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  1. Hi, very new to PLC programming and desperately looking for some help to finish my project! I need to program a pump to run based on the level in a holding tank. The start/stop set points change throughout the day based on the time. For example, function for the start set point is 1.15372×10^-6 x^6 - 0.000114068 x^5 + 0.00448866 x^4 - 0.0883477 x^3 + 0.877893 x^2 - 3.57417 x + 7.5, where x is in hours. How can I access the PLC time (current hour and minute) so I can use them to calculate the set points? Does Unity Pro XL have pre-defined variables for these?
  2. Hello to all , I need to upload the program from an old Schneider Modicon 140 CPU 113 02 , there is no backup for the program in this PLC so its not possible to know what software was used for writing the program. Is it possible to upload the program from this PLC using Eco Structure Control Expert ?
  3. I want to establish Ethernet IP communication between the following PLC CPUs. Schneider Electric - BMEP582040 Honeywell - ControlEdge UOC CPU900-CP1. Where the Schneider must be master and Honeywell must ne adapter. Let me know if anyone have done this or can help me to do so.
  4. Hello, I am using Easymodbus library to Communicate with Modicon TM218 PLC. Reading and Writing of Holding Registers working fine. But coming to writing of single bit in data register i am facing Problem. Need to know how we find coil address of a data register. e.g I have to write bit 1 to MW70.1 address. How we do that. Right now i am reading complete MW70 Register and Manipulating it using bit manipulation techniques and again Writing using Write single Register Function. It's working but some times because of reading problem it writes some garbage values. At that time complete system effecting.    Please provide me any solution. Thanks in Advance. 
  5. Hello Everyone, I am writing one logic and need some help regarding that logic.   CURRENT LOGIC -  -There are two timers TON_1 and TON_2. -TON_1 timer will start as soon as PLC turns on. -After the done bit of TON_1 timer, the TON_2 timer goes on. -After the done bit of TON_2 timer, again the TON_1 timer will start. -This logic cycle will run continuously, both timers will run turn by turn. Code (Codesys/Schneider Eco Structure Machine Expert)- PROGRAM POU_1 VAR      TON_1: TON;     TON_2: TON; END_VAR TON_1(IN:=(NOT(TON_2.Q)) , PT:= T#100S); TON_2(IN:=(TON_1.Q) AND (NOT(TON_2.Q)) , PT:= T#20S);   Actual Requirement -  -There is a BOOL tag. -If the BOOL tag gets high during the TON_1 running, the logic should move to the TON_2 immediately. -If the BOOL tag does not get high during the TON_1 running, the logic should move to the TON_2 after completion of TON_1. -after the completion of TON_2, again restart TON_1. -Logic Runs continuously in a cyclic mode.   Give me your valuable idea to fulfill the logic requirement.
  6. Hello, I'd like to ask for a technical confirmation on using MODBUS TCP in a M340 + Fiber Converter Card (BMXNRP0200C) or Switch (ADAM 6521) + Fiber Optic patch cords and cable topology to communicate with a SCADA system. The main objective is to provide a fiber optic connection point inside a control panel because it is located in a area prone to electrical interference. The protocol to be used would be MODBUS TCP. We have two simple topologies in mind but we are not sure if they are feasible. So i'm asking for a little support about it. Considering the attached simplified topologies (Drawing1.jpg), am I able to use MODBUS TCP to communicate a M340 with a SCADA workstation with no problem? I'm not sure if the protocol allows this kind of change on the physical medium like if it was pure Ethernet.    
  7. Hi All I need software for ALU201L, it is an old Schneider plc Thanks
  8. Hi, Please help me to setup Schneider hmi and printer. And report printing.
  9. 1783-NATR Modbus TCP

    Has anyone successfully used a 1783-NATR for Modbus TCP communication between a ProSoft MNET card (in the ControlLogix rack) and a Modicon Quantum? ProSoft MNET:  10.x.y.z Modicon Quantum:  192.168.1.x There is one (1) ProSoft MNET and four (4) Modicon Quantum's. NOTE:  I know there are other devices that support this behavior...the NATR is the suggested standard hardware.  We are getting various responses from distribution and support.  ...I was hoping someone in the community could confirm.   Thanks for your time!  
