Rockwell Allen-Bradley 1745 Series User manual

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ALLEN-BRADLEY
A ROCKWELL INTERNATIONAL COMPANY
User's Manual
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IMPORTANT INFORMATION
Solid state equipment has operational characteristics differing
from thoseof electromechanical equipment. Becauseof this, and
also because of the wide variety of uses forsolid state equipment,
all personsresponsible for applying this equipment must satisfy
themselves that each intended applicationof this equipment
is
acceptable.
In no event will Allen-Bradley Companybe responsible or liable
for indirect or consequential damages resulting from the use or
application of this equipment.
The examples and diagrams in this manual are includedsolely for
illustrative purposes. Because of the many variables and
requirements associated with any particular installation, Allen-
Bradley Company cannotassume responsibility or liabilityfor
actual use based onthe examples and diagrams.
No patent liability is assumedby Allen-Bradley Company with
respect to use
of information, circuits, equipment, or software
describedin this manual.
Reproductionof the contentsof this manual, inwhole or in part,
without written permissionof the Allen-Bradley Company is
prohibited.
0 1986 Allen-Bradley Company
WARNING and CAUTION Boxes
WARNINGS indicate that people maybe hurt if
procedures arenot followed properly. CAUTIONS
indicate that machinery maybe damaged or economic
loss canoccur if procedures arenot followedproperly.
Both WARNINGS and CAUTIONS
0 Identify a possible trouble spot
0 Tell what causes the trouble
0 Give the resultof improper action
0 Tell how to avoid trouble
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Page
1-1
Chapter Objectives ................. 2-1
The Equipment
................... 2-1
TCAT
. Features .................. 2-2
Optional RemoteCommunication Kit
..... 2-4
Chapter Objectives
................ 3-1
Keyboard
...................... 3-1
ModeSelection ................... 3-2
Displays
....................... 3-2
Display InstructionSymbols
......... 3-3
Error Codes
..................... 3-4
Operatingthe TCAT ................3-5
Power-Up
....................... 3-5
Power-UpUsingAddress867
........ 3-8
Usingthe NEXTKey
.............. 3- 10
Usingthe CANCELKey
............. 3-11
Usingthe
PRESET. ACCUM. and STEP Keys 3-12
Protected
PR andAC Values .......... 3- 12
UsingtheAddressKey
.............. 3-9
Chapter Objectives
................. 4-1
Displays Review
................... 4-1
RTO and
RTF Timer Characteristics ....... 4-2
CTU andCTD Counter Characteristics .....
4-3
Monitoring aTimer Instruction ......... 4-4
Monitoring a Counter Instruction
........ 4-5
ModifyingaTimer Instruction .......... 4-6
Modifyinga Counter Instruction
........ 4-7
Using ENTER KeytoReset AC ValuetoZero
. 4-8
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Chapter
Title
Page
5
SequencerInstructions
Chapter Objectives
.................
5-1
Monitoring aSequencer Instruction
......
5-3
Modifying
a
Sequencer
Step
...........
5-4
SQO
and
SQI
Sequencer Characteristics
....
5-1
6
MonitoringInputsandOutputs
ChapterObjectives
................
6-1
Address Group Numbers
.............
6-1
TheTCAT Group NumberDisplay
........
6-3
Monitoring Group NumberAddresses
.....
6-4
i/O Monitoring Capabilitiesof theTCAT
...
6-1
7
Specifications
.................
7-1
8
Installation
Chapter Objectives
................
8-1
EquipmentCheckout
...............
8-1
EnclosureConsiderations
.............
8-2
Mounting
......................
8-3
Connectingthe Cable
...............
8-4
Mounting Template
...............
8-5
Cleaning Recommendations
...........
8-6
Appendices
A
-Using FineTime
Base
Contacts
......
A-1
B
-SpecialSequencer Instructions
......
6-1
C-Shift Register instructions
.........
C-1
D
.
EEPROM Memory Module
.........
D-1
E
-Mounting Template
.............
