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  1. I am new to Automation Direct software and how the programs are written. Can anyone explain how they handle the analog outputs? My processor does not support the IBox that makes life easier, so I am having to do it the old hard way. I understand most of the logic of how its done for sending data to one channel but I don't understand how the channel selecting works. Can someone give me a programming example or explain how that works? I am looking at the online manual that Automation Direct provides for you for the analog module but I am having a difficult time trying to wrap my brain around how they do their analog stuff ><
  2. MC protocol

    Hello once again, before I'll dive into mitsu manuals, does anyone of you know if there is some special relay signaling that PLC (FX3GE) have lost communication via MC protocol? Thank you in advance
  3. Hello I have a scenario that's been bugging me for some time now. The scenario consists of a Micrologix 1400 that I need to control it's output from modbus/tcp. In detail what I really need is to be able to manipulate the O0:0 through modbus/tcp. The PLC would be the master and I would be the slave that triggers the connection to the master. I'm using a Modbus-Client on my PC and that should be the slave. Any idea as to how I can manage that? Currently I can send data to the master but everything is "stored" on B10 and I have no idea how I could write directly on O0. Thanks a bunch guys. PS: I'm borderline noob. 
  4. Siprotec Relay 7sj62

    I have 24 Siemens Siprotec relay(7sj62) which i want to communicate with Scadapack 330E (Schneider) on 103 Protocol. but every time I try to communicate it shows Slave device is failed to communicate. trying to communicating via serial (RS-485). What should i do..?? or do i need to communicate it with Siemens PLC..?? If so which PLC should use..??

    Hello everyone,   I'm a student who recently started programming, and I could really use some help.  I have a CPU-31 CJ2M OMRON PLC and a ADO41-v1 analogic card. I need help programming an analogic scale with a bipolar signal -10V to +10V to then control a drive, which will then control the motor. If anyone could help me out of give me some examples I'd be really thankfull.   Thanks!
  6. Gang, Hooking up an Automation Direct P2-32TD2P to an AC/DC LED and noticed the LED is always "on" a little bit. When the output is on, the LED is certainly on, but when the output is off the LED is still on by a fractional amount, not much but it's plainly noticeable the room lights are off. The CPU can be in Stop, no matter, power just has to be on. I think this has to do with the card's load disconnected error functionality. +24V and some fraction of amps is always present at the output whether the output is on or off. I talked with automation people at work who noted there is an Allen Bradley system that does the same thing, it caused them a problem, they had to use a relay or etc to make an off output actually be off. Has anyone dealt with this? I'm new to the Productivity software, but there doesn't seem to be a way to just turn it off in the IDE. It seems ridiculous to have to wire up transistors or relays just to have off be off. Thanks for any ideas.
  7. Relay Digital signals

