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  1. Hello, I'm currently researching Rockwell controllers for our PLC implementation, but there are some aspects I couldn't find in the manuals.  I would greatly appreciate it if you could provide more details on the following: ①Procedure for Adding Modules Online: In the manual "1756-um001p-en-p," it mentions the possibility of adding units online.  However, I couldn't find specific instructions on how to do this.  For instance, with I/O modules, I assume it's as simple as physically attaching them to the chassis using RIUP,  but I'm unsure about the software side (e.g., Logix5000) and any operations required on the controller itself. ②Online Module Addition for Remote I/O: The manual mentions that EtherNet/IP modules can be added online. Would it be possible in either of the following scenarios?  ②-1 Adding I/O modules to the chassis of an existing remote I/O station.  ②-2 Creating a new remote station. Our investigation has hit a roadblock, and we're in quite a quandary.  If you have any information on these matters, your guidance would be greatly appreciated. Thank you.
  2. I need to Migrate 10 micro logics 1100/1400s. They are all in the same room but in different cabinets. Changing any wiring would be expensive and not an option. They all have small projects and have between 0 and 30 I/O each. The processes are critical and can not shut down or be unreliable in any way. Option one: Micro 800s and CCW.   I realize this is the straight forward answer but my customer hates CCW and may refuse this. Option two: Install one nice modern controller to replace all of them and use remote I/O. This is my first instinct but I am worried about these critical processes now depending on Ethernet networking to function, I doubt the customer wants to pay for network upgrades. Option three: Multiple compact logics i.e. L306s To me this is nice, but overkill and expensive.   Any better option?   Open to opinions     
  3. Hey everyone, I'm new to programming PLCs and I've run into a problem. I have a Micrologix 1400 Series B PLC, and for the past month, I've been using a free trial of RSLogix 500 Starter. But now, the trial ran out, and so I bought a license for "RSLogix Micro Starter". The problem is that when I downloaded my updated file to the PLC for the first time with micro starter, the PLC's outputs don't work anymore. I checked the PLC screen and the inputs from the HMI screen are getting recognized, but the inputs from the physical sensors are not. Also, none of the outputs are being activated on the PLC at all, which I can tell by looking at the I/O status on the PLC screen itself. I then uploaded a new test program, where you press a button and a light turns on, but that doesn't work either. I haven't changed any of the physical wiring, only thing I've changed is that I'm using RSLogix Micro Starter as opposed to RSLogix 500 Starter. I spoke to a Rockwell technician about this and he said that there shouldn't be any problem, as I haven't done anything wrong. So I now ask everyone on this forum if they could help me out a bit.
  4. I have an Allen Bradley 5069-L306ER CompactLogix 5380 Controller that I cannot connect to. I tried pinging the controller and I did not get a single reply. I went on RSLinx Classic and I can find it there. My coworks have no issues connecting to it. They use the same cables and adapters that I use.  What am I doing wrong. I can go to different PLCs in our plants and I have no issues connecting to them.
  5. Hello, has anyone had success in creating a wedge with borders that change due to its assigned tags? Attempting to create a range on a gauge using wedge, but am unsure how to approach this considering it wouldn't be rotating the wedge around a point but rather changing the size of the wedge. 
  6. Hello! First time poster!I am trying to access a PDF file on the removeable SD on the back of the panelview (Storage Card2) and get an error using ActiveX Controls;"There was an error opening this document. Sharing Violation!"The HMI is a  2711P-RDT15C I have called Rockwell support, as well as used various articles from the RA DB and still nothing. Things I have tried: - Reading from various storage cards and USB devices - Reading from my documents - Various syntaxes:       "\Storage Card2\M1.pdf"       "Storage Card2\M1.pdf"       "Storage Card2/M1.pdf"       Many others as well w changes in slashes, spaces, etc - Power cycling between failed reads FoxItReader CAN open. The file CAN also be selected and opened by browsing the OS on the PV - both on the storage card and when moved into my documents. The current parameters for the ActiveX program launcher are: Program location: "foxitreader.exe" Program Parameters: "Storage Card2\M1.pdf" If anybody has any insight into this issue it would be greatly appreciated.