  10. Dear All, TSX AEY414 was installed on a machine  and was working fine. suddenly module becomes faulty and its ERR LED tuned ON we replace the new same module and the new module was showing the same error we replace the 3rd new module , this worked for 8-12 hours fine. now the situation is that RUN LED is on of the module, but values on HMI display remains 0.0 can anyone help me please? waiting for reply Thanks  
  11. Hey! Whats up guys ;) I'm a student and I have been saving up money for PLC for quite a while now, I was recommended to use Schneider M221 TM221CE24R PLC. after buying it I looked online for some HMI and due to high price tag I ended up buying cheaper Kinco GL070E HMi for learning :D I'm trying to connect them both together using Ethernet cable but I'm having difficulties making them connected. The lights shows up ( blinking green ) and ( solid yellow ), I have tried Modbus TCP Slave, Schneider Ethernet (TCP Slave), M series, M200 Ethernet ( TCP Slave ), but nothing seems to be working :D  The best I got in 3 weeks of trail and error and countless non-english videos on youtube :D is error message on the HMI -> [2] PLC NO RESPONSE 0-01-03   I'm trying to learn and seems like I have hit a wall. Can anyone help me to see if it is even possible to connect them or do I need to save up for new HMI :( Any help would be greatly appreciated, sincerely Engelis :) 
  12. Hi there! I'm trying to communicate HMIS5T HMI with a Modicon Micro TSX3722001 PLC. The communication is OK, but whenever I try to enter some data into a numeric display I get an error that says "Method or function in Communications System unsupported" and data won't change on PLC's Animation Table. Also, if I modify a variable's value in PL7 Pro, the value in the HMI numeric display won't change properly. It displays the last digit of the binary format of the number (let's say I write a "3" on PL7 Pro, then I get a "1" on the numeric display, despite all data types being UINT, and all ranges are OK. Then if I write any number which binary version ends in 0, I get that 0 on the numeric display, nothing else. Again, all data types and ranges are OK). Changing variables' source on Vijeo Designer to Internal doesn't seem to work. So I'm wondering what else must I do in order to send and receive data from/to HMI and PLC?    Thanks in advance and I hope you can help me! Update: Got this solved. For anyone wondering, Vijeo Designer 6.2 SP8 it's kinda buggy with Unitelway communication. There's a hotfix that solves this problem, provided free by Schneider.
  13. Hello, I have an M2I Top RW (model: 1000WD) connected to a Schneider Modicon M221 PLC. The HMI is connected and I is working perfectly reading data from the PLC via ethernet. I can't seem to find a way to write to the PLC from the HMI. I would like to control the PLC from the HMI, I know this is possible with Fatek PLCs with the same HMI model. please help - how would I create a bit command from the HMI to the PLC? what registers? what inputs in the PLC? thanks
  14. Hi, I have a modicon premium plc rack with TSX PSY 3610 power supply module. The psy 3610 power supply has an alarm contact and it is used in a loop to energize a hard ware relay for 24VDC supply to the DO module FTA boards. There is a safety button in parallel to the alarm contact so that during startup we can press this button, energies DO module loops and all IO faults cleared and power supply alarm contact latches The problem is that this power supply alarm contact remains always open even when IO report no faults. The PLC has MAST task only and it is running with no faults. If I jumper the alarm contact all the IO's are healthy . tried changing the power supply and DO modules. no hope. please help.
