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  1. Hello,  I have to communicate Trane chiller to CJ2M-CPU34 with CJ1W-SCU31-V1 module via Modbus RTU RS-485. Do you know the best way to do this? Any advices? I attach Modbus registry from slave device.
  2. I need help regarding setting up modbus communication between Allen bradley micrologix 1400 and Schneider altivar312 vfd and rslinx for pc. I am totally stuck with it. 
  3. Mitsubishi iQ-R Series

    Hi Has anyone got any real life experience with the new Mitsubishi iQ-R series?  I have been assigned a major capital project to replace our old ageing DCS system.  Our current PLC backbone is about 40x Q2ASHCPU, 10x Q06UDEHCPU and about 2xA2SCPU all linked up via Melsecnet/10 network with communication links into the DCS system via Modbus RTU utilising the QJ71MB91 modbus card. Due to the nature of my companies process and the limitations on plant downtime it is estimated this project could take up to 5 years to complete, with this in mind I am wanting to install a system that will not be obsolete (or unsupported) in a few years, hence, I am very interested in the new iQ-R series with it being Mitsubishi's latest and greatest.  However, recent communications with my local Mitsi rep is not filling me with confidence that the iQ-R series is not as well supported/developed as the Q series.  A major requirement during the development stages of this project is the new ability of the new processors to be able to talk to the old DCS up until a point where the DCS nodes will be completed removed and replaced with a modern SCADA package.  Hence, the requirement of a Modbus Slave card for the iQ-R (i.e. a QJ71MB91 equivalent) which I am told is in development, but has no fixed timescales.  Previous experience with Mitsubishi developments of cards is normally years not months. Any information anyone can provide on their experience of the iQ-R series would be greatly appreciated and if anyone knows if a Modbus Slave card is in development that would be useful.  I realise i could utilise the Q series extension rack with a iQ-R processor but this is not the route i want to go down. Thanks for any help and apologises for the war and peace. Cheers Matt
  4. delta hmi communication speed

    Hello, i have DOP-07s411 delta hmi and i want to interface it with microcontroller using modbus (RTU) protocol over RS485( 8 bit data,1 stop bit, parity none,19200 baud rate). i have good speed of communication if i do not use macros. But as i place background macro(background macro is only 4 lines ) it slow down and  updates the display at every 3 seconds. i cant able to figure out what is the problem. I want to update display of  HMI very fast.Please help me to troubleshoot the problem.
  5. Hello  I try to connect my load cell via RS232 serial port 2 to PLC (PC1L-EM) but it dose not work could you please let me know what is my mistake  Thanks in advance Ebby Untitled.cxp
  6. Hi,  I'm trying to test the serial communications with my Micro820. I acquired a 2080-SERIALISOL so I could have "someone" to talk to. I want to use RS485, so I figured that I'd have to connect: Modbus pin 1 (D+) to serialisol pin A1 (+485) Modbus pin 2 (D-) to serialisol pin B4 (-485) Modbus pin 3 (GND) to serialisol pin A2 (GND) Now when it comes to CCW, the thing gets a little harder. I know I need to use the MSG_MODBUS block (in fact I need 2, one for the modbus and another one for the serialisol), and I guess I specify the interface I'm using on the TargetCfg field (data type MODBUSTARPARA). But how do I figure out that the Addr (UDINT) and Node (USINT) values are for my Modbus and Serialisol? Or am I doing it wrong? Does anybody know of any place where I can get some more guidance or even a funcional ladder program? Thank you in advance
  7. Dear All   Sorry for my English I have Siemens CM1241 (picture attach) and need to communicate with Intellisys XE 90 via Modbus RTU, period. The problem is, form XE 90 the connector is Phoenix Contact 2-Position Screw Plug Connectors MC 1,5/ 2-ST-3,81 1803578,or in other word, only 2 contacts form P9 COM1 = L1 , L2 (picture attach). How we connect it to DB9 Female in CM1241? What signal go to what Pin? How about the Ground? Do I need Resistor?   Thanks for all your supports   Best Regards
  8. RTU Modbus CJ2M CPU34, SCU31-V1,

    Hello everyone. In my project I have to communicate Omron CJ2M-CPU34 PLC with TRANE chiller via Modbus RTU protocol. Unfortunately, I never use this protocol and I have no idea where should I start. I'm looking for examples and advices. If someone has experience in this topic please help me. I attach TRANE chiller documentation. Especially I want to use function 5,6 and 4.  CGAX-CXAX_Protocole_Datalists.xlsx CG-SVU007C-GB_0915.pdf
  9. FX3U-485ADP-MB

    Hi! I have some concern dealing with the FX3U-485ADP-MB device which will be plan to install and a total of 17 modbus devices(Chinese brand converter 4-20mA to RS485) where going to communicate. I'm new to this feature of FX3U family and I'm using GxWorks2. Is there anyone that can guide me through this device/development? Is there a program block for this like the one I have been use for analog modules(FX3U-4AD)? Looking forward to your help!   Thanks a lot! Marky
  10. I am trying to export the Modbus points lists from a DAServer in Archestra SMC but I am getting an error message shown in the attached image. All options are greyed out and I cannot export the points list from the PLC node. I know there are points configured on the PLC node because data is updating the the InTouch application. Any help you can provide is greatly appreciated!
  11. 8_decimal Data Displays as only 4_Decimals !

    I am Facing Problem Getting Kwh Readings From My Satec MFM(PM130-PLUS), Required for an easy & reliable Monitoring On Energy Consumption . Connected via RTU Slave Interface with SCADA User Interface (GE_Cimplicity). Here's what happening : Actual Kwh Reading has 8_decimal data digits on MFM LED Display but on Cimplicity SCADA User Interface Screen It only able to Display it as 4_Decimals point digit, eg, 63290058 kwh shows as 0058 , and 15299999 kwh shows as 9999 , and then 15300001 kwh shows as 0001 i.e 1 only! Plz Do a Rply , your slight approach to my Query Will be highly Appreciated!! :)  
  12. GE PLC PCM

    The topic is based on "How to configure a PCM module in GE PLC". One new query in PCM. To configure this PCM Module some procedure is to be followed in CMD prompt. Initially once ''READY'' line displayed. Query to this topic is if ''READY'' line repeats below persistently in CMD prompt, then solution is ______???? 
  13.    Have 10 POE Analog Input Modules available on clearance  10/20-channel Voltage Input, Current Input, & Analog Input Module with High Voltage Protection PoE Module, communicable over Modbus TCP and Modbus UDP    Model Number PET-7017-10     Regular price $459.00/EA    Clearance price $344.25/EA   only good on clearance quantity only.   http://www.icpdas-usa.com/pet_7017_10.html      
  14. Hi, I have just purchased a FX-ENET-P502 for my FX3GE and need a little assistance to get started. I have trawled the WWW to find configuration, connection details, message structure or any other tutorials and clues. I would be grateful for direction to any material to help get started. Thank you
  15. CJ2M Modbus communication

