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  1. Hello,   Any one  have idea how to read and write variable for Schneider tm221 plc with Modbus function codes 3,6,16. I attached file for power supply communicator with registers, I need to adjust power supply from 25% up to 100. Please need help. Best regards,   Chyngyz   Modbus OPERATING INSTRUCTIONS.pdf
  2. Hi all, I'm having an issue with EcoStructure Control Expert where when using DTM browser I try to connect but I get a message "No Ethernet/IP device at specified address...." My issue is that I had a device communicating using modbus but it has stopped and I cannot diagnosis the issue. I can ping the address and run a modbus poll from a PC on the network and everything performs correctly. Any help would be greatly appreciated. 
  3. SLC 5/03 rs232 connection problem

    I have an SLC 5/03 that Im trying to get the program from. I have a 1747-uic. Im not getting anything to show up in rslinx and I suspect the channel 0 is configured for ASCII because theres an HMI plugged into it. Also the rj45 connection is broken because someone used a crossover ethernet cable...lol. is my best bet to try and fix/replace the 1747-uic? I have an offline copy of a program from a different machine that uses a 'similar' setup and the CH.0 -System is configured for DF1 full duplex,19200,CRC and CH.0 - user is ASCII 19200 baud. Any Ideas? I was using the 3 wire db9 connector running from the HMI to the PLC. I unplugged it from the HMI and used it with the 1747, Should I use a standard DB9 cable with a null modem adapter?
  4. Need help in table scrolling

    Hi all, We have a DOP 107CV HMI we interface this HMI with microcontroller through RS485 Modbus protocol. I'm new to HMI and PLC's although we are successful in interfacing HMI with Controller(Communication Established successfully) We made a table in HMI and allotted some registers to Modbus address and data is transferred from controller to HMI up to this we are good in communicating Since the table created is static and we cannot scroll down from that table so, to overcome this problem we found History buffer and made PLC trigger and allotted address. In that History Buffer we created 7 rows and the data is sample whenever we triggered the PLC in that case scrolling is working fine, but the problem we are facing is whenever we update 3 rows out of 7 and triggered the PLC only 3 samples are updated in first column and in the next step we updated the other 4 rows and triggered the PLC the data is sampled on next column but we required it to be sample on first column instead of second.  
  5. Delta plc Communication Issue

    Dear allI have DVP14SS211R series Delta PLC Which is having 24V DC supply voltage. I am using PLC as master and My end device as slave. My slave device set device_iD=1I am using Modbus RTU protocol for Function code1baud rate =9600parity =noneStop bit=1data length=8I would like to know how to send request with Function code 1(Read coil Register). i have attached code reference. Communication block it wont give error it shows 0 .means No error
  6. modbus rs232 communication error

    hi I am traying to connect 10 plc's FX3U to a scada system, on the plc's there are a rs232db and FX3U-232ADP-MB cards. i have devices transmit the rs232 by lan or any thing I need (rut955) my problem is when i download the program on plc same times the communication go right , but if i powering pls off then on the communication fail down. I initialized the plc  like photo https://drive.google.com/file/d/1Tr367wfVCRG6vvKcsOFyTKG_FExAsnVy/view can any one help me? sorry for my English
  7. CJ1M+ETN21 Modbus TCP

    Hello. I'm trying to use Omron ETN21 as master for ModbusTCP protocol. I can communicate with 1 SLAVE UNIT (standard modbusTCP slave) using FB MTCP_ETN_Client.zip  from https://www.myomron.com/index.php?action=kb&article=1245. It works perfectly. But I have three SLAVE UNITS to communicate to. I'm trying to do this using [524]Modbus_TCP_FB.zip sample. I have copied SECTION1 to SECTION2 and changed IP number and SOCKET number. But this doesn't work. I would realy appriciate a working sample where OMRON PLC is MASTER for THREE (or more) SLAVES. I'm attaching code file... Thanks. Best regards, Andrej. Modbus_TCP_FB.cxp Modbus_TCP_FB.opt
  8. Hello out there   I've searched for quite some time but unable to find any information helping me through this. I got a Omron PLC NX1P2 where im supposed to setup modbus communication over TCP/IP but so far i've only been able to find information regarding RTU setup. But seen forums mention its possible to setup via TCP/IP Anybody who can help. A program sample would be helpfull aswell. Im a trainee as automationengineer and this is my first encounter with Omron PLC and Modbus so quite new to the field.   kind regards Ivan T.
  9. I am currently trying to connect my OMRON NX1P2 1040DT1 (Using CIF-105) to my Unitronics V570 PLC, With my OMRON PLC as Master. It seems as if Unitonics Rs485 only wants a six-wire connection type but my OMRON PLC wants a 2-wire or 4-wire connection, Wondering if anyone has a solution to my problem and can assist me.  
  10. Hello, I'm trying to connect a CJ1M-ETN21 as slave Modbus TCP with a Modbus/Dali Gateway. I download from Omron website some FB with ones should be possible.   https://www.myomron.com/index.php?action=kb&article=1245 The FB only can be used with the direction unit 0, but we can change some directions inside the FB and can be adjusted to other units. In the download I found this FB: MTCP_ETN_Connect, MTCP_ETN_Fn01, MTCP_ETN_Fn02, MTCP_ETN_Fn03 .... Supposed with connect we can establish the connection with the master, but the FB never make nothing. Should I make some special configurations to use this FB? I appreciate any help. Thanks
  11. Hello All,   Semi-noob here with Mitsubishi PLCs. I'm starting a project in which we are upgrading an existing A Series PLC with the Q.  Is there a datasheet somewhere that lists compatible software within Mitsubishi's lineup? I had no luck in searching their site.   Also, (in the same project) the existing network uses DeviceNet. I have the Q series compatible card for that - but within what software does one configure the network?   Thank you.
  12. Hello All,    I have had no luck sorting through Pilz datasheets on this CPU to find cable / software to connect/upload the program. Any insight?   We are upgrading this to the CPU 4000 series - it will use DeviceNet. Will this node number / memory allocation be setup within the 'PSS 4000 Firmware' software? Where do I find a guide for this?   Thank you.
  13. Indusoft Web Studio

    i am using indusoft web studio for the modbus logging. program runs successfully but after a half day or a day it shows error " error initializing the driver modbu 10.10: invalid serial port "any suggestion will be appreciated.RegardsZubair Ahmed
  14. Modbus with CJ1W SCU31-V1

    Hi every one, I want communication Inverter mitsubishi D700 with module CJ1W SCU31-V1,  any one give me a correct solution and send any sample program. Thanks
  15. I'm trying to communicate with INVT PLC and DGM8002(grain moisture analyzer) via mobus RTU.   Can anyone explain about these Modbus address ? Please kindly see in picture . example working mode address K0 (0-stop ,1-manual,  2-Auto) Actual Moisture Address K6 What is meaning of K0,K1,K3,K6.  https://drive.google.com/file/d/1-mGzpEvw4UlewWhR9k3wOd1mO-uhsklL/view?usp=drivesdk Is that K0= 0000 K2 = 2000. K3=3000 ? Any suggestion please. I'm really appreciated your comments.❤️  
  16. - i'm from VietNam, Who can help me?? - I cannot communicate the RFID card reader with the FX3U PLC using the FX3U-485ADP-MB module; - register error D8438 = 3821; D8423 = 1025; D8422 = 212. - Here is the connection picture and my PLC code thanks !!!!
  17. Has anyone interfaced an SR1000 (or similar keyence barcode reader) with a (Automation Direct) Click PLC?  I am looking to read/write rs232 so I can get the string back from the barcode reader, instead of actually teaching it or using banking (banking is a bit cumbersome with the keyence, plus it'd take me a long time to actually get the labels I need to teach the camera all).  I had started messing around with the application, but I have no way of seeing if the camera or plc is actually reading/writing the data.    Data is all ascii.   Thanks,
  18. Q03UDVCPU Modbus Setup

    Hi Guys, I need help to set up modbus tcp/ip parameter for Q03UDVCPU, i want to use the predifined protocol and built in ethernet port. do you guys have some usefull references how to setup modbus tcp/ip, or is there any example program from mitsubishi? Thanks
  19. Dear Engineerds,   My Master (non siemens) doesn't see the Holding Registers of the Slave (S7-1200) plc. However the Q coils are fine and all Diagnostics don't show errors. The Hardware: S7-1200 – CPU 1215C CM PtP – CB1241 RS485 (6ES7 241-1CH30-1XB0) - Half Duplex RS584   Firmware: Modbus_Comm_Load (V3.1) Modbus_Slave (V4.0)   I've tried with various DB, UDTs and manipulating HR_Start_offset parameter with no success. Could you advise what am I possibly missing? Modbus_Comm_Load_DB_Snapshot.xlsx Modbus_Slave_DB_Snapshot.xlsx
  20. Greetings everyone. I'm new here. Hoping to get help to operate the Omron V400-R2 barcode to the Mitsubishi QJ71C24N so that they can communicate the two devices with the correct method. PLC: Mitsubishi: Q03UDVCPU; barcode: Omron V400-R2; serial communication module: QJ71C24N. I use RS 232 communication cable, I have tried using predefined protocol and non protocol procedures but still can't communicate the two devices. I really appreciate your help.
  21. I need a Red Lion HMI to communicate with an IO module (8) IO's ... I don't really need a PLC.  Because the control of a certain LinMot drive for a linear motor can be activated by IO's.  This LinMot drive can store up to 100 curves... which can simply be called into operation by a single binary number between 0 & 255,  defined by eight IO's ..  you input the number on the HMI, the HMI converts to binary and set the (8) IO's in the module which sends the binary number to the LinMot drive..   Yes, there are some other IO's for starting and stopping ... and it may be unrealistic for me to not use a PLC.   I'm trying to get the cost way down...    If a "stand-alone" IO module does not exist... then is there a simple, low budget PLC out there, with 8 or 16 IO's available..?    Thanks much, Michael
  22. From DM:   Hi; my name is Metin , I live in turkey. unfortunately I have a problem that I could not reach a conclusion here. I hope you can help. I need to communicate with CJ1W-ETN21 with a device via modbus tcp and read information. I downloaded ready-made protocols on omron site, connection is established but I cannot read. I tried the attached protocols. the device I am trying to communicate with :  https://www.gmweighing.com/products/weighing-indicator-m02  I will get the weight information from the weighing device. Thank you in advance for your help. MTCP_ETN_Client.zip
  23. 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
  24. Hi everyone I'm new bie, I try to control VDF-M via fx1n-485-db. please help!! Thanks.
  25. Hi everyone I'm new bie, I try to control VDF-M via fx1n-485-db. please help!! Thanks.