  15. hi guys i am using my Schneider m221 plc  but facing this below problem. how can write modbus address  i am trying below register data address but not accept this register data  address example i write %MW0:=16#10001 %MW1:=16#10002 %MW2:=16#10003 %MW3:=16#10004 so guys how can write this register address can me  share one example so i understand. also share read var setting . ObjType: FristObj: Quantity: IndexData: Thanks
  16. Hello Everyone. We have Schneider TM241 PLC Along with Citect SCADA System at 100MWp Solar Power Plant to monitor and control various equipments like Inverters, Switch-Yard, MFMs, Weather Monitoring Systems etc... Government Authority here asked every solar plant to control the generation as per the instructions by Load Dispatch Center, for that we need to implement logic to control Generation as per requirement. For that we are controlling generation from inverters by giving them generation setpoints calculated by PLC using PID function.   But we are facing one problem while using PID. (FB_PID of Toolbox Library)   Suppose we need to generate only 60MW out of 100MW. So we set PID setpoint to 60MW and according to that we get PID output and according to that PID output value we provide generation setpoint to every inverters.   This system works very fine until the clouds comes into the picture.   Now suppose Setpoint of PID is 60MW and PV is also near about 60MW, and suddenly large cloud comes over plant and block solar radiation.   In this case generation comes down to 10MWp(or any value below 60MW), So output of PID will Increase and keep increasing and settle at the Maximum value. but without solar radiation generation value stays very down then Setpoint.   Now suddenly Cloud moves and again solar radiation increase, but the PID output is maximum at that time so, Suddenly Generation goes from 10MW to near about maximum capacity (100MW) instead of 60MW, and then it will slowly comes down to 60MW.   We need to rectify this generation shoot up when cloud moves. Anyone have idea how can we solve this problem or anyone have programmed PID in this kind of situation.   Is there any function block available to do this correctly like function block of PID with two Reference or something like that...   We are using TM241 which is CoDeSys based PLC.
  17. Hi there, Im having issues controlling ATV 320 VSDs over Modbus RTU with a M221 plc, does anyone have any pointers for me to look at? I believe I Have set everything up correctly but when I run the program on the plc the atv's just stay in 'NST' state I have included screenshots if they are any use   My speed reference in this example is taken from the memory word %MW0 which I am inputting via a HMI   I have addressed all my ATVs accordingly in there setting with the correct Modbus parameters and selected Modbus under the FR1 configuration, am I missing anything?? Any help is appreciated as I am really struggling   Tom
  18. hello expert i want ask some help So i tried to communicate my Omron PLC (cj2m cpu31) with SCADA from Schneider (power logic) on my omron side the comunnication on PLC already take to communication to NB so i add communication module CJ1W-SCU41-v1 I want asking how to open the communication if i want the scada become a master and my plc become slave i got this from omron website is that program compete for my case? i need configuration for scu41 module also to communicate or if you have suggestion i really open i just need to open port RS232c from scu41 so scada can read the data from my plc  tahnkyou for your help MRTU_CPU_Slave.zip
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  20. Hello guys, I am very new at this. I am trying to make a Schneider PLC (TM251MESE) to send some serial commands (485)  to a integrated stepper motor from Automation Direct (STR-MTRD-17030RE, but I am lost. The driver has been program to receive the SCL commands. But not quite sure how to send those from the plc. Im using SoMachine V 4.2 Have any of you done anything similar? Any example will be greatly appreciated.  Thanks 
  21. Hello, Do you know what is the difference between the PID controllers PIDFF, PID1 and PIDP1 in a Schneider PLC? I have to modify a PLC program with a new standard of coding. The new standard use a PIDFF function bloc. If I change a PID1 bloc for a PIDFF bloc, can I use the same parameters Kp, Ti, Td? If I change a PIDP1 for a PIDFF bloc, can I use the parameters Ki and Kd to calculating Ti (ti=1/Ki) and, Td (Td = Kd)? Thanks you for your help.
  22. Dear All, TM241CE40R is installed with firmware 4.0.3.18 If I buy new CPU with some other firmware, will it work or I will need to change the firmware?  
  23. Hello. I am having 22 slaves communicating to a master on rs485 half duplex.i have selected baud rate as 38400 on a length of 800m.The problem is out of 22 devices only six are communicating .i have checked wiring,inserted termination resistor but still not getting rest of the devices alive.is it that i have selected high baud rate on a long length?this is the only problem as i am seeing it.can somebody help me on this issue
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  25. Hello - we run a car wash that is controlled by a Modicon TSX Micro 3721001. It is indicating a CPU fault. I've attached a picture of the unit in place, with the LEDs lit. I have ordered a new base unit (2nd picture). I haven't tried it out yet, but it is tested working. I am hoping a base unit replacement will solve the problem, but wondering if it it possible the problem could be in the modules? I did not order those but now wondering if I should have... If the issue could be with the modules, is there a way to test which one it would be so I won't need to order all 4? If it coult be a module, I might order that now as I am in a rush to get back in service. Thanks for any guidance! Andy