1745-850, Timer-Counter Access Terminal User`s Manual
Contents
1. With time driven sequencers each step functions similar to timer instructions involving an AC value and a programmed PR value In the same way the event driven sequencer functions similar to counter instructions You will find further operating details and programming information in the User s Manual for the SLC 100 Programmable Controller Here we are concerned only with monitoring the PR and AC values of the individual steps and modifying PR values Chapter Sequencer Instructions SQO and SQI Figure 5 1 shows a typical ladder diagram of a Sequencer sequencer output This is a 5 step time driven Characteristics sequencer controlling 6 external output continued addresses For our purposes we needn t consider the step completion bit rung 2 the cycle completion bit rung 3 or the Reset instruction A brief table of programmed data is included in the figure Programmed data is coded In this case I O group number 0 indicates that addresses 011 thru 018 are involved The mask data indicates that addresses 017 and 018 are excluded from control The step data indicates which outputs are ON and which are OFF during each step PR values are programmed directly Note that the PR values of steps 0 2 and 4 are protected meaning that we cannot modify them See Figure 5 3 on Page 5 4 for a typical sequencer input ladder diagram Figure 5 1 Sequencer PROGRAMMED 867 001 Instruction 904 DATA Rung 1 sao Instruction2. Instead it shows you the individual bits of a BCD counter the count corresponds to the sequencer step number 773 780 26 781 788 27 789 796 28 797 804 29 805 812 30 813 820 821 828 829 836 837 844 34 845 852 35 853 860 36 861 868 370 869 876 O These are fine time base addresses and the auto manual switch bit Chapter RSS monitoring da e inputs and Outputs The TCAT Group Pressing the dual function ADDR I O key twice Number Display will prompt you for a group number After you enter a number and press ENTER the TCAT will show you the group number and a representation of the status of the corresponding 8 addresses A typical TCAT display is shown in Figure 6 2 This display shows address group number 0 Figure 6 1 indicates that the symbols in the data window apply to addresses 011 thru 018 In this group addresses 011 012 013 014 015 and 016 apply to external outputs of the SLC 100 processor unit Addresses 017 and 018 are internal addresses Addresses appear in numerical order with the lowest address on the right Ifa symbol is low 011 013 014 015 and 018 the instruction at that address is OFF or the address is not used Ifa symbol is high the instruction is ON Figure 6 2 ADDRESS DATA ON position OFF position Group number The lowest address A 011 in this case is 8 lines represent addresses 011 always on the right 012 013 014 015 016 01
3. SQI Address 903 012 Event Driven VO Group 7 Mask Data 0 3 Step PR Data Value 013 Reset Instruction 3 903 RACO Protected Chapter Sequencer Instructions 5 5 Modifying a The following keystroke example assumes that Sequencer Step the program contains the sequencer shown in continued Figure 5 3 We will modify the PR value of step 2 then attempt to modify the PR value of step 0 Figure 5 4 Keystroke Example Modify the Sequencer Input instruction at address 903 See Figure 5 3 for programmed data Address 903 is the lowest timer counter sequencer address programmed Mode MODIFY These Display will show Explanation LEDs will be lit Address Data Li 903 E01 power 903 5 PRESET SEQ PRESET i PROT O 5 STEP SEQ SEEP The display is flashing prompting you E for a step number SEQ g J Number 2 is displayed flashing Step 2 PRESET PR value is 3 If CANCEL key is pressed monitoring of step 0 PR value resumes This allows you to check the PR value of ENTER SEQ d PRESET 2 5 ENTER STEP 0 ENTER Address 903 is displayed The 1st digit of the instruction symbol indicates SQI the 2nd indicates event driven The 3rd and 4th indicate I O group number 7 To access a step number the AC or PR value must first be displayed We ve called up the PR value protected Current step number 0 is displayed Press STEP again to sel
4. SQO Address 904 Le Step Completion Time Driven 904 Bit Address 701 VO Group 0 Rung 2 Mask Data 2 F Pa Cycle Completion Step PR 954 Bit Address 702 Data Value Rung 3 Reset 002 Instruction 3 904 Rung 4 HA rst RAC 0 Protected Chapter Sequencer Instructions 5 3 Monitoring a The following keystroke example assumes that Sequencer the program contains the sequencer shown in Instruction Figure 5 1 We will monitor the AC value identify the step number monitor the PR value then identify the instruction Figure 5 2 Keystroke Example Monitor the 5 step Sequencer Output instruction at address 904 See en TO 5 1 for programmed data Mode MONITORor MODIFY MONITOR or MODIFY Koly 90H power gt 904 aCOO Display During Sequencer Operation If the sequencer is operating during this keystroke example the displayed AC value will be incrementing and the displayed step number and PR value will advance as the sequencer moves from step to step These Display will show Explanation LEDs will be lit Address Data Address 867 is programmed so that the TCAT goes directly to timer counter sequencer address 904 and auto matically displays the AC value The SEQ LED indicates address 904 is a sequencer The ACCUM LED indicates the AC value of the current step is being monitored The PROT LED indicates the PR value of this step is protected The addres
5. AC value is being monitored the PROT LED indicates the AC and PR values are protected Apply power PRESET TME PRESET PROT The TCAT is monitoring the PR value gt You can go back to the AC value if you choose Just pressthe ACCUM key g 14 300 0 The TCAT is monitoring the AC value The value will be incrementing if the timer rung is TRUE timer operating The TCAT is identifying the instruction as a retentive timer On Delay RTO 9 14 O TME Chapter gy Timer and Counter E Instructions 4 5 Monitoring a The following keystroke example is quite similar Counter tothe timer keystroke example Figure 4 4 In Instruction this case we are assuming that address 914 applies to a CTU instruction Its PR value is 3000 and it is protected meaning that we can not modify the PR or AC value We will enter the address which will be identified as a counter CNT We will monitor the AC and PR values and then identify the instruction specifically as a CTU counter Figure 4 5 Keystroke Example Monitor CTU counter at address 914 Preset is 3000 nn I Mode MONITOROrMODIFY MONITOR or MODIFY These Display will show Explanation LEDs will be lit Address Data played unless 867 is used Address RN 901 Ckd power 901 applies to a down counter Ctd ADDR The display is flashing prompting you for an address Address 914 is ent