  7. Hi everyone! I am attempting to read EIP tags from an Allen-Bradley ControlLogix from an Omron NX1P2 using the Sysmac Studio function block "CIPUCMMRead." I have been successful in reading arrays and single variables no problem. However, when I want to read arrays from a structure in the Allen-Bradley PLC, I always get an error code in the CIPUCMMRead ErrorID of either 0400 or 1C00 for ErrorID and ErrorIDEx is FF00 2105 depending on what I enter in for Size on the function block (attaching screenshots with both error codes).   The errors show on multiple "read" function blocks at once but it only affects data coming out of the function block where I try to read in a BOOL array from a structure in the ControlLogix PLC. If I enter a UINT#1 for the Size, I get ErrorID 0400. If I enter UINT#2, 3, or 4, I get ErrorID 1C00 with ErrorIDEx being FF00 2105. I've been digging for a while and can't find that specific combo of codes, but it looks like it's a size issue. From what I can tell, the Size is in Bytes. So if I have 32 Bools it should be a Size of UINT#4 max, right? Any help would be greatly appreciated! The function block having issues is setup the exact same as the other two that read from the same structure; I even copied and pasted them from each other and just changed the FB name and the postfix in the SrcDat string (from MyBools to MyDints/MyReals). Here are the screenshot: 1. Allen-Bradley Structure 2. CIPUCMMRead Function Block with size 4 3. CIPUCMMRead Function Block with size 1
  8. Hi there! This is my first time using Rockwell automation software and I have some questions I can't answer. When I'm running the FactoryTalk runtime application with a simulated controller, I get disconnected from Logix Designer, so I can't online watch the program. If I try to simulate using 'Test Application' in FactoryTalk View Studio, it appears to communicate, but buttons don't make any effect when pressed.   Hope you can throw some light on it! Thanks in advance!  
  9. Hi there! I have an Allen-Bradley SCL05/04 PLC. It has an RS-232 port, a 3 DH+ connector and a circular port with programming pins. An NB-Omron HMI is connected to the RS-232 port. And of course I can only have the screen connected. Is there any possibility to connect through the PLC programming port to be able to follow the program online?   Here is atached photos of the PLC:      
  10.   Replacing dead powerflex 700 with 753 talking via ethernet. Any good instructions on how to update the file from 700 to 753 on rslogix 5000?                                    
  11. Hi, Does anybody know if its possible to access the "Inhibit Module" tick box within the Hardware Device Connection tab from the PLC code? I'm hoping to turn this on / off depending on whether certain modules of machine are physically installed.  e.g. A Kinetix Drive / Point IO etc. Thanks
  12.  I've been debating whether to stay at my current employer who uses Emerson PAC software, vs going back to a similar company that uses Rockwell (compact/control logix) mainly because A-B is used by most companies around here. I work as a technical temp, usually 12 month contract jobs. Learning the Emerson PAC (aka Prophecy) seems to be a waste of time, since I am not aware of any companies that use it, other than my current employer. My placement company is pushing back, but I know I am correct. I do not have hard numbers, but I've been around the industry for 20+ yers, and have only seen 1 company use Emerson.   Does any one agree or disagree, or have some circumstantial evidence of the actual market share of A-B vs Emerson. I am mainly working in the Auto industry, in Michigan. Just looking at this site, there are 3200 postings for GE and Emerson combined, vs 58,000 postings for A-B. 
  13. I'm trying to exchange some data between two controllers. I've used a manual which describes Tag Datalink communication. Everything works fine on the Bradley side, which means I can read values from Omron without problems. However, on the CJ it isn't working. In the Network Configurator I get error every 10 sec (Tag data ling error, code 03D5) and cannot read any data from AB. When I open Connection Structure Tree I see that the input tagset from AB has 'Broken path (0000000000000)' and Unknown Device right next to IP address. I've tried using EDS from the Rockwell as well as uploading it from AB PLC directly - I don't know if it might be EDS issue. The only thing I noticed that inside CJ2M-EIP21 EDS it says that Ethernet/IP is Class 1 connection, however in the 1769-L35E EDS Ethernet/IP is Class 2 connection. Have anyone ever had such a problem?
  14. Been seeing a high failure rate on these PLC's on 2 of our processes. The control power is feed through a APC UPS to a 24VDC power supply to power the unit. Getting a hard fault where the OK LED comes on red and stays red. It never sequences through all the LED on power up. Tried the hard boot by holding in the reset button and applying power. Has anyone on else seen a high failure rate on this model PLC? TIA..
  15. I have a 1747-L30B SLC Brick and it is set to load from EEPROM on boot S:5/8, Error S:1/10, and Run S:1/12. I need to make changes to the program and then store it to EEPROM via "Comms>EEPROM>Store to EEPROM."  When I attempt to store the program with changes, it displays the message "Insufficient Memory Module Size." I assumed the EEPROM memory was maxed out, but I also uploaded the existing program currently stored to EEPROM, made no changes, and attempted storing it back to EEPROM and received the same message. Any advice?
  16. Hello, I am experiance a problem with a consumer tag staying stuck on. Producer and Consumer PLC are turned on. Information is getting transfered like it should. The Producer PLC gets powered off and the tag that is getting transfered over is ON before it gets powered down. When I check the tag in the Consumer PLC the consumer tag is still ON. Shouldnt the consumer tag go to the OFF state once the commincation has been lost?