    Hello everyone, in my project I have to connect CJ2M-CPU34 with CJ1W-SCU31-V1 module to external device (see technical specifications in attachment). The CJ2M should read and write a few values from the external device. Unfortunately, I dont have a chance to try this communication before, just during system start. I never make any project on Modbus. Anyone can send me a program to communicate with this device, according to documentation in attachment?   38RBS_Modbus_1.pdf Modbus_2.pdf
  16. Simon was a game that I remember well when I was younger. This simple game can teach us how to program sequencers and look for inputs in a correct order. I believe that this can be a great leaning problem for PLC’s and HMI’s. You can learn about bit manipulation and sequencers in the PLC. HMI timing and control is also shown because of the time to play sounds and update to the next random set of lights.   Here is part of the post …   Building a PLC Program That You Can Be Proud Of – Part 5   Simon is a memory game introduced in 1978. It has four coloured buttons, each producing a particular tone when it is pressed or activated by the device. A round in the game consists of the device lighting up one or more buttons in a random order, after which the player must reproduce that order by pressing the buttons. As the game progresses, the number of buttons to be pressed increases. If the wrong button is hit the current game is over. Our game will have a high level score and a current level score.   We will be using AdvancedHMI to communicate Modbus TCP to the Automation Direct Do-More Designer Software Simulator.   YouTube Video of the game being played: https://www.youtube.com/watch?v=QrfnDHCeJjk   Note: The PLC and HMI programs are provided free of charge and are an excellent way to learn PLC / HMI programming.   Here is a quick review of the programming series so far. If you are new to the site, we recommend reviewing the other parts in the series first. In part 1 we looked at writing PLC programs to control a traffic light using discrete bits and then using timed sequencing using indirect addressing. Part 2 used indirect addressing for inputs as well as output to control the sequence of pneumatic (air) cylinders in the program. Part 3 and 4 we returned to the traffic light application and expand our program significantly. We looked at the sequence of operation using Input, output and mask tables.   The first thing that we will do is look at the HMI programming. Please refer to the following post for information on setting up and using AdvancedHMI software. Create a PLC with HMI Training and Learning Environment Free Read the rest of the post…. Happy Holidays,   Garry www.accautomation.ca  
  17. View File Modbus Master/Client for HMI/SCADA  Overview: The Modbus Master or Client provides an easy and reliable way to connect Modbus Ethernet or serial Protocol Compliant devices with applications, including HMI, SCADA, Historian, MES, ERP and countless custom applications. This driver supports all Schneider Electric (modicon) PLC’s and all other devices which use Modbus as a protocol. Open to support future models for this series of PLCs. Features Modbus/TCP Client or serial Master for communication with Modbus Slaves (Via standard PC serial ports, USB adapters; RTU and ASCII encapsulation in TCP/IP as well as Modbus TCP) Supports all Schneider Electric (Modicon) PLC’s or any other device which use any flavor of Modbus. Supports DANIELS/ENRON Modbus extensions. Can read up to 128 Words of Input / Holding registers or 2000 Bits of Discrete Coils / Input coils in one transaction. Performance –500mhz Pentium–10 words: 15msecs–100 words: 35msecs (avg) Full implementation of Class 0 and Class 1 Modbus functions as well as a subset of the most commonly used Class 2 functions This driver can be conviniently used with Visual Studio in development of complete large scale complex HMI/SCADA Systems. It can be used to perform advanced reporting MES, analytics, IoT, Big data type apps. One example is available to download here For More Info Overview of Parijat Drivers: Click here  Additional supporting Info about Parijat Drivers: Click here Complete Related Driver options: Click here     Submitter Scadadoctor Submitted 03/10/16 Category Other PLC Demo Software
  18. You can buy books programming Modbus TCP / IP with C# language on Google's Play Store Link: https://www.youtube.com/watch?v=gC2Y...OgG_veiieCTor6
  19. I'm designing a PLC system in which a Micrologix 1400 talks Modbus TCP/IP with three Modbus TCP-capable SCR controllers. I've never done Ethernet/Modbus TCP communication using the 1400, so I'm asking the following questions: 1. Can I connect the 1400 PLC and the three devices to an Ethernet switch and configure Modbus TCP communication from the devices to the PLC (data collection only) ? The switch will also be connected to the customer's DCS, receiving the data from the PLC and the three devices. 2. Can I connect the Ethernet port on the1400 PLC to the Ethernet switch directly, or do I need some kind of Ethernet interface, like the 1761-NET-ENI ? 3. The system also includes an HMI, connected to the 1400 PLC by RS-232 communication. Any issues with communicating with the HMI and doing Modbus at the same time? Your help in this matter would be highly appreciated. Thanks. Ron
  20. Modbus RTU

    Hi, I have LJ71C24 modbus module as a master and slave device with the RS-485 Half-Duplex (Modbus RTU). If someone could tell me what is the correct wiring and what are the correct parameters for such communication (Transmission control, do I use echo back parameter..???). Right now, I short-wired SDA-RDA (with A of slave) and SDB-RDB (with B of slave). Also, I am trying with the predefined protocol using Schneider Modbus protocol. Is this ok? Best regards
  21. Developed new software Modbus_TCP_communication. I. Modbus_TCP_Communication 1. Program Modbus_TCP_communication designed to exchange information between your Android smartphone and controllers PLC with Modbus/TCP. Information is exchanged through the computer and the router, wherein the router is connected via Wi-Fi network with your smartphone, and computer connected via interface Modbus/TCP with an PLC controller. The software has the following modes :  - modes read/write of words holding register (FC06);  - modes read/write of words input register(FC04);  - modes read/write bits coil(FC05);  - read the contents of the directory computer;  - reading contents of a text file of computer   etc. The program Modbus_TCP_Communication consists of 2 parts: - Modbus_TCP_Connection.apk - is implemented on the smartphone -   setting and monitoring of parameters and variables on the smartphone for   information from the controller; - Server_Send_Receive.exe - implemented the computer - server computer for sharing   information with a smartphone and a PLC controller according to the protocol   Modbus/TCP, computer is  Master for exchange of information,   a controller PLC is Slave 2. IMPORTANT !!!  The smartphone communicates with the router via Wi-Fi network. Wi-Fi router can be connected  to local or WAN networks. Obviously, the router must be properly configured  by the system administrator. It is also obvious that the device and the router must belong to  the same Wi-Fi network.   3. Work application Server_Send_Receive.exe tested on computers    running the operating systems Windows XP and Windows 7.    Work application Modbus_TCP_Connection.apk tested on Samsung and Philips smartphone    running the operating system Android 5.0, Android 6.0. It is better to use a smartphone    with a diagonal of 5 inches and above. There are examples of this program for the  control system of cold rolling of tubes mills is implemented in India and Ukraine, where the applied controller  PLC is MP2300S (Yaskawa). 4. App Modbus_TCP _Communication - paid, the cost per user is$ 5 USA.    Distributed through Google Play.    App Modbus_TCP_Connection.apk must be installed in the internal memory of the smartphone -    not in SD card !!! 5 Modbus_TCP_communication has a detailed guide in Russian and English languages.   The address to download the full description - https://yadi.sk/d/dQ1fxOgnwh68u   Read the description for purchasing the app !!!   Address to download Server_Send_Receive.exe formed   on the screen Modbus_TCP_Connection.apk;   IMPORTANT !!!: on your computer must be installed the driver for Modbus/TCP, designed   company OMRON. Link to download it is formed on the screen Modbus_TCP_Connection.apk, when   entering the program !!! Log on to this website (for download driver)  can only registered users OMRON.   The path for downloading on the website OMRON - Sofware Downloads - CX-Supervisor - Modbus TCP driver.      Enjoj.   Copyright Dr.-eng. Alexandr Ryss. Moscow. 2016.   ab.ryss@yandex.ru      
  22. Hi all, I am trying to control and/or read values from Schneider Altivar12 VFDs. Via Modbus on a AB Micro850 PLC (using the Connected Components Workbench Software). There seems to be two ways to do this with the Micro850, either with messaging (using the msg_modbus instruction function block) or with the Modbus mapping feature. I have a list of the communication parameters (see attached fileATV12_Communication_parameters_BBV51917_1.4IE05b.xls ATV32 Communication parameters_a1.2ie03.xls) But I haven't had any experience with Modbus and I am not having any success. There is not very much documentation about how to do this, If anyone can help me who has done this or knows how to do it I would appreciate it.  
  23. Hello everyone! I need your help.  I use the PLC: Q06UDEHCPU and the module: QJ71MB91. I programmed in the program GX Works 2 I instaled a library of "QJMB91ModbusSerial_V120 (FB - QJMB91ModbusSerialMaster)" and using it wrote temperature sensor interrogation program. The sensor is interrogated by the channel 2 and has the following switch settings:  Switch 1 - 0000; Switch 2 - 0000; Switch 3 - 0000; Switch 4 - 0A04; Switch 5 - 0000; which are specified by the PLC parameter in GX Works 2. I found an example of writing a program to install the switch settings in the user manual QJ71MB91 using ZP.UINIT instructions. I wrote a program to this exemple. Not prescribed bit address, which should be established when the program is executed (M0) (ZP.UINIT  "U4"  D0  M0). I wrote: ZP.UINIT  "U4"  D0  .  After executing ZP.UINIT instruction PLC stops working, blinking error, settings module is not install. How can I write a program to configure the Switch Setting?
  24. Serial/Modbus communication

    Greetings, I have L02CPU and LJ71C24 (for serial comm) and they act as a master. For slave I have some energy analyzer device. Device has a Half-duplex RS-485 serial interface (Modbus RTU protocol). Master only needs to read some data from slave. My question is: What protocol should I use for mentioned communication (MC, Predefined, Nonprocedural, Bidirectional)? I saw that if I use Predefined protocol I can select in Predefined Protocol Library, under the Manufacturer, Schneider Electric - MODBUS - 03: RD holding Registers. Is this OK for my type of communication? I will try to do some testing between LJ71C24 and QJ71MB91 (who will act as a slave), this or next week, but it would be helpful if someone can tell me correct protocol for my type of communication? P.s. I am using GX Works 2. Best regards, Luka
  25. Dear All, At the moment, I have project with PLC Delta and HMI Proface. I design HMI GP2500 by GP-PRO/PBIII ( V7.0). I see in List Device PLC of Software  not support PLC Delta.  Can you tell me how do you connect or Software HMI Proface ( Gp2500) support PLC Delta ? Thanks you very much.