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  1. Hallo, i want to connect PLC Omron CP1E to indicator weighing scale with modbusRTU connection and i have a CP1W-CIF11 module to connect indicator with CP1E. ,but I have no experience in RTU modbus communication in the PLC. How do i start?   *i just need output: 1. Coil (Reference No = 0. Output bits) for input switch with address 3 (Tare). 2.Input Status (Reference No = 1) for output lamp with address 17 (stable) 3.Input register (Reference No = 3) to read data with address 5 (gross weight) 4. holding register (Reference No = 4) to write comparison data with address 17(over) page 85 - 94 in attachment     ad4402_manual.pdf
  2. Hi guys, this is my first topic on this forum. I need an help with modbus communication through NX1P2+CIF12 and slaves inverter. I have never used this board, so i need an example to understand. Thanks
  3. 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!  
  4. Hi there, I am fairly new to programming serial communications, especially with Mitsubishi PLCs. Can someone walk me through in ladder logic how to bring in ASCII to the PLC, store the data in the data registers. Then send the data out to another PC once an 'X' input is satisfied? ASCII code would go like the following: C2,0,1,123,2,ABC,3,456,CR
  5. Hi I'm trying to set up Modbus RTU communication between FX3U PLC and a weigh module. I would use the ADPRW command using 0X03 to read the 16 bit Holding Register but in the weigh module the Data Address/Holding Register of the value I want to get is 400047 - 400048. How to translate the value in 16 bit?   Thanks, Fabio
  6. We have a customer insisting on communicating with our NX102-9000 over EtherCAT, we have explained multiple times that EtherCAT is not intended as a facility communication protocol and recommended that instead they use Ethernet/IP, but after a year of pushing back they are still insisting and willing to pay for the Engineering work to get this to happen. Has anyone successfully configured two EtherCAT masters to communicate with each other? In the past I have used the PN-PN Master Coupler from Siemens to get two ProfiNet Masters to communicate with each other so I am hopeful that a similar device exists for EtherCAT, but I have not had any luck searching the web for such a device. Does anyone have experience with or know of such a device? Thank you!!
  7. Hi,   we have a Mitsubishi PLC Fx3U-128MT and a A&D weighing module AD 4212L. The weighing module supports MODBUS RTU communication via RS-485. We are looking for the most affordable and simpler way to establish communication between PLC and weighing module. At pag 20 of the manual " MODBUS Serial Communication Edition " https://dl.mitsubishielectric.com/dl/fa/document/manual/plc_fx/jy997d26201/jy997d26201g.pdf there are three options of communication equipment. According to your experience, what specific interfaces do you suggest us to invest in? Thanks    
  8. 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
  9. Hello everybody, i have some uncertainties going through my head. i am fairly new in PLC word, graduated last year, last 12 month i did project on Siemens PLCs, but now i have to expand my view with Mitsubishi. 1. i am working on project with several conveyors. for each conveyor type i have FB fairly similar to my FB in siemens. For all conveyor i am using same sdt containing 32 bits. So a have array[0..20]  of said sdt. But in fb i was not able to copy item from array, through input var containing index of that item to vocal variable, which i wanted to write back to the array at the end of fb. I tried different approach ->  using item from array *** input/output.  When monitoring item from array i can see, that variables i change in got2000 panel are in fact changing. But when i monitor fb itself, those same variables are not changing. i reworked this fb several times, for example when i found out that FB variables FB FXcpu cannot be set as retain so i would like to use it and i see no other way than make this fb work. :D 2. Is there possibility to us FB in another FB? I remember that i read some restriction about this, but now, i cannot find it. Thank you everybody for your responses    
  10. 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. 
  11. 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.  
  12. 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
  13. Hello from korea :)   actually i am new to company which i do freelancer job and i am not used to dealing machine with sysmac studio its hard to make things perfect...   its just simple thing move servo motor.. you can check my situation more closer if u see the picture that i uploaded   i think control servo motor By function named MC_MoveAbsolute4(Axis,execute, parameters......) i just use that function by put them in while loop so that i can check the move of motor but nothing happen lol   What can i do!
  14. 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
  15. 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
  16. 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.
  17. Thesis idea

    Hi guys!   Actually, I am student. I need to choose a thesis topic soon. I would like to write something which is connected with automation. I wolud like to ask your help, to figuring out an idea, what can be a good topic in nowdays. It would be a master degree already. Im using AB PLC-s, so it would be convinent if someone could suggest for me what I can solve with this, enviroment (rs logix 5000, studio 5000) Im not asking a solved thing. I would like to ask some ideas or tip. If anyone have some idea, pls share it thanks.  Thanks in advance.
  18. 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
  19. 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
  20. RSLogix5000 Transfer function Bumpless transfer between two inputs. If criteria or FLAG is true, then transfer from input-1 to input-2 at a prescribed ramp rate, and then release the output to match the selected input without rate restrictions.  Issue: The issue is that upon the status of particular input (FLAG), the control valve demand jumps from 0 to whatever the output of the PID’s Low Select value is (maybe 50% or 80% or other). Request: Ideally, I would like to mimic or replicate the Transfer algorithms provided in other control systems, as described below . The TRANSFER algorithm performs a transfer between the two inputs.  The output is equal to the IN2 input if the digital input FLAG is TRUE, and the IN1 input if the digital input FLAG is FALSE.  The algorithm automatically performs a bumpless transfer between the track input and the selected input when a tracking request is removed.  The algorithm ramps to the selected input (IN1 or IN2) at the specified track ramp rate (TRR1 or TRR2).  Internal tracking may be selected to allow a bumpless transfer between IN1 and the IN2 inputs.  Individual track ramp rates may be initialized to ramp from the IN1 to the IN2 and from the IN2 to the IN1. Attached is RSLogix5000 program "transfer.acd" Thanks.
  21. 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
  22. 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.❤️  
  23. Is there a way to clear a CPU fault on power up without having to connect to software?
  24. Hello, I am new to automation and I do a project with a Micro850 Plc. I am more comfortable with logic block so I write my program in Function Block langage on Connected Component Workbench software version 12. I would like to make flashing a light but I don't know wich block to use and how to program it ... Could you help me. Thank you
  25. Hello, In past i was using Siemens S7 300 and Simatic 5.3. So a long time ago. I restart look back to plc because i need to monitor the temperature of my heating system. So bought a plc that is a IEC61131-3 standard and  OpenPCS as Develop software.  So i begin to play with OpenPCS because  Im very rusty.  SO i create a function, that i named FC_TEST . When i compile the below code i get an error E: S5004: Function blocks instances are invalid in 'FUNCTION'-POUs, STRUCTs, and in ARRAYs.  It seams that Timer block inside the function FC_TEST are not allowed, i understood right ? (*  --------- DECLARATION  ---------  *) VAR_INPUT T_1 : TIME ; (*Declare T_1 as a Time Input ==> Set the Time of Timer *) START : BOOL; (*Declare START ad BOOL Input ==> Start The Time of the TIMER *) END_VAR VAR MY_TON : TON; (*Instantiate MY_TON as Timer type TON*)  END_VAR (*  --------- FC PROGRAM  ---------  *) MY_TON(IN := START , PT := T_1 ); FC_TEST := MY_TON.Q;   (*  --------- CALL THE FC---------  *) tmp2 := FC_TEST(T#2s, I0_0);  (* I0_0 is a input*) Thanks  Marco