6. be damaged or economic loss can occur if procedures are not followed properly Both WARNINGS and CAUTIONS e Identify a possible trouble spot e Tell what causes the trouble e Give the result of improper action e Tell how to avoid trouble TCAT User s Manual Title Page Introduction 1 1 Equipment Overview Chapter Objectives 2 1 The Equipment o o o o 2 1 TGAT Features crasas wenn 2 2 Optional Remote Communication Kit 2 4 Basics of Operation Chapter Objectives 3 1 Keyboard 3 1 Mode Selection 2 2222er 3 2 Displays ii a is e NG 3 2 Display Instruction Symbols 3 3 Error Codes 3 4 Operating the TCAT 3 5 Power Up LL 3 5 Power Up Using Address 867 3 8 Using the Address Key 3 9 Using the NEXT Key 3 10 Using the CANCEL Key 3 11 Using the PRESET ACCUM and STEP Keys 3 12 Protected PR and AC Values 3 12 Timer and Counter Instructions Chapter Objectives 4 1 Displays Review 4 1 RTO and RTF Timer Characteristics 4 2 CTU and CTD Counter Characteristics 4 3 Monitoring a Timer Instruction 4 4 Monitoring a Counter Instruction 4 5 Modifying a Timer Instruction 4 6 Modifying a Counter Instruction 4 7 Using ENTER Key to Reset AC Value to Zero 4 8 TCAT User s Manual Conten
7. in enclosure door or panel 0 006 inch peak to peak displacement 1 0g peak max acceleration 1 Hr axis Certification Meets NEMA Type 12 and 13 and IEC 529 IP65 enclosure applications UL listed CSA certified Overall Dimensions 5 50 139 7 mm wide x 6 0 152 4 mm high x 2 89 73 41mm deep Weight 13 ounces Chapter Installation Chapter This chapter explains how to check out the TCAT Objectives prior to installation and how to install the TCAT in an enclosure cutout Equipment Before you install the TCAT check it for external Checkout damage which might have occurred during shipment Then power it up to check for possible internal damage To power up the TCAT you will need access to an energized SLC 100 processor Power up procedure 1 Energize the processor Place the processor in the Run mode with the pocket programmer Turn the Auto Manual switch to Auto Disconnect power to the processor Unplug the pocket programmer Plug one end of the interconnect cable supplied with the TCAT in the socket on the top of the TCAT and the other end in the programmer socket on the processor Cable connectors are keyed to guard against improper insertion Make sure the spring latch is engaged to secure the connector in the socket Energize the processor The TCAT should operate as described in Chapter 3 on Pages 3 5 to 3 8 Ifthe TCAT display shows any of the following 3 error m
8. people to monitor this data on line Data can also be 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 details as they apply to timer counter sequencer data and the monitoring of I O addresses You don t need a detailed knowledge of programming to use the TCAT Chapter Equipment i Overview Chapter This chapter introduces you to the Timer Counter Objectives Access Terminal we ll call it TCAT and the equipment it is used with Important features are pointed out The Equipment Components of the system are illustrated below TCAT unit Mounts in a panel cutout Interconnect cable detachable Keys and keyring with ID tag SLC 100 processor Optional remote communication kit Chapter 2 2 Equipment Overview TCAT Features The following 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 key to operate the TCAT in the modify mode This helps prevent unauthorized program modifications Keyswitch cover protects keyslot Keys and keyring For your convenience error codes are printed on the keyring ID tag i Keyboard Used to access and enter data and addresses Keys have positi
9. performs both the NEXT and ENTER functions In the paragraph on Power Up Page 3 6 we used it to move to the next address in the user program In the paragraph on Using the Address Key Page 3 9 we used it to enter an address In the following paragraph we ll show you how to use the NEXT key to move thru the timer counter sequencer addresses in the user program In Chapter 6 on monitoring inputs and outputs we will show you how to use the NEXT key to move thru address group numbers Moving to the next address Suppose your program has a timer a counter and a sequencer The addresses are 905 909 and 924 respectively The display is showing the preset value of the timer TME PRESET indicators lit Press the NEXT key The display will show CNT PRESET indicators lit The display has moved to the counter instruction and it is showing the preset value Press NEXT again The display will show the sequencer z SEQ PRESET indicators lit The display is showing the preset value of the current step Chapter Basics of Operation 3 11 Using the Two things are important to remember here NEXT Key e Pressing the NEXT key shows you the continued addresses in numerical order even if they do not appear in numerical order in the user program e When moving to the next address the display shows the same type of information that was shown previously In this case it is the preset value It could also be the AC
10. shift register instruction can be modified with the TCAT In the figure above the shift register at address 18 is controlled by sequencer 901 The preset value of sequencer 901 controls the shift clock rate This preset can be modified with the TCAT See the keystroke example for modifying sequencer steps in Chapter 5 on Page 5 4 for details Appendix D i EEPROM Memory Module Description The EEPROM module is an optional device which plugs into the SLC 100 processor unit With the EEPROM you can Save the contents of the RAM memory for storage purposes e Load the contents of the EEPROM memory into the processor RAM If you have an EEPROM module installed and you have modified data with the TCAT and you wish the modified data to be saved in the EEPROM you must do so before disconnecting power Do this by exchanging the TCAT with the pocket programmer and following the procedure described in Chapter 16 of the SLC 100 User s Manual Publication 1745 800 After saving the contents of the RAM you can remove power Appendix 2 Mounting Fi Template Description We ve provided the following template 3 copies for your convenience in mounting the TCAT Before you use the template read the installation recommendations on Page 8 3 Appendix E Mounting ma Template Before you use this template read the installation recommendations on Page 8 3 4 125 104 8 mm 0 152 3 86mm dia 4
11. value is 999 9 PR and AC values are not protected Mode MODIFY These will show Explanation LEDs will be lit Address Data 1 Data PRESET TME 90 I 100 07 You have just pressed the PRESET key to PRESET display the PR value of timer 901 To change the PR value press PRESET again PRESET TME The four underlines are flashing PRESET prompting you to enter a new PR value 3 0 0 0 TME 90 300 0 The Pr value is changed to 300 0 ENTER PRESET ACCUM TME g0 399 9j The current AC value of 999 9 is ACCUM displayed We assume that the AC value is not incrementing timer rung FALSE To enter a new AC value press ACCUM a second time TME ACCUM 2 2 2 2 TME The AC value is changed to 222 2 The four underlines are flashing prompting you to enter a new AC value Chapter Me Timer and Counter 3 Instructions Modifying a Figure 4 7 will show you how to modify counter Counter data similar to modifying timer data We Instruction assume that the program contains a CTU instruction at address 901 Its PR value is 1000 and its AC value is 9999 The PRand AC values are not protected The keystroke example begins with the TCAT display showing the PR value you learned how to do this in previous keystroke examples We will change the PR value to 3000 then go on to the AC value and change that to 2222 Note that the TCAT must be in the MODIFY mode Figure 4 7 Keystroke Example Modif
12. value or the instruction symbol Special Note Fine Time Base Instructions If your program contains fine time base instruc tions addresses 869 875 see Appendix A Using the CANCEL Key The CANCEL key can be used for three things e Clear an error code Press CANCEL to clear an error code Discussed on Page 3 4 e Show instruction symbol When the display is showing the PR or AC value press CANCEL to display the instruction symbol For example if the PR value of timer 905 is shown TME PRESET indicators lit pressing CANCEL will bring up the instruction symbol e Cancel data When the display is prompting for numeric data address I O group step number new AC or PR value press CANCEL to cancel the data entry Discussed on Page 3 9 Chapter Basics of 3 12 Operation Using the PRESET ACCUM and STEP Keys PRESET ACCUM STEP The function ofthese keys is described in the keystroke examples of Chapters 4 and 5 Protected PR The PR and AC values of a timer or counter can and AC Values be protected in the user program This is also true of the PR value of a sequencer step These protected values cannot be changed with the TCAT When an instruction with protected PR and AC values is displayed by the TCAT the PROT LED will be lit to indicate the protected status Chapter Timer and Counter E Instructions Chapter In this chapter you will be using the PRESET Objectives and AC
13. 7 018 This display tells you that devices connected to output terminals 12 and 16 of the processor unit are energized or ON If you have output devices connected to terminals 11 13 14 and 15 they are OFF The display also tells you that an output energize instruction at internal address 017 is ON If you are using an output energize instruction at address 018 itis OFF Chapter MW Monitoring Inputs and Outputs Monitoring In the following keystroke example we will Group Number access a group number use the ADDR I O key Addresses to access another group number use the NEXT key to access successive group numbers then return to the original instruction Figure 6 3 Keystroke Example Monitor address group numbers 0 15 and 17 Return to the original display Mode MONITOR or MODIFY These eg willshow Explanation LEDs will be lit Address Data ress Data NE 30 Ed We are assuming that the program pply contains a down counter at address 901 power and address 867 is not used VO VO None ee The display is promting you for a group number 0 Group 0 is selected Addresses 011 012 ENTER 013 014 015 016 017 018 are displayed 012 and 014 are ON 1 0 O 15 titan Group 15 is selected Addresses 309 1 5 ENTER 310 409 410 509 510 609 610 are displayed 409 and 610 are ON NEXT None I dini NEXT VO CNT 90 Ckd CANCEL Pressing the NEXT key twice ha
14. AB ALLEN BRADLEY A ROCKWELL INTERNATIONAL COMPANY User s Manual Bulletin 1745 Timer Counter Access Terminal Catalog No 1745 TCAT Price 25 00 IMPORTANT INFORMATION Solid state equipment has operational characteristics differing from those of electromechanical equipment Because of this and also because of the wide variety of uses for solid state equipment all persons responsible for applying this equipment must satisfy themselves that each intended application of this equipment is acceptable In no event will Allen Bradley Company be 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 included solely for illustrative purposes Because of the many variables and requirements associated with any particular installation Allen Bradley Company cannot assume responsibility or liability for actual use based on the examples and diagrams No patent liability is assumed by Allen Bradley Company with respect to use of information circuits equipment or software described in this manual Reproduction of the contents of this manual in whole or in part without written permission of the Allen Bradley Company is prohibited O 1986 Allen Bradley Company WARNING and CAUTION Boxes WARNINGS indicate that people may be hurt if procedures are not followed properly CAUTIONS indicate that machinery may
15. B 3 Step Number When programming reversing sequencers SQI Display monitoring an SQO step and the sequencer jump operation special sequencer groups 38 through 69 must be used Special sequencer groups 38 through 69 are binary counters that display the current step number for the operation The step number is displayed in binary notation with the least significant digit in the far right position Figure B 2 below illustrates this Figure B 2 ADDRESS DATA ON position H OFF position Group number S Most Least significant significant 262524232221 value 20 1 value 27 The display tells you that there is a ONE in the second and third positions in binary notation this represents a six 21 22 2 4 6 The current step number for the sequencer operation is step number 6 Appendix o se a Description Figure C 1 Rung 1 Shift Register Instructions With a shift register instruction status data enters an 8 bit register and is automatically shifted through the register from one bit address to the next ona time or event driven basis A sequencer instruction is used to control the shift rate as shown in the figure below 901 Time driven 5Q0 Group no Any Mask data 0 Step O data Any Step 0 preset Shift Rung 2 HA ZCL clock rate Rung 3 HN sr Rung 4 ZCL Time driven shift right register The TCAT can be used to modify the preset value of step 0 which is the shift clock rate The shift clock rate of a
16. CUM keys to monitor and modify the PR and AC values of a timer and counter instruction Figure 4 1 depicts a typical display This is a repeat of Figure 3 2 included here to refresh your memory Displays Review Figure 4 1 ADDRESS DATA 9999 PROT TME CNT SEQ PRESET ES ojo OG accum Abbreviations PROT Protected SEQ Sequencer TME Timer PRESET Preset PR Value CNT Counter ACCUM Accumulator AC Value Explanation of displays and LED indicators In this typical display the TME indicator is lit telling us that a timer is being monitored The ADDRESS display indicates the timer address to be 901 The ACCUM indicator is lit telling us that the AC value is being monitored The DATA display shows the AC value to be 999 9 The PROT indicator is lit telling us that the timer is protected the AC or PR value cannot be modified Chapter RTO and RTF Timer Characteristics Timer and Counter Instructions Timer instructions include the Retentive Timer On Delay RTO and the Retentive Timer Off Delay RTF Both require the use ofthe Reset instruction RST The TCAT will access RTO and RTF timers but not the Reset instruction Timer instructions are represented by the following symbols 901 901 H RTO E A RTE Fi eek 988 PR 400 0 PR 400 0 Figure 4 2 shows a typical timer ladder diagram Rung 1 contains the RTO timer instruction Its address is 901 and its PR value is 300 0 When this run
17. Hydrocarbons Toluene Acetone Ammonia Appendix M Using Fine Time Base Instructions Description Fine Time Base instructions allow you to program timers with greater resolution than the 0 1 second resolution provided by standard timers 1 O group 37 includes fine time base bit addresses 869 through 875 address 869 is a scan counter addresses 874 and 875 count in intervals of 0 5 and 1 0 seconds respectively The measured scan time of your SLC 100 program determines which of the remaining Fine Time Base instructions you can use Caution The scan time of the SLC 100 is slightly increased during the following operations of the TCAT During the TCAT power up scan discussed on Page 3 5 Each time the NEXT key is pushed to select a new address to monitor When the Address key and the numeric keys are used to select a new address to monitor An increase in scan time may cause Fine Time Base instructions to operate inaccurately Appendix Description to create Cascaded sequencers Reversing sequencers Special Sequencer Instruction Techniques The SLC 100 sequencer instructions can be used SQI monitoring an SQO step e SQI driving an SQO 0 Sequencer jump operation Procedures for monitoring modifying sequencer instructions are explained in Chapter 5 A cascaded sequencer example is shown below Cascaded Sequencer Instruction Sequencer instructions can be cascaded to c
18. ODIFY the MONITOR mode is in effect The TCAT will operate in this mode with the key inserted or removed With the key inserted and turned clockwise 90 keyslot horizontal MONITOR the MODIFY mode is in effect The key cannot be removed in this mode Displays Figure 3 2 shows the digital displays and LED indicators ofthe TCAT The figure depicts a typical display Figure 3 2 ADDRESS DATA 001 asa PROT TME CNT SEQ E PRESET ojo oso accum Abbreviations PROT Protected SEQ Sequencer TME Timer PRESET Preset PR Value CNT Counter ACCUM Accumulator AC Value Explanation of displays and LED indicators In this typical display the TME indicator is lit telling us that a timer is being monitored The ADDRESS display indicates the timer address to be 901 The ACCUM indicator is lit telling us that the AC value is being monitored The DATA display shows the AC value to be 999 9 The PROT indicator is lit telling us that the timer is protected the AC or PR value cannot be modified Chapter WEM Basics of Operation Display Instruction Various abbreviations and symbols appear in the Symbols DATA display to indicate the timer counter and sequencer instructions These are summarized in Figure 3 3 Figure 3 3 ELE Retentive On Delay timer instruction Retentive Off Delay timer instruction be Sequencer output instruction Event driven The last two digits zeros in oC00 this case in
19. dicate the sequencer Sequencer output instruction Time driven The last two digits zeros in this case indicate the sequencer group number group number Sequencer input instruction Event driven The last two digits 07 in this case indicate the sequencer group number CO1 Sequencer input instruction Time driven The last two digits 07 in this case indicate the sequencer group number This is a prompt message applying to address group numbers It asks you to enter a group number SR SEE A This is a prompt message applying to sequencer instructions It asks you to enter the sequencer step number 3 4 Chapter Error Codes Figure 3 4 Basics of Operation Procedural errors and other errors can occur when using the TCAT Figure 3 4 explains the error codes which appear in the display when an error occurs Error code explanations also appear on the key ID tag and on the back of the TCAT Processor is not in the Run mode or the Auto Manual switch is in Manual or a processor error has occurred a Err SLC Communication error with the processor gt Invalid address ne within the Err Adr Address we found in the user program Err Mod This code appears when you attempt to modify T while in the monitor mode GLEP Invalid sequencer step O Invalid O group number Err Prot This error code appears when you attempt to modify data which is protect
20. ect another step any step without making a change Underlines are flashing prompting for new PR value If you press ENTER a 2nd time the PR value will default to zero The PR value is changed to 25 The TCAT resumes monitoring the PR value of the current step Now we ll attempt to modify the PR value of step 0 SEQ The PROT LED indicates the PR value is PRESET protected The error code tells us we PROT cannot change a protected PR value Press CANCEL to remove the error code Chapter pe Chapter Objectives 10 Monitoring Capabilities of the TCAT Address Group Numbers i Monitoring Inputs and Outputs In this chapter you will be monitoring the status of external inputs and external outputs You will also monitor the status of instructions having internal addresses In most applications you will find it useful to monitor the on off status of input devices limit switches selector switches etc and output devices motor starters relays solenoids You may also want to monitor the status of instructions having internal addresses For example the status and overflow bits of counters could be used with output energize instructions having internal addresses You will be able to observe how the counter affects this internal logic of your program zas DRESS An address group number represents eight addresses In most cases these addresses are consecut
21. ed Remedies for these errors appear in Chapter 8 Error discovered during the TCAT power up self test O These errors indicate that you entered wrong data or you attempted an invalid procedure Remedy Press the Cancel key which returns the display to the point it was at before the error was made Chapter Operating the TCAT Power Up Basics of Operation 3 5 The following TCAT operating details will be easier to learn if you have access to aTCAT demonstrator unit connected to an SLC 100 demonstrator unit We recommend that you read the following paragraphs then verify the procedures by practicing them on the demonstrator Case 1 The SLC 100 processor is in the Run mode with the MAN AUTO switch set at AUTO This is the normal situation When you power up the system the TCAT will go thru a series of diagnostic tests and then show the lowest timer counter sequencer address number in your program usually 901 The example below describes power up In this case we are using 905 as the lowest address in the program Example Suppose the lowest timer counter sequencer address in your program is 905 an unprotected RTO timer and the only other address you are using is 930 an SQO sequencer The following will occur when you power up The TCAT will go thru its diagnostic tests then automatically scan addresses 901 932 The display will show 901 902 903 904 10 0 a m0 the
22. er For distances beyond 100 feet a Series B SLC 100 controller is required The kit consists of two unassembled DIN connec tors pointed out in the figure below You must provide the cable and a suitable power supply The kit is supplied with an instruction sheet to guide you thru the assembly and installation procedures Cable and power supply specifications are included AS 4000 feet max E Remote Communication Kit 4 Consists of these two DIN connectors unassembled SLC 100 Controller AC input Chapter E Basics of E Operation ES Chapter This chapter will show you the operating features Objectives ofthe TCATin detail Programming terminology will be explained Error codes will be defined This will prepare you to perform the keystroke examples in Chapters 4 5 and 6 Keyboard The TCAT keyboard is shown in Figure 3 1 Key functions are briefly explained You will learn more about these functions in later chapters va 7 a 415 6 I 12 13 Je ENTER l CANCEL DA STEP NEXT key Explanation ADDR Address VO Input Output groups PRESET Preset PR value ACCUM Accumulator AC value CANCEL Cancel previous keystroke ENTER Enter an address or data NEXT Move to next instruction STEP Step number sequencers Figure 3 1 Chapter Basics of 3 2 Operation Mode Selection The keyswitch is shown at the right The keyslot is vertical indicating M
23. ered The TCAT automatically monitorsthe AC value Value increases for each FALSE to TRUE transition of the counter rung The CNT LED indicates that address 914 applies to a counter the ACCUM LED indicates the AC value is being monitored the PROT LED indicates the AC and PR values are protected When you apply power the lowest timer counter sequencer address is dis PRESET CNT PRESET PROT The TCAT is monitoring the PR value You can go back to the AC value if you choose Just press the ACCUM key 914 3000 The TCAT is monitoring the AC value Value increases for each FALSE to TRUE transition of the counter rung ENT gue Ck The TCAT is identifying the instruction as PROT u an up counter CTU Chapter B R Timer and Counter 4 6 a Instructions Modifying a Figure 4 6 will show you how to modify timer Timer data We assume that the program contains an Instruction RTO instruction at address 901 Its PR value is 100 0 and its AC value is 999 9 The PR and AC values are not protected The keystroke example begins with the TCAT display showing the PR value you learned how to do this in the previous keystroke examples We will change the PR value to 300 0 then go on to the AC value and change that to 222 2 Note that the TCAT must be in the MODIFY mode to make these changes Figure 4 6 Keystroke Example Modify RTO timer at address 901 PR value is 100 0 AC
24. essages follow the procedures listed in Figure 8 1 Err SLC Err SLCA Err ECAE Chapter installation Equipment Figure 8 1 lists error codes which indicate Checkout possible internal malfunctions Explanations of continued Other error codes appear on Page 3 4 Figure 8 1 ADDRESS DATA Display Display lt a ee E Es Enclosure The TCAT is designed for mounting in a cutout in Considerations the door of the controller enclosure Follow all recommendations on enclosures listed in the SLC 100 User s Manual The enclosure protects the equipment from atmospheric contamination Standards established by the National Electrical Man ufacturer s Association NEMA define enclosure types based on the degree of protection an enclosure will provide Select a NEMA type 12 or 13 enclosure that is suitable for your application SLC 100 processor hardware problem As noted on Page 3 4 this error code also appears if the processor is not in the Run mode or the Auto Manual switch is in Manual Refer to the remedial advice in the SLC 100 User s Manual Chapter 21 Fig 21 2 2 tf the error code still exists contact your local A B representative for repair or replacement Check the interconnect cable to make certain it is securely connected at both ends Communication problem between TCAT and processor 2 Recycle power to the processor If error code st
25. g is TRUE the AC value is incrementing When the AC value equals the PR value rung 2 goes TRUE producing an output Rung 3 is the reset rung When it goes TRUE the AC value of the timer is reset to zero With the TCAT you will be able to locate address 901 identify the instruction as an RTO timer Figure 4 2 and monitor and modify its PR and AC values You will also be able to observe the AC value incrementing when the timer rung is TRUE 001 901 Rung 1 __ _ ____ k RTO PR 300 0 901 011 Rung 2 eL 002 901 Rung 3 hf rst Chapter MB Timer and Counter S Instructions CTUand CTD Counter instructions include the Up Counter Counter CTU and the Down Counter CTD Both Characteristics require the use of the Reset instruction RST The TCAT will access CTU and CTD counters but not the Reset instruction Counter instructions are represented by the following symbols 901 901 Address 901 932 ctu co Range 1 9999 counts PR 1000 PR 1000 Figure 4 3 shows a typical counter ladder diagram Rung 1 contains the CTU counter instruction Its address is 910 and its PR value is 888 When this rung makes a FALSE to TRUE transition the AC value increases by one When the AC value equals the PR value rung 2 goes TRUE producing an output Rung 3 is the reset rung When it goes TRUE the AC value of the counter is reset to ten With the TCAT you will be able to locate address 910 identify the
26. he rung containing address 867 instead of scanning addresses until it reaches the lowest instruction used in the program Using the example above the display shows Note that the TCAT has gone directly to the AC value of the instruction We ve designed address 867 to work this way for your convenience Chapter Basics of Operation 3 9 Using the Address Key This is a dual function key Press it once when you want to enter an address Press it twice when you want to enter an I O group number We ll explain the I O function in Chapter 6 Moving to another address Suppose the TCAT display shows CNT indicator lit and you want to move to address 915 an RTO timer Press ADDR once The display will show BE The display will be flashing prompting you for the last two numbers of the address Press numeric keys 1 5 then press ENTER The display will show TME ACCUM indicators lit The display is showing you the AC value of the instruction This occurs automatically whenever you use the ADDR key to move to another address Mistakes If you happen to press the ADDR key twice or press the wrong numeric key or enter an invalid address error code appears press the CANCEL key and try again Special Note Fine Time Base Instructions If your program contains fine time base instruc tions addresses 869 875 see Appendix A Chapter Using the NEXT Key Basics of Operation ENTER yA This key
27. holes 3 812 96 8 mm 5 0 4 5 127 0 mm 114 3 mm Appendix oe Mounting A i Template Before you use this template read the installation recommendations on Page 8 3 4 125 104 8 mm 0 152 3 86mm dia 4 holes 3 812 96 8 mm 4 5 5 0 114 3 mm 127 0 mm Appendix Mounting Template Before you use this template read the installation recommendations on Page 8 3 4 125 104 8 mm 0 152 3 86mm dia 4 holes 3 812 96 8 mm 4 5 5 0 114 3 mm 127 0 mm Xd ALLEN BRADLEY WD 939 4 ROCKWELL INTERNATIONAL COMPANY Industrial Control Division Milwaukee Wisconsin 53204 Publication 1745 850 April 1986 40065 311 01 A
28. ill appears contact your local A B representative for repair or replacement TCAT hardware problem Detected during self test Contact your local A B representative for repair or replacement Chapter Installation 8 3 Mounting Figure 8 2 shows the cutout dimensions for the TCAT We have also included a mounting template Appendix E for your convenience In locating the cutout on the enclosure door Provide adequate clearance behind the enclosure door and above and below the TCAT housing See note on ventilation below e Position the TCAT so that stress will not be exerted on the interconnect cable when the door is opened e Before drilling make certain that all power to the equipment within the enclosure is disconnected Make certain the drill bit will not make contact with equipment and cause damage Important note on ventilation To keep the TCAT temperature within the specified range cooling air in the enclosure must be between 0 60 C Allow 3 inches clearance above and 6 inches clearance below the TCAT housing All four studs on the TCAT should be grounded to the enclosure door To accomplish this scrape away the paint at the points where each KEPS nut supplied makes contact with the inside of the enclosure Important The torque require ment on the KEPS nut is 6 in lbs Tighten so that the TCAT bezel just contacts the surface of the enclosure Caution The TCAT has ventilatio
29. instruction as a CTU counter and monitor and modify its PR and AC values You will also be able to observe the AC value increment with each FALSE to TRUE transition of rung 1 Figure 4 3 001 910 Rung 1 H ctu PR 888 910 016 Rung 2 A 002 910 Rung 3 l st Chapter Timer and Counter 4 4 Instructions Monitoring a In the following keystroke example we are Timer assuming that the program contains an RTO Instruction instruction at address 914 Its PR value is 300 0 and it is protected meaning that we can not modify the PR or AC value We will enter the address which will be identified as a timer TME We will monitor the AC and PR values and then identify the instruction specifically as an RTO Retentive On Delay timer Figure 4 4 Keystroke Example Monitor RTO timer at address 914 Presetis 300 0 protected Mode MONITOR or MODIFY Display will show Explanation Address Data CNT SOI Ed These LEDs will be lit When you apply power the lowest timer counter sequencer address is dis played unless 867 is used Address 901 applies to a down counter Ctd ADDR The display is flashing prompting you for an address 1 4 g 4 1 Address914is entered The TCAT bd automatically monitors the AC value The value will be incrementing if the timer rung is TRUE timer operating The TME LED indicates that address 914 applies to a timer the ACCUM LED indicates the
30. ive 001 thru 008 011 thru 018 There are 70 group numbers They correspond to the group numbers established for programming sequencer instructions For our purposes we are using them to access user program addresses Figure 6 1 on the following page lists the 70 address group numbers Chapter Bi Monitoring E Inputs and Outputs Address Group Group number 0 gives you access to addresses of Numbers external outputs of the SLC 100 processor group continued numbers 1 thru 6 give you access to addresses of external outputs of expansion units Similarly group numbers 7 thru 15 give you access to addresses of external inputs of the processor and expansion units These 16 groups are the most widely used in TCAT applications Figure 6 1 External Internal External Output Addresses input Addresses Addresses internal Addresses 16 701 708 17 709 716 717 724 18 725 732 733 740 741 748 749 756 757 764 765 772 25 011 016 017 018 001 008 111 116 117 118 101 108 211 216 217 218 201 208 311 316 317 318 301 308 411 416 417 418 401 408 511 516 517 518 501 508 611 616 617 618 601 608 009 010 109 110 209 210 309 310 409 410 509 510 609 610 Group Numbers 38 thru 69 Groups 38 thru 69 correspond to addresses 901 thru 932 respectively They are used in special sequencer instruction techniques The TCAT display for these group numbers does not represent external input output addresses or internal addresses
31. n Case 1 Case 4 Processor does not have a user program in memory or the program does not contain any timer counter or sequencer instructions When you power up the system the TCAT will go thru its diagnostic tests then scan addresses 901 932 The following error code will then appear ide To correct this error enter a program having a timer counter sequencer instruction then place the processor in the Run mode Special Note Fine Time Base Instructions If your program contains fine time base instrue tions addresses 869 875 see Appendix A Chapter 3 8 Power Up Using Address 867 Figure 3 5 Basics of Operation An Examine OFF instruction at address 867 can be used in the SLC 100 program to automatically display any timer counter sequencer address you choose on power up An example is shown below 867 001 929 k CTU ES PR 500 On power up TCAT goes directly to rung containing instruction 867 PROGRAMMING NOTE Instruction 867 should be an Examine OFF programmed in series with the rung containing the instruction you want displayed on power up You can program instruction 867 anywhere in the rung to the left of the timer counter sequencer instruction We recommend that you use address 867 exclusively for this purpose This avoids the possibility of causing the rung to be FALSE unintentionally On power up the TCAT will go thru its diagnostics checks then immediately display the instruction in t
32. n holes for cooling on the upper and lower portions of the back cover If you make additional holes in the enclosure make sure the ventilation holes are covered to protect against metal chips entering the TCAT housing Chapter Installation Connecting A cable instruction sheet is provided with the the Cable TCAT unit Itis important that you read and follow these instructions when connecting the TCAT to an SLC 100 processor One end of the interconnect cable plugs into the socket on the top of the TCAT and the other end plugs into the programmer socket on the processor Cable connectors are keyed to guard against improper insertion Make sure the spring latch is engaged to secure the connector Caution The TCAT end of the interconnect cable is live We recommend that you disconnect the cable at the SLC end to guard against connector short circuits and possible damage to the processor Chapter Installation Figure 8 2 4 125 METT ao 8 mm 0 152 dia 3 86 mm I 3 812 4 holes Kurs 8 mm o 4 50 114 3 mm 5 00 127 mm O O Approximate cutout and drilling dimensions for the TCAT Chapter BES Installation Cleaning The following materials are recommended for Recommendations cleaning the front panel of the TCAT 1 Detergent Solution Typical household type cleaner 2 Isopropyl Alcohol 3 Methanol WARNING Solutions containing the following substances must not be used Chlorinated
33. n stop at 905 showing you the instruction symbol 05 TME indicator lit The TCAT keyboard is inoperative while the TCAT is scanning to an address number you are using in your program Chapter Power Up continued Basics of Operation To move to your next instruction you simply press the NEXT key If you do this while the TCAT is still scanning the display will again show the addresses You might happen to pick up the scan at address 928 the display would show 928 929 Ces a Pl then stop at 930 SEQ indicator lit Any time you press the NEXT key after the scan is completed the TCAT shows in sequence only those instructions you are using in the program In this case pressing NEXT repeatedly would alternately show instructions 905 and 930 Case 2 The SLC 100 processor is in the Run mode with the MAN AUTO switch set at MAN When you power up the system the TCAT will go thru its diagnostic tests and then display To clear this error turn the processor AUTO MAN switch to AUTO The TCAT will then scan addresses as described in Case 1 Chapter Basics of Operation 3 7 Power Up continued Case 3 The SLC 100 processor is in some other mode than Run When you power up the system the TCAT will go thru its diagnostic tests and then display chi To clear this error you must use the Pocket Programmer to place the processor in the Run mode The TCAT will then operate as described i
34. ncrementing Suppose you want to me 301 222 2 ACCU reset the AC value to zero TME The underlines are flashing prompting ACCUM you to enter a new AC value To enter a value of zero just press ENTER ENTER TME The AC value is incrementing from zero ACCUM You have just pressed the ACCUM key The AC value happens to be at 222 2 and Chapter Chapter Objectives Sequencer Characteristics SQO and SQi Sequencer Instructions In this chapter you will be monitoringthe PR and AC values of the individual steps ofa Sequencer instruction You will also modify the PR value of a sequencer step Sequencer instructions include the Sequencer Output SQO and the Sequencer Input SQD Both require the use of the Reset instruction RST The TCAT will access SQO and SQI sequencers but not the Reset instruction Sequencer instructions are represented by the following symbols 901 901 Address 901 932 sao gt Y sa 100 steps maximum The Sequencer Output SQ0 instruction can control the ON OFF status of up to 8 outputs for up to 100 steps The ON OFF status of outputs for each step is programmed The Sequencer Input SQI instruction differs from the SQO instruction in that the status of up to 8 inputs is programmed producing an output only when the status of external inputs matches the programmed data for the particular step Sequencers can be time driven or event driven
35. ontrol more than 8 bit addresses These instructions will sometimes share the same addresses operate according to the same rung conditions have the same preset value and have the same number of steps An example of this type of cascaded sequencer is illustrated in the figure below Figure B 1 Rung 1 Same Rung Event Driven Conditions 001 901 HA 5Q0 Event Driven Rung 2 002 901 Hl rs RAC O Rung 3 QO 901 can be programmed to control one set of outputs Group 0 for example SQO 901 can be programmed again to control another set of outputs Group 1 for example Appendix MER Special Sequencer B 2 Instruction Techniques Cascaded You can differentiate between the sequencer Sequencer instructions at address 901 by monitoring the Instruction instruction symbol The TCAT will display continued when monitoring the sequencer controlling group 0 The TCAT will display when monitoring the sequencer controlling group 1 Instruction symbols are explained on Page 3 3 Accessing the instruction symbol on power up or by using the Cancel key is described in previous chapters The instruction symbol should be checked before modifying the preset value of a cascaded sequencer step Important When modifying PR values of cascaded sequencers make certain that sequencer rung conditions are false then change the PR values of both sequencers Appendix Special Sequencer Instruction Techniques
36. s display tells us we are monitoring the AC value of step 0 Note You can call up the step number only when the display is showing the AC value or the PR value Display indicates the PR value of step 0 is 5 0 seconds The PR value is protected As you recall the CANCEL key calls up the instruction symbol The 1st digit of the instruction symbol indicates SQO the 2nd indicates time driven the 3rd and Ath indicate 1 O group 0 Chapter Modifying a Sequencer Step Figure 5 3 006 Rung 1 903 Rung 2 90 Rung 3 007 Rung4 Input Satisfied Status Bit Address HA RST Sequencer Instructions Figure 5 3 shows a typical ladder diagram ofa sequencer input This is a 4 step event driven sequencer involving 8 external input addresses For our purposes we needn t consider the Reset instruction rung 4 A brief table of programmed data is included in the figure Programmed data is coded In this case I O group number 7 indicates that 1 0 addresses 001 thru 008 are involved The mask data indicates that addresses 003 thru 008 are excluded from control The step data indicates which inputs must be ON and which must be OFF during each step in order to produce an output rungs 2 and 3 PR values are programmed directly Note that the PR values of steps 0 and 1 are protected meaning that we cannot modify them PROGRAMMED 903 SQI DATA _ pequericer Instruction
37. s moved the display to group 17 applying to internal addresses 709 710 711 712 713 714 715 716 Instructions at addresses 710 713 714 715 are ON Pressing these keys has taken us back to the initial display the down counter at address 901 We could also have accessed some other timer counter sequencer address by pressing I O the new address then ENTER Chapter ME Specifications Display Discrete Light Emitting Diodes LEDs and 7 segment LED readouts Keyboard Sealed and embossed 16 momentary push keys with tactile feedback Keyswitch Two position keylock switch with cover Modes of Operation Monitor and modify Error Code Identification Table On back of unit and on keyring ID tag Interconnect Cable 6 foot 1 8m cable Plug in connectors mate TCAT and processor unit Operating Power The TCAT receives power from the SLC 100 programmable controller via the 6 foot interconnect cable Remote connection up to 4000 feet is possible using a separate power supply rated at 10 8 to 26 4 VDC 4 watts for UL listing power supply must be NEC Class 2 Use Belden cable style 9503 or equivalent The Remote Communication Kit Catalog No 1745 N2 includes the necessary DIN connectors and the installation instructions Ambient Temperature Range 0 to 60 C operating 40 to 85 C storage Humidity Rating 5to 95 without condensation Noise Immunity NEMA Standard ICS 2 230 Vibration mounted
38. ts Chapter Title Page 5 Sequencer Instructions Chapter Objectives o 0 5 1 SQO and SQI Sequencer Characteristics 5 1 Monitoring a Sequencer Instruction 5 3 Modifying a Sequencer Step 5 4 6 Monitoring Inputs and Outputs Chapter Objectives 6 YO Monitoring Capabilities of the TCAT 6 Address Group Numbers 6 The TCAT Group Number Display 6 Monitoring Group Number Addresses 6 4 7 Specifications III A SAS EE EET 8 Installation Chapter Objectives 8 1 Equipment Checkout o o o 8 1 Enclosure Considerations 8 2 Mounting oo ooo o 8 3 Connecting the Cable 8 4 Mounting Template 8 5 Cleaning Recommendations 8 6 EE PE A Appendices Using Fine Time Base Contacts A 1 Special Sequencer Instructions B 1 C shift Register Instructions C 1 D EEPROM Memory Module D 1 E _Mounting Template E 1 Chapter ay Introduction The Timer Counter Access Terminal TCAT is used with the SLC 100 Programmable Controller It is designed for mounting in a panel cutout l usually the door of the controller enclosure With the SLC 100 controller in the Run mode the TCAT provides access to programmed timer counter and sequencer data This allows production supervisory and maintenance
39. ve tactile feedback Address display 3 character digital display shows addresses and other information Data display 4 character digital display shows PR and AC values and other information Instruction indicators TME green indicates an RTO or RTF timer CNT green indicates a CTU or CTD counter SEQ green indicates an SQO or SQI sequencer Protect PROT status indicator This red indicator is lit ifthe monitored instruction or sequencer step is protected in the program Data indicators PRESET green indicates preset PR value ACCUM green indicates an accumulator AC value Error code table Listed in English and French 10 Mounting screws 4 The TCAT mounts in an enclosure or panel cutout See Chapter 8 11 Cable socket labeled CC1 Plug the interconnect cable supplied into this socket and the programmer socket on the SLC processor Refer to Chapter 8 Installation Chapter m Equipment Overview 2 3 5 Data display 4 Address isplay display 8 Data 7 Protect status indicators indicator en 1 Keyswitch 6 Instruction indicators 3 Keyboard 11 Cable socket 9 Error code table 10 Mounting screws Chapter WE Equipment Overview Optional Remote The remote communication kit Catalog No Communication 1745 N2 allows you to locate the TCAT ata Kit remote distance up to 4000 feet from the SLC 100 controll
40. y CTU counter at address 901 PR value is 1000 AC value is 9999 PR and AC values are not protected Mode MODIFY These Display will show Explanation LEDs will be lit Address Data PRESET CNT 90 I 1800 You have just pressed the PRESET key to PRESET display the PR value of counter 901 To change the PR value press PRESET again PRESET CNT The four underlines are flashing PRESET prompting you to enter a new PR value 3 0 0 0 CNT 30 3000 The Pr value is changed to 3000 ENTER PRESET CNT 90 53999 The current AC value of 9999 is ACCUM displayed To enter a new AC value press ACCUM a second time CNT The four underlines are flashing ACCUM prompting you to enter a new AC value 2 2 2 2 CNT GO 2222 The AC value is changed to 2222 ENTER ACCUM Chapter WWW Timer and Counter 4 8 E ER Instructions Using the ENTER Figure 4 8 will show you how to use the ENTER Key to Reset the key to change the AC value of a timer to zero the AC value to Zero PR value can be changed to zero in the same way Arbitrarily we have specified that the AC value is incrementing The AC value and PR value of a counter can be changed to zero in this same way Figure 4 8 Keystroke Example Change the AC value of timer 901 to zero The AC value isincrementing PR and AC values are not protected Mode MODIFY These Display will show Explanation LEDs will be lit Address Data ress Address Data Data i
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