    I have a CJ1M-CPU13. It will be used for a prototype and later if successful, a better PLC fit will be employed. This system does not have the ability to drive pulses for servo control. However, will this system relay a digital signal at ~1kHz? I also need the PLC to count the pulses, reset at 1000 and start again continuously and never miss an input pulse. I see that the published transactions give  <15 microsecond decision times. I would think it would be no issue. Thank you.
  8. Hi, I would like to provide the PLC control for a scenario where the temperature in a machine, heated by the two electric heaters, is controlled with use of 1 TCK and 2 s/s relays. Please see draft “plc4” sent attach. The TCK is fixed to the machine and is not in a physical contact with the heaters. Nominal temperature of machine is 200degC. The machine temperature tolerance is +/-2degC. This means that the heaters should be turned on when machine T drops to 198degC and turned off when T reaches 202degC.  For this moment I have created the start PLC diagram outlined on draft “PLC4”.  I am still learning PLC. Therefore, I would be very grateful for your opinion whether the PLC diagram shown on picture “PLC4”, in terms of the tools used (direct contact, direct coil, etc.) and their layout, is of proper design. I know that there is much more work needed to complete this task (e.g. set up of the variables, etc.). I am using Unilogic software. Please help. Regards
  9. I want to unify my programs and select only configuration words (the same program for many applications) . My problem is with the assigned outputs by the high-speed pulse output like PLS2, ACC, ORG ... I thing that the instructions JMP/JME may allows to use these outputs as normal outputs when HSPO functions is not required. Is it right ?
  10. Good afternoon Mr.PLC forum members.   We recently had a fuse blow on the wiring between a 1756-OF6CI analog out card and a control valve (which we have no feedback for - only the 0-100% output). Took a little longer to troubleshoot since we have no feedback and we also don't monitor individual channel status of the card. For input cards (1756-IF8H or IF16H), it's easy enough to use the under-range/over-range or broken wire signal to troubleshoot a blown fuse or bad connection, and activate an alarm. I have been told by our local consultant-technician that there is an equivalent monitoring bit for output cards. Reading the instruction manual for the 1756-I/O cards, the fault channel bits do not seem to have this type of function for the 1756-OF6CI. The fault bits only seem to look at the requested output values, and at the connection between card and PLC itself as far as I can tell.  Am I missing something?   thanks for your help
  11. I hate to start a new topic on such an old processor but I forced to keep this thing working until I can upgrade it.  We are having funny issues with outputs.  At first they were on a PLC5/60.  We suspected a bad processor so we changed to a PLC5/40 we had in our tool crib and the problem didn't go away.  Some of our outputs in the ladder are being evaluated to true but not turning on.  We can force the output on and it will come on and when we remove the force it will turn back off.  I've never seen this problem before on any processor.  All the logic leading up to the output is true but the output is not turning on and is there not green. I've already checked all the obvious causes.  The instruction is an OTE.  The output is not duplicated somewhere else in the logic that is turning it off.  The ladder file is being scanned.  I replaced the output with a B3 bit and on the next line had the B3 bit turn on the ouput.  The B3 output bit turned on but the output did not.  This output is on a remote I/O rack and other outputs on that rack are working. Any ideas would be greatly appreciated.
  12. Hi there, is somebody experience whereby the output of the 1769-OF4Ci is not responding on the value entered?.  Setting: 4-20mA Res: 0- 32767 - PID set whatever value I key in the output current remained.  please help. Ganie
  13. Hi All, We have an old machine using a Mitsubishi Fxo-30MR/ES and I will be replacing the PLC with a FX3S-30MR/ES.  This old machine would power some led's on a panel mounted PCB using the PLC outputs.  The 24V from the PLC output would go to the PCB board where a resistor would drop the voltage for the LED.   This PCB is damaged I would like to avoid getting a new PCB made and instead power some panel mounted LED rated for 24V directly form the PLC output.  I guess these panel mounted LED have a built-in resistor.  Power consumption for the LEDs are 20mA at 24V volts.  The 24V power supply has plenty of capacity for this. Are there any issues with doing this? I have attached the spec sheet for the panel mounted LED (I will be using the 24V versions).   Panel Mounted LED.pdf
  14. Hi I am searching for plc having negative analog input and output. i.e. 0 to -10v analog i/p and Analog o/p.  Can any one help me in finding plc which has this feature .  Thank You  
  15. Fx3g Binary bit Output

    Hello, Need your advice. I am trying decimal number convert to binary and do output. for example If inside  D90 I have 11 decimal number then for me need active output Y0, Y1 and Y3. I tried make this code below, but it is not work, don't active output . Maybe fx3g PLC have function how need to do it?
  16. Elecrical Control Panel

    Which type of electrical panel is most reliable, give some idea about that ..?
  17. Hi to everyone, I use PowerFlex 520 drive on profibus (with adapter 25-COMM-P) for first time. I managed to start/stop/reference drive using Logic Command/Status I/O but didn't manage to get output current using datalinks mechanism. I configured DP master (Mitsubishi Q PLC, QJ71PB92V) as shown in the attached picture. The main problem is that trying to modify C161-C164 (Opt Data In 1-4) parameters drive does not accept the entered values and it turns back to value "0". First, I disabled I/O connection with the controller Disconnecting the drive from the network. On the other hand, drives allow me to change parameters C165-C168 (Opt Data Out 1-4) but these are out paramenetrs (from the controller's point of view). Is there any guy that managed to get the output current  in any way on profibus network? Thanks a lot for your help in advance! I post this message in Allen Bradley Forum, too.
  18. Hi to everyone, I use PowerFlex 520 drive on profibus (with adapter 25-COMM-P) for first time. I managed to start/stop/reference drive using Logic Command/Status I/O but didn't manage to get output current using datalinks mechanism. I configured DP master (Mitsubishi Q PLC, QJ71PB92V) as shown in the attached picture. The main problem is that trying to modify C161-C164 (Opt Data In 1-4) parameters drive does not accept the entered values and it turns back to value "0". First, I disabled I/O connection with the controller Disconnecting the drive from the network. On the other hand, drives allow me to change parameters C165-C168 (Opt Data Out 1-4) but these are out paramenetrs (from the controller's point of view). Is there any guy that managed to get the output current  in any way on profibus network? Thanks a lot for your help in advance!  
  19. Hello, I have a remote io cabinet with a rack of Siemens ET200isp. This was chosen because the almost all of the equipment connected to it comes from the hazardous area and is Ex ia. This presents me with a problem because I have two pumps that I need to turn on and off with this rack, and I cannot drive a contactor with intrinsically safe io for 2 reasons: 1. The power output is too low to pull in a contactor 2. There would be no barrier to separate the intrinsically safe wiring from the 'safe area' wiring containing the 3 phase for the motors. Output card is a 4 F-DO Ex 17.4V/40mA (6ES7138-7FD00-0AB0) My original plan was to use a Pepper and Fuchs KFD2-SR2_Ex2.W on the output of the Siemens DO card to provide a safe area dry contact that I can use to power my contactor. This did not work however as the KFD2-SR2 is not designed to be connected to an active current source, so both the IO card and the barrier were trying to power eachother and switching was not possible. I can get it to work if i power a standard 24v relay from the DO card, however this does not solve the problem of properly isolating the hazardous area wiring from the safe area wiring as a relay is not an intrinsically safe barrier. I can put a zener barrier in line with the coil of the relay however this cuts the power down too much and the relay contacts do not reliably pull in. I'm asking if anyone has any ideas, we are beyond the point where installing a new IO rack that is non-ia is an option, it would require a whole new cable run for the profibus. Is there such a thing as a relay that can be powered by the intrinsically safe output? I hope that is enough detail, please feel free to ask if more info is required. Thanks in advance for any suggestions.
  20. RSlogix500 Tutorials `

    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   1. What is a PLC Part1  2. What is a PLC Part2 3. What is a PLC Part3 4. What is the Binary Numbering System 5. Relay Logic Intro 6. Relay Logic Intro Start/Stop with a seal 7. Relay Logic to Ladder Logic 8. RSlogix Communication Driver and Configuration Tutorial 9. Micrologix500 Communication Set Up Tutorial 10. Timing Relay Lecture 11. RSlogix500 Timer On TON Instruction Tutorial 12. RSlogix500 Timer  Off TOF Instruction Tutorial 13. RSLogix500 Retentive Timer RTO Tutorial 14. How to do Online Edits in RSlogix500 15. RSlogix500 Counter Tutorial 16. RSlogix500 Counter Up CTU Tutorial 17. RSLogix500 Move MOV instruction Tutorial Part 1 18. RSLogix500 Move MOV instruction Tutorial Part 2 19. Rslogix500 Compair Instructions , LES, LIM, EQU etc Tutorial 20.How to Create a flashing bit in RSlogix500 using timers 21. How to Create a program with a flashing light  
  21. Horner XL4

    Greetings, I'm having trouble with a Horner XL4 power cycling itself when 120 V is switched with its relay outputs. I have tried both polarities and slowing down the switching quite a bit. The unit appears to power cycle even when the relay is not switching, and only when 120 V is applied to the relay outputs. I am driving a control 24 - 230 V AC/DC light off an on once a second or so, with the identified/neutral attached to the 120 V AC / 12 V DC PSU. Would anyone be able to guide me into what could be causing this? Thank you.
  22. I've got a PLC stack with a Q64AD analog-digital converter card. I am attempting to read the digital output value of channel 1 but I am having issues. First of all here is my simple PLC program: I got the program from the Q64AD user manual. You can see there is a blue '0' on the right of line 0. I assume this is the value that is being read? When I monitor the D11 device in GX Developer it shows a '0'. The following is a screen from Online > Monitor > Buffer memory batch. My card has a base address of 0x60 and channel 1's offset is 11d (0Bh). The value on the highlighted line does change so I know that the analog card is correctly picking up on current changes from my source. Lastly here is an image of my digital inputs. I have set up the Q64AD card through the GX Developer PLC Parameter window and left all settings as default. I initially used 'K11' instead of 'H0B'. I have also tried using the MOV command (MOV U0\G61 D11) but that game me the same result. Can anyone spot the flaw in my program of configuration? Do I need to configure the PLC in order to use the 'D' devices? Should I try copying the value somewhere other than D11? Thanks
  23. Micrologix 1400 Problems

    I have been using a micrologix 1400 L32bxba. I have had a reoccurring problem of the contacts sticking on the processor. I have added diodes on the coils of the contactors. Using 700CB220EJ relays. I also have the problem of the leakage current being so high it pulls in the relays with the output off. Any help would be appreciated.
  24. Need help with OB16E

    I am trying to determine or find any figures that could assist in obtaining the lifespan of a single output of a 1756-OB16E output card. I have a signal sending 400 pulses a minute to an output. I am starting think about when this card or output may need to be replaced before failure. I was given a MTBF range by Rockwell for the card itself but they could not expand on the likelyhood of the output failing exponentially due to the rapid signalling. I could also not find anything in the manual itself that could provide me with an idea of longevity, I could be missing it? Also with this project I experienced something odd with the originally scoped hardware, a solid state 24VDC relay (700-HLS1.) By measuring the resistance I was able to see that the relay should have been opening and closing but the signal was not being received. So, I swapped the solid state relay for a mechanical relay and it worked fine. I was curious if the leakage could have an effect on this. The problem with the mechanical relay is that the life is dramatically reduced to about a month for this installation, life for the relay is shown at about 10,000,000 actuations. I was hoping to have this working with a little longer life expectancy. If anyone has any experience / tips / or suggestions it would be much appreciated! PG
  25. I'm new to Omron, and after several days of diving into manuals trying to figure this out on my own and giving myself a headache I've come to accept that i need help. my task is the following: Control of the discrete and analog inputs/outputs in a DeviceNet system using an Omron CJ1M PLC’s and PT’s. Use at least one thermocouple, one analog input, and one analog output for the DeviceNet network. Use a pushbutton and a light for the start of the process and an indicator for the started process. I have a Drt1-Ad04 input, a Drt1-ad02 output, and a Drt1-ts04t temperature control. My devicenet is Cj1w-drm21, The Omron system itself is a cj1m-cpu13 etn21. I have node addresses for my input, outputs and temperature control, those being 35 for input, 25 or 30 for output and for temperature control 5, 15, or 20. The ip address im using for this project is'm using Cx programmer, Designer and Integrator. On Cx programmer I've managed to create an IO table but i have no idea on how to begin the program or even get a current reading from my generator.On Designer I've made what i believe to be the layout of the pushbuttons, I just have no idea of what addresses to enter.And on integrator i'm having troubles on figuring out how to make a routing table. I've went through many manuals and either i'm missing something really basic here or I just have no idea on what I'm doing. The only advice I was given was to dive into more manuals and find my addresses for my inputs, outputs, and temperature or to find the information from an outside source be that a forum or customer service. I am able to provide more information, and screenshots of what I have done if needed. Any kind of help would be greatly appreciated!