E-1
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The TimerKounterAccess Terminal (TCAT)is
used withthe
SLC 100 Programmable Controller.
It is designed for mounting in a panel cutout,
usually thedoor
of the controller enclosure.
With the
SLC 100 controller in the Runmode, the
TCAT provides access to programmed timer,
counter, and sequencer data. This allows
production, supervisory, and maintenancepeople
to monitor this data “on-line”.
Data can alsobe modified to accomodate
a process
or part change. A keyswitch helps prevent
unauthorized modifications.
This manual points out important features
of the
TCAT, then goes on to discuss operating detailsas
they apply to timerlcountertsequencer data, and
the monitoring
of I/O addresses.
You don’tneed a detailedknowledge
of
programming to use theTCAT.
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~~~~~~~ This chapter introducesyou to the TimerICounter
equipment it
is used with. Important features are
pointed out.
~~~~~~w@~ Access Terminal (we'll call itTCAT) and the
Interconnect ca
Components of the system are illustratedbelow.
ii;:
*I _,
KAT unit. Mounts
in a panel cutout.
-
lble (detachable).
Optional remotecommunication kit.
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TCA T - features Thefollowing features are pointed out in the
illustration on Page 2-3. Programming termi-
nology
is explained in more detail in Chapter 3.
Installation information appears in Chapter
8.
1. Keyswitch. You must use the keyto operate
the TCAT in themodify mode. This helps
prevent unauthorized programmodifications.
Keyswitch cover protects keyslot.
2. Keys and keyring. For your convenience,
errorcodes are printed on the keyringID tag.
3. Keyboard. Used to access and enter data and
addresses. Keys have positive, tactile
feedback.
4.Address display. 3-character digital display
shows addresses and other information.
5. Data display. 4-character digital display
shows PR andAC values, and other
information.
6. Instruction indicators. TME (green) indicates
anRTO or RTF timer. CNT (green) indicates
a
CTU or CTD counter. SEQ (green) indicates
an
SQOor SQI sequencer.
7. Protect (PROT)status indicator. This red
indicator is litif the monitored instruction or
sequencer step
is protected in the program.
8. Data indicators. PRESET (green) indicates a
preset (PR) value.ACCUM (green) indicates
anaccumulator (AC)value.
9. Error code table. Listed in Englishand
French.
10. Mounting screws
(4).TheTCAT mounts inan
enclosure
or panel cutout. See Chapter 8.
11. Cable socket (labeledCCl). Plug the
interconnectcable (supplied) into this socket
and the programmer socketon the SLC
processor. Refer to Chapter
8, Installation.
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2-3
Address --
display.
Protect status
indicator.
-
Instruction/
indicators.
Keyboard..
-(5) Data display.
48) Data
indicators.
.(1) Keyswitch.
i
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OptiOd
Remote
The remote communication kit (Catalog
No.
Communjcati.ion
1745-N2)
allowsyou to locate theTCAT
at
a
#it
remote distance (upto
4000
feet) from theSLC
100
controller. For distancesbeyond
100
feet,
a
Series
B
SLC
100
controller
is
required.
The kit consistsof two unassembled
DIN
connec-
tors, pointed out in the figurebelow. You must
provide the cable and
a
suitablepower supply.
The kit
is
supplied withan instruction sheet to
guide you thru the assembly and installation
procedures. Cableandpower supply
specificationsareincluded.
+-
4000
feet max.
r/
RemoteCommunication
Kit
Consists
of
these
two
DIN
connectors(unassemb1ed)
Controller
AC input
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aptea This chapterwill show you the operating features
of theTCAT in detail. Programmingterminology
will be explained. Errorcodes will be defined.
This will prepare you
to perform the keystroke
examples in Chapters
4,5, and 6.
TheTCAT keyboard is shown in Figure 3.1. Key
functions are briefly explained.You will learn
more about these functions in later chapters.
Figure 3.1
Key Explanation
ADDR Address
110
InputIOutput groups
PRESET
Enter an address ordataENTER Cancel previouskeystroke
CANCEL Accumulator (AC) value
ACCUM
Preset (PR)value
NEXT Move tonext instruction
STEP Step number(sequencers)
I I
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/bk& S@/ectiof) The keyswitch is shown at the right.
The keyslotis vertical, indicating
the MONITOR mode
is in effect.
The TCAT will operate in thismode
with the key inserted orremoved.
With thekey inserted and turned
clockwise
90" (keyslothorizontal), MONITOR
the MODIFY mode is ineffect. The
key cannot be removed in thismode.
ro
MODIFY
Displays Figure 3.2shows the digital displays andLED
indicators of the TCAT. The figure depicts
a
typical display.
Figure 3.2
I
ADDRESS
190 I
Abbreviations
PROT
- Protected SEQ - Sequencer
TME -Timer PRESET
- Preset (PR) Value
CNT
- Counter ACCUM -Accumulator (AC) Value
Explanationof displays andLED indicators
In this typicaldisplay, the TME indicator is lit, telling
us
that a timer is beingmonitored. The ADDRESS
display indicatesthe timeraddressto
be 901.
The ACCUMindicator is lit, telling us that theAC
value
is beingmonitored. The DATAdisplay shows
the
AC value to be 999.9.
The PROT indicator is lit, telling usthat the timer is
protected (the AC or PR value cannot be modified).
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Display Instruction Various abbreviations andsymbols appear in the
Symbols DATA display to indicate the timer, counter, and
sequencer instructions. These are summarized in
Figure
3.3.
Figure 3.3
rto
rtF
[tu
Ctd
oEUU
OCUIl
I EO1
I COl
9'P
5tEP
RetentiveOn-Delaytimer instruction.
RetentiveOff-Delaytimer instruction.
Up-counterinstruction.
Down-counter instruction.
Sequencer output instruction. Event-
driven. The lasttwodigits(zeros in
this case) indicatethe sequencer
groupnumber.
Sequencer output instruction.Time-
driven. The lasttwodigits(zeros in
this case) indicatethe sequencer
groupnumber.
Sequencer inputinstruction. Event-
driven. The
last two digits (07 in
this case) indicatethe sequencer
group number.
Sequencer inputinstruction.Time-
driven. The last
two digits (07 in
this case) indicatethe sequencer
group number.
This
isa prompt messageapplying to
addressgroupnumbers. It asks youto
enter
a groupnumber.
This
is a prompt messageapplyingto
sequencer instructions.
It asks youto
enter thesequencer
step number.
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Error Codes Procedural errors and other errors canoccur
when using theTCAT. Figure
3.4 explains the
errorcodes which appear in the displaywhen an
erroroccurs.
Errorcode explanations
also appear on thekey
ID tag andon theback of the TCAT.
Figure 3.
4
mode, orthe Auto/Manual
switch
is inManual, ora
processorerror has occurred.
@
E 5 L c 2
Communicationerrorwiththe
processor.
0
E rr k c k Errordiscovered duringthe
TCAT power-up self test. 0
Invalidaddress(notwithin the
901 to 932 range). @
E 1 d I
E fl d 2
Address not foundin the user
program.
0
This code appearswhen you
attempt tomodify data while in
the monitor mode.
@
E n d
E r r 5 t E p Invalidsequencerstep. @
E 9 r p
Invalid I/O groupnumber. @
E p t
This error code appearswhen
you attemptto modifydata
which
is protected. @
@ Remediesfor theseerrorsappear in Chapter 8.
@ These errorsindicatethatyou enteredwrongdata
or you attemptedan invalid procedure. Remedy:
PresstheCancel key,which returns thedisplay to
the point
it was at before theerrorwasmade.
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Opera
tin9 the The following TCAT operating detailswill be
TCA T easier to learnif youhave access to aTCAT
demonstrator unitconnected
to anSLC 100
demonstrator unit.
We recommend that you read thefollowing
paragraphs, thenverify the proceduresby
practicing themon the demonstrator.