  17. Hi Everyone, I have a small project where I need to detect temperature and smoke using Allen Bradley Micro820 PLC and send email when the temp is above or below a set limit. And since I'm new to PLC world I'm not quite sure which sensors would work with my plc model. It would be really helpful if anyone could guide me through and suggest any sensors appropriate for temperature (surrounding temp not liquid temp) and smoke. 
  18. Please let us know if anyone needs any of their Allen Bradley plc equipment repaired. We do component level repairs to restore your defective units back to full functionality. You can reach us at or visit us at to get a free quote. If you have a part you need repaired that you can not find, please contact us.  All repairs come with a full 1-Year warranty and also include a complete refurbishment and testing to extend your units life cycle. Any member of this site will also get a twenty percent discount.  Thank you, Otto Automation
  19. Hello, I'm new to setting up my controllers and communication between devices.  We wanted to see if using Modbus TCP/IP to communicate to a load bank was the right path for us.  I was able to configure my Micrologix 1400 controller Channel 1 for Modbus and set the data files.  I set up a read holding register 03 message, two write single register 06 messages and one write multiple registers 16.  I was able to read the data from the load bank, but I was unable to send any write commands.  I didn't get any errors in the messages.  I was able to send write commands through my pc to the load bank and it responded properly.  So I was thinking I must of missed something in my set up in the PLC. I'm attaching the PLC Program and the command set from the manufacturer.  Any help would be greatly appreciated. BENCH_TEST.RSS ALx Series Input Command.pdf ALx Series PWR Command Page.pdf ALx Series Setpoint Command.pdf
  20. Hi, So I have a problem, that BootP DHCP server doesn't find my 1734 AENTR series B and so I can't assign IP address to it. Been trying many things. Any advice? I'm new to AB and I guess it may be a really easy thing but so far I didn't find a solution. 
  21. Hi All, Has anyone had the experience of connecting two Fernhill Scada units using an OPC UA?  I am intending to use Fernhill Scada on my Master PLC to read tags from my Slave PLC's Fernhill Scada. Then, displaying local tags (Master PLC, "Fernhill SCADA Unit 1") and read/scanned tags from the Slave PLC, "Fernhill SCADA Unit 2". In the meantime, I am trying to use both of my Fernhill SCADA units interact with each other (one unit to read tags from the other unit) by using Internal Digital Tag on the Fernhill SCADAs.  Any help would be appreciated.
  22. Hello all,    I have 3 kinetix 5500 drives connected in series but some how the 3rd drive lost power. all the fuses in the cabinet look good. nothing else is tripped either.    any advice is appreciated.  thank you   
  23. Hey guys,   I am looking to query a database through FactoryTalk SE.  I will be scanning packages, and using that bar code to find a lane assignment from the database.     My question has to do with where the VB script will reside in the FactoryTalke SE program.  I want this script to run at all times.  I see that each screen has a "VBA Code" but I am assuming that these will only run when the screen is visible.   Where does this have to be stored in order to run all the time?   Thanks In Advance!
  24. Hello all,  There are two pressure gauges in a line with a flow of water. The flow is controlled by the pumps which is controlled by the PID whose control variable is pressure gague -2 . In ideal condition the pressure gauge -2 remains at 55 psi and pressure gauge -1 stays at 82 PSI. But in the line if someone opens a manual valve then pressure gauge - 1 reads 100 psi because the pump is running as per pressure gauge 2 . Is is possible to clamp the PID so that pressure gauge 1 remains at 82 psi.    FYI: Pressure gauge 1 is right after the pumps and pressure gauge 2 is at the end of the line. 
  25. PWTech is a rapidly growing company specializing in wastewater treatment equipment. We are currently hiring for a Controls Engineer. This is a full time position with some travel required. Requirements: 3-5 years experience Proficient with Allen Bradley MicroLogix, CompactLogix PLCs, PanelView HMIs Proficient with ladder logic programming Proficient with basic electrical theory, control systems and electronics Familiarity with NEC, with special focus and understanding of articles 409, 430 A high level of proficiency in written/spoken English Familiarity with Unitronics PLC/HMI is desired but not required Duties will include: Producing control panel submittal and as-built layout drawings, components lists, and line diagrams Selection and integration of sensors, motors, control systems and other mechanical and electrical equipment. Coordination with internal and external project engineers to resolve electrical and control questions and issues Programming, modifying and troubleshooting Allen Bradley and Unitronics PLCs and HMIs Providing assistance and remote support to field personnel Maintaining inventory of long lead items for warranty and project purposes. Location: Rosedale, MD (outside Baltimore) Technologies: 50% Allen Bradley 50% Unitronics. Salary: 95k-105 depending on experience. Higher if you have >10 yrs experience. Contact: