OK.
6. When asked to save occurrence numbers, say No.
7. You should have a blue Direct Connect Compound on your PC screen. Double click on the
compound to open it.
8. Open the display block by double clicking on the block.
9. In the Block Tag field enter “PIDDISP”.
10. Close the block by clicking on
.
Adding a totalizer block to the compound.
1. Select the Library icon
from the top of the screen.
2. Select ALGORITHMS.
3. On the left side of the screen, from the algorithms menu select and drag to the work area a
block.
4. Enter the Totalizer block by double clicking on the block.
5. In the Block Tag field enter “Total”. This name will appear on the outside of the block.
6. Close the block by clicking on
14
.
Using The Totalizer Block
Building the Strategy
Adding the totalizer commands display.
1. Select the Library icon from the top of the screen again.
2. Select SYSTEM.
3. On the left side of the screen, from the system menu select and drag to the work area a
block. Place it above the Display block.
4. Enter the block.
5. In the Block Tag field enter “TOTDISP”.
6. Close the block by clicking on
.
Making connections between blocks.
1. Select the connection
tool.
2. Select the PID block. A sub-menu will appear.
3. Press “NEXT” twice.
4. Select the PVI attribute from this menu.
5. Select the Totalizer block. A new sub-menu will appear.
6. Select ANALINP attribute from this menu. The totalizer now has an input for totalizing.
7. Select the totalizer block again.
8. Select TC (totalized count) from the connection menu.
9. Connect the TC attribute to I10 of the PID display block.
10. Select the CMD attribute from the Totalizer block.
11. Connect it to I4 of the Totalizer Commands Display block (TOTDISP). This permits display
access to the Run, Hold, Stop and Reset commands of the totalizer.
12. Select the TC attribute from the Totalizer block.
13. Connect it to input I1 of the Totalizer Commands Display Block (TOTDISP).
14. Click on the right mouse key to drop the connection tool.
Modifying the blocks.
1. Enter the Totalizer by double clicking on the block.
2. Enter the appropriate rate, threshold, etc. information for your particular application.
3. Close the Totalizer block by clicking on
.
4. Enter the PIDDISP Display block.
5. In the Display Tag field enter the loop tag name of your choice. This is the loop identification
that will appear on the front of the instrument while operating that particular loop. This same
name will be entered into the Display Tag List of the DIF block.
6. Enter
and enter the information from Table 3.
15
Using The Totalizer Block
Building the Strategy
Table 3. Edit Inputs Data, PIDDISP Block
Input
No.
I10
1
Input Name
Type
TOTAL
Remote1
Line
Format
TOTALL
Changes to Remote automatically happen when an external connection is made.
7. Close the Inputs menu by clicking on the red diamond in the upper left corner of the block.
.
8. Select
9. Enter the information from Table 4 into field format F8.
Table4. Edit Display Format Data, PIDDISP Block
Format
Name
TOTAL
Display
Format
Float0
Low
Limit
0
High limit
10000000.0
Entry
Method
None
10. Close the Display Formats menu by clicking on the red diamond in the upper left corner of
the block.
11. Select
.
12. Modify the existing Display block script to appear as that in Figure 3.
DEFAULTS:
{
MANUAL_PRESSED:
{
IF OPMS != 3 THEN
{
OPMS = 0;
#LINE5 = " OP";
#LINE6.SRC = OP;
}
}
AUTO_PRESSED:
{
IF OPMS != 3 THEN
OPMS = 1;
}
SCROLL_PRESSED:
{
IF SCRLCNT >= 2 THEN
SCRLCNT = 0;
ELSE SCRLCNT = SCRLCNT + 1;
CASE SCRLCNT OF
{
0:
#LINE5 = " OP";
#LINE6.SRC = OP;
BREAK;
1:
#LINE5 = " SP";
#LINE6.SRC = SP;
16
Using The Totalizer Block
Building the Strategy
BREAK;
2:
#LINE5 = "TOT";
#LINE6.SRC = TOTAL;
BREAK;
}
}
SCROLL_HELD:
{
TUNE;
}
}
Figure 5. PID Display Block Script
13. Exit and save the Display block scripts.
14. Click on
to close the PIDDISP Display block.
15. Enter the TOTDISP Display block.
16. In the Display Tag field enter the loop tag name of your choice for the totalizer commands
display. This is the loop identification that will appear on the front of the instrument when on
the Totalizer Commands display is called up. This same name will be entered into the
Display Tag List of the DIF block.
17. Set line 2 to VARIABLE.
18. In the second column to the right of line 2 type “TOTAL”. This causes line 2 of the display to
get an input called TOTAL.
19. Leave line 5 at CONSTANT and type “CMD” into the first field. The word CMD will always
appear in line 5.
20. Set line 6 to VARIABLE.
21. In the second column to the right of line 6 type “ACTION”. This causes line 6 of the display to
show the state names associated with an input called ACTION.
and enter the information from Table 5.
22. Enter
Table 5. Edit Inputs Data, TOTDISP Block
Input
No.
I1
I2
I3
I4
1
Input Name
Type
TOTAL
ACTION
DELTA
CMDINP
Remote1
Local
Local
Remote1
Local data
Type
Valu
e
Shortstate
Shortstate
0
0
Line
Format
TOTALL
ACTIONL
Changes to Remote automatically happen when an external connection is made.
23. Close the Inputs menu by clicking on the red diamond in the upper left corner of the block.
24. Select
.
25. Enter the information from Table 6 into the appropriate fields of format F1 and F2
respectfully.
17
Using The Totalizer Block
Building the Strategy
Table6. Edit Display Format Date, TOTDISP Block
Format
Name
Display
Format
Low
Limit
High limit
Entry Method Display
Entry State
State Table Table
TOTALL
ACTIONL
Float0
State
0
1000000.0 None
Entry Req’d
ACTIOND
ACTIOND
26. Close the Display Formats menu by clicking on the red diamond in the upper left corner of
the block.
.
27. Select
28. Add Display block script to appear as that found in Figure 6.
DEFAULTS:
{
ACTIVE:
{
IF ACTION && !DELTA THEN
{
CMDINP = ACTION;
DELTA = 1;
}
ELSE IF DELTA THEN
{
ACTION = 0;
DELTA = 0;
}
}
}
Figure 6. TOTDISP Display Block Script
29. Exit and save the Totalizer Commands display script.
.
30. Close the TOTDISP block by selecting
31. Click twice on the blue diamond in the upper left screen to find the DIF block.
32. Open the DIF block.
.
33. Select
34. Enter the Display Tag names for the PIDDISP and TOTDISP Display blocks as they were
entered in the Display Tag field of each Display block. Enclose each tag name with quotation
marks and finish it with a semi-colon. For example: “FIC-100”;. The order in which you enter
the two names will be the order in which they will appear on the instrument display when the
TAG key is pressed.
35. Exit and save the display tag list.
36. Set the
Display block in the
the PID display.
to “User” and enter the Display Tag name of the PIDDISP
field. This causes the instrument to come up after a power loss with
37. Close the DIF block by selecting
38. Enter the State block and select
18
.
.
Using The Totalizer Block
Building the Strategy
39. At the bottom of the state table list add the following table.
ACTIOND, 8, "????????"
{
0, "NONE";
1, "RESET";
2, "STOP";
3, "RUN";
4, "HOLD";
}
Figure 7. State Table Data
40. Exit and save the state table list.
41. Close the State Table block by selecting
.
Adding Communications
1. Select the Library
icon.
2. From the library menu select Communications.
3. On the left side of the screen select the communications block required for the protocol being
used. Select either a Modbus or ICN block.
4. Place the block near the loop compound.
5. Open the block and set the slot location. For example: If you are using the on-board channel
of serial communications and are configuring the instrument from the front port the slot
location will be “On-board”.
6. Close the Communications block by clicking on
.
7. Be sure there is a non-zero value in one of the scan groups found in the IF (Interface) block.
8. Compile the configuration and download it into the instrument.
19
Using The Totalizer Block
Building the Strategy
Display Operation
Unless other changes were made in the strategy to cause a different behavior, the instrument will
come up in a manual mode with a local set-point. The output is displayed on the bottom line.
Pressing the scroll key once causes the set-point to be displayed on the bottom line. Pressing the
scroll key a second time causes the totalized value to be displayed on the bottom line.
To enter the totalizer commands menu, press the TAG key at any time. This causes the display
to switch to the totalizer commands display. The totalized value will be on the second line. The
word “CMD” will appear next to the scroll key and the up and down arrows will be illuminated. The
lower display will state “NONE”. Pressing the up key causes “RESET” to appear on the bottom
line and “ENT” will flash next to the scroll key. Pressing the enter key (scroll key) causes the
reset operation to be enacted. If the enter key is not pressed the action will time out, reset will not
be enacted, and “NONE” will re-appear on the bottom line of the totalizer commands menu.
This same operation applies to the STOP, RUN and HOLD commands. Each of these commands
are accessed after entering the totalizer commands display and pressing the up key for each
command.
Pressing the TAG key at any time causes the PID display to return.
20
The Company’s policy is one of continuous product improvement and
the right is reserved to modify the information contained herein without
notice, or to make engineering refinements that may not be reflected in
this bulletin. Micromod Automation assumes no responsibility for errors
that may appear in this manual.
© 2004 MicroMod Automation, Inc.
Printed in USA
IB-MLAPP-TOT, Issue 2
MicroMod Automation, Inc.
75 Town Centre Drive
Rochester, NY USA 14623
Tel. 585-321 9200
Fax 585-321 9291
www.micromodautomation.com
4/2005

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