Power-Up Case 1. The SLC 100 processor is in theRun
mode, with theMAN/AUTOswitch setatAUTO.
This
is the normal situation.
When you power-up the system, theTCAT will go
thru
a seriesof diagnostic tests and thenshow
the lowest timer/counter/sequencer address
number inyour program, usually901. The
example below describes power-up. Inthis case,
we are using905 asthe lowest address in the
program.
Example: Suppose the lowest timer/counter/
sequencer address in your program
is 905,an
unprotected RTO timer, and theonly other
address you are using
is 930, an SQO sequencer.
Thefollowing will occur when you power-up:
The TCAT will go thru itsdiagnostic tests, then
automatically scan addresses901-932. The
display will show 901,902,903,904:
then stopat905, showingyou the instruction
symbol:
F] (TME indicator lit)
The TCATkeyboard is inoperative while the
TCAT is scanningto an address number you are
using in your program.
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Power-Up To move to yournext instruction,you simply
(continued) press theNEXT key. If you do this while the
TCAT
is still scanning, the displaywill again
show theaddresses.
You might happen topick up
the scan
at address 928; the displaywould show
928,929:
then stop at930:
(.EOOi (SEQ indicator lit)
Any timeyou press theNEXT key after the scan
is completed, the TCAT shows (in sequence) only
those instructions
you are using in the program.
In thiscase, pressingNEXT repeatedlywould
alternatelyshow instructions 905 and930.
Case 2. The SLC 100 processor is in theRun
mode, with theMAN/AUTO switch setatMAN.
When
you power-up the system, theTCAT will go
thru
its diagnostic tests and thendisplay:
--
IErrI I~LC II
To clear this error, turn theprocessor
AUTO/MAN switch toAUTO. The TCAT will
then scan addresses
as described in Case 1.
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Power-Up Case 3. The SLC 100 processoris insome other
(continued)
mode than Run.
When you power-up the system, theTCAT will go
thru its diagnostic tests and thendisplay:
To clear this error,you must use thePocket
Programmer to place theprocessor in the Run
mode. TheTCAT will then operateasdescribed
in Case
1.
Case 4. Processor does not have a user program
in memory, or the programdoes not containany
timer, counter, or sequencer instructions.
When you power-up the system, theTCAT will go
thru its diagnostic tests, then scan addresses901-
932. Thefollowingerror code will then appear:
/Rdr21
To correct this error, entera program havinga
timer/counter/sequencer instruction,then place
the processor in the Runmode.
Special Note - Fine Time Base Instructions:
If your program contains fine time base instruc-
tions (addresses
869-8751, seeAppendixA.
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On power-up, the TCAT will go thru its
diagnostics checks, then
immediately display the
instruction in the rung containing address
867
(instead of scanning addresses until it reaches
the lowest instruction used in the program).
Using the exampleabove, the displayshows:
mu
0 (CNT, ACCUM indicators lit)
Note that the TCAT hasgone directly to the AC
value of the instruction.We’ve designed address
867 towork this way for your convenience.
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Using the
Address Key
This is a dual function key. Press itonce when
you want to enter an address. Press
it twice when
you want
to enter anI/O group number.We’ll
explain the
YO function in Chapter 6.
Moving to anotheraddress: Suppose the
TCATdisplay shows
(CNT indicator lit)
and you want to move to address 915, anRTO
timer. Press ADDR
(once). The displaywill
show:
The displaywill be flashing, promptingyou for
the lasttwo numbers of the address. Press
numeric keys
1,5, then press ENTER. The
display will show:
Eli
2 .!? (TME,ACCUM indicators lit)
The display is showing you the AC value of the
instruction. This occurs automatically,
whenever you use theADDR key
to move to
another address.
Mistakes: If youhappen to press theADDR key
twice,
or press thewrong numeric key, or enter
an invalid address (errorcode appears), press the
CANCEL key and try again.
Special Note - Fine Time Base Instructions:
If your program contains fine time base instruc-
tions (addresses
869-8751, see Appendix A.
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