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  1. Hey guys,   I know this is a topic that has been discussed before, but I am having trouble finding exactly what I am looking for.. I want to know the most efficient way to record data from my PLC to an Excel file on my PC. I want this to be done without the use of the PLC's webserver.  Specifically I am trying to record vfd speed every 10seconds with a time and date stamp. How can I do this?   Thanks, James  
  2. Hi all, New to the forum. I've been pretty much able to do the things I wanted with Beckhoff, but now I'm finally running into a problem I can't seem to solve alone. I'm trying to set-up Modbus RTU RS485 communication in Twincat3, using an EL6021. I've implemented a sample program from the Beckhoff website, but can't get it to work. I've got the feeling I need to properly set up the EL6021 but most information on the Beckhoff website is about the KL-series IO. Does anybody have experience with this? The strange thing is that, when I enable the function to read some slave's registers, BUSY is set and remains set. No timeout is triggered. I don't have a slave connected yet but I would at least expect to see something on the output of the terminal, and then a timeout. I've bridged TxD+ and RxD+, and TxD- and RxD- and set 8000:06 of the EL6021 TRUE, half duplex mode enabled). A scope connected to TxD+ and TxD- shows nothing. Code added below. I've added a GVL called 'Variable_Configuration' with the following: VAR_CONFIG     Main.MB.InData AT %IB0 : MB_KL6inData5B;     Main.MB.OutData AT %QB0 : MB_KL6outData5B; