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I was hoping to get feed back on my website.  The site is for beginner PLC programers. The tutorials start right from the beginning with describing what a PLC is and then teaches basic instructions. Please take a look and tell me what you think, I would love the feedback.   thank you   ladiesandtech.com   1. What is a PLC Part1  https://ladiesandtech.com/2015/12/03/watch-whatisaplc1st-on-youtube/  2. What is a PLC Part2  https://ladiesandtech.com/2015/12/09/watch-what-is-a-plc-part-2-on-youtube/ 3. What is a PLC Part3 https://ladiesandtech.com/2015/12/15/watch-plc-programming-tutorial-for-beginners-part-3-on-youtube/ 4. What is the Binary Numbering System https://ladiesandtech.com/2016/04/01/watch-what-is-binary-numbering-system-and-how-to-convert-to-decimal-on-youtube/ 5. Relay Logic Intro https://ladiesandtech.com/2015/12/04/start-stop-motor-circuit/ 6. Relay Logic Intro Start/Stop with a seal  https://ladiesandtech.com/2015/12/04/watch-stop-start-relay-control-circuit-on-youtube/ 7. Relay Logic to Ladder Logic https://ladiesandtech.com/2015/12/04/watch-relaystopstarttoladderlogic-on-youtube/ 8. RSlogix Communication Driver and Configuration Tutorial  https://ladiesandtech.com/2016/01/14/watch-allan-bradley-comms-set-up-on-youtube/ 9. Micrologix500 Communication Set Up Tutorial https://ladiesandtech.com/2016/01/14/watch-allan-bradley-comms-set-up-on-youtube/ 10. Timing Relay Lecture https://ladiesandtech.com/2016/02/11/watch-timing-relay-on-youtube/ 11. RSlogix500 Timer On TON Instruction Tutorial https://ladiesandtech.com/2016/02/14/watch-plc-rslogix500-timer-on-delay-ton-instruction-tutorial-on-youtube/ 12. RSlogix500 Timer  Off TOF Instruction Tutorial https://ladiesandtech.com/2016/02/16/watch-rslogix500-ladder-logic-timer-off-delay-tof-instruction-tutorial-on-youtube/ 13. RSLogix500 Retentive Timer RTO Tutorial https://ladiesandtech.com/2016/02/19/watch-rslogix-ladder-logic-retentive-timer-on-rto-tutorial-on-youtube/ 14. How to do Online Edits in RSlogix500 https://ladiesandtech.com/2016/02/29/watch-how-to-find-and-download-autocad-files-for-allen-bradley-ab-plcs-and-products-on-youtube/ 15. RSlogix500 Counter Tutorial https://ladiesandtech.com/2016/02/25/watch-rslogix500-counters-on-youtube/ 16. RSlogix500 Counter Up CTU Tutorial https://ladiesandtech.com/2016/02/26/watch-rslogix500-count-up-ctu-instruction-tutorial-on-youtube/ 17. RSLogix500 Move MOV instruction Tutorial Part 1 https://ladiesandtech.com/2016/03/14/watch-rslogix-tutorial-on-move-instructions-part-1-on-youtube/ 18. RSLogix500 Move MOV instruction Tutorial Part 2 https://ladiesandtech.com/2016/03/14/watch-rslogix-tutorial-on-move-instructions-part-2-on-youtube/ 19. Rslogix500 Compair Instructions , LES, LIM, EQU etc Tutorial https://ladiesandtech.com/2016/03/17/watch-rslogix-tutorial-on-compair-instructions-grt-lim-equ-les-etc-on-youtube/ 20.How to Create a flashing bit in RSlogix500 using timers https://ladiesandtech.com/2016/03/24/watch-how-to-create-a-flashing-light-program-in-rslogix500-on-youtube/ 21. How to Create a program with a flashing light https://ladiesandtech.com/2016/03/24/watch-how-to-create-a-flashing-light-program-in-rslogix500-on-youtube/  

Im working on a way to reset a RTO (retentative timer) that counts how long a motor runs above alarm current levels and keeps a record of the highest current recorded... currently it just counts forever but I want to reset it each month... and to possibly move data into monthly registers to evaluate and compare.   I have my GSV setup monitoring the clock and am trying to think of a way to monitor my WALLCLOCK[1] DINT that houses the month (Currently 2)   I want to trigger a reset anytime that DINT  changes state.... any ideas?? 

Hi guys, newbie programmer needs help with your expertise. From the attached logic,I have 2 identical outputs to control (image shows 1) with a switch it changes modes where one mode outputs are independent and the other dependent of each other. in the dependent mode, the outputs control are independent up until B3:0/2 and B3:0/4 (Inj01 and Inj02 bits) are toggled. What i need next is a sort of flip flop where the first output O:0/1 goes first until a 1st transducer reaches a given set point disabling bit B3:0/2. before B3:0/2 gets disabled by 1st transducer , bit B3:0/4 becomes active waiting to enable 2nd output O:0/3 and vice verse when 2nd output gets disable by a 2nd transducer. i really would appreciate if somebody point me in the right direction. I couldn't come up with a simple solution. I hope i explained myself Thanks in advance

So I was out in the field a few days ago and encountered an issue I have never run in to before on a Micrologix 1400 using RSLogix 500. All was going well when I was checking the I/O's until I realized that although I would get an input, the virtual output (B3) would not turn on... I have encountered something similar in Siemens programming where if you accidentally have 2 coils using the same register, they act as an AND instruction. When I was completely stumped I decided to make a completely new program and just put a few inputs and a few coils in, and everything worked fine... Could this be some sort of memory overlapping issue I am having? Any advice or tips would be greatly appreciated.

Hello. I searched for an answer for this but it is still not very clear to me. I have a new Guardlogix 1756-L72S. I would like to create a project to work with it with firmware version 20.13. I have RSlogix5000 v20.01(CPR 9 SR 5) which should be compatible with it (in fact I can open projects with another guardlogix that have that firmware version) BUT when I create my new porject, the firmware version RSLogix5000 puts is v20.11 1. How could I create a project with the firmware version 20.13 for my guardlogix? (Didn't find an AOP for this) 2. If I update the guardlogix to firmware 20.13 with the CONTROLFLASH, could I still be able to go online and work with it, even though my project has a different firmware version? Thanks!

Several years ago before I arrived at my company, an integrator came in to do the automation on our system. They used a Controllogix 1756-L61S for the safety portion of the project. Apparently, when they completed the job they did not provide the source code with comments, safety password, etc. for anything and it got ugly between our company and theirs. In other words, they would not provide it if we went back to ask them. Allen Bradley has told us that we can not make any alterations now to the safety logic because we do not have the password that was used to create it. And they said there is no longer a master password that you could use like in previous controllers. Does anybody know of any workarounds for this? Or have heard of anything that might possibly work?

I am installing a new device that is really easy to set up with an add on profile (AOP). However, the PLC I am using is only a version 13.44, and I need it to be at least version 15 to use the AOP. Is there a way I can upgrade the PLC to a newer version so I can use the AOP?

Hey, this may be an obvious question, but here goes: I have a CompactLogix L36ERM running RL5000 controlling one of our lead die cast machines. When I make a change to the program offline and need to download I always go and shut the machine down for safety reasons before downloading. One of our techs stopped the machine but left the control power and hydraulic pump on while downloading (something we are not supposed to do) when he finished downloading he switched it back to run mode and the machine closed on it's own and started right back up. This is a safety concern to me. We have a "close enable" tag that is true when all necessary conditions are met, and gets latched on when the machine is running in full auto. Before he downloaded the machine was at idle, meaning that the only way to close the machine would be to press the two dead-man switches to start the process. But, when he downloaded it started up automatically. Now I know the reason why is when the program was last saved, the "close enable" tag had a value of 1, it was latched on, so it bypassed the dead-man switches. A quick fix would be to save the program with that tag un-latched so that it can't start up on it's own after downloading. But, in case somebody saves the program while the machine is running and with that tag latched on, I need a better solution. Is there any tag or bit that goes true when a program is downloaded or when the mode of the PLC is switched from run to download to run? I want to manipulate that tag so that when I download it un-latches the "close enable" tag. I'm sure there is a way to do it, I'm just not even really sure what to search for in the online help. Any help is greatly appreciated. Thanks Howard

In RSLogix5 you used to be able to "enable secondary save" where you could save it to two different locations every time you saved. I don't see that in RSLogix5000. Does anybody know anything about this? Thanks

Hey guys, so I feel like I must be doing something wrong here, well obviously since I cant get it to work. So I have a CompactLogix L36ERM running RSLogix5000, I've got 28 cards in total, all working except for one. My 1769-OF8V Analog Ouptut module. I just want to be able to output a 0-10v signal to a proportional valve module, specifically a Parker PCD00. Anyways, so I am online with the processor, everything is looking good, I/O is responding. I have the specific channel on that output module enabled in the module properties. I have tried changing the data type to every different option, I have raised and lowered the limits. I think I am addressing it correctly. I am just trying to move a value into that channel's data file. It appears to be moving the number in just fine, but when I put a meter on the output for that channel, I get 0V from the output to analog com. There is a little switch inside the module that allows you to use rack power or external 24V, I tried switching it down and using an external 24VDC source, I currently have it switched up to use the rack power. I'm lost. If somebody could please help me out and tell me if there is something obvious that I'm missing or doing wrong/ take me through an easy step by step way of setting this up for basic 0-10v output, that would be great. Sorry for being so new, I have attached a couple screenshots of the logic I'm using and the way I have it configured right now, but I have tried all different configurations. Thanks, Howard

Hello all, I'm new to this forum, hope I will be able to get some answers on this forum. I'm wotking on maintanance for machines under productiona and I would like to conect one machine to my work PC. But when I try to setup conection with RSLinx, RSLinx don't see my PLC. Problem is that my PC is on network with IP addresses 192.168.8.XXX and machine is on 192.168.0.1 IP address and between is cisco RV180 routher which is set to have LAN address 192.168.8.168 (company network), and WAN is set as 192.168.0.200 (subnet 255.255.255.0, gateway 192.168.0.201, dns 192.168.0.202). When I conect directly 1756 ENBT/A card to my laptop (laptop is set to same range of IP addresses) I can see PLC and everything is working but this way is not practical for me. Is there any way to conect my office PC to PLC, some settings in RSLinx Clasic? Any idea would be helpful. I attached simplified network drawing for easyer understanding. network.pdf Thank you for your time and help, best regards, baric1007

Hi everybody, I am new in these issues and I have faced a problem that is driving me nut. I am building a mixing batch HMI and its PLC program. In my HMI I created an analog tag that stores and integer number. This tag is responsible to comunicate with an analog input of the PLC I/O expansion module, whose address is I:1.0. In my HMI I put a numerical input box to send values to this analog input, but every time I write a value in this box and press the enter key the numerical input box gets red and don't send the value to the plc. Appear the following error message "cause: Addressing problem or memory protect rungs" on the left botton corner of the HMI. Some pictures are annexed to describe better. Anybody knows what can I do? I am using PLC SLC 5/03 + Analog module 1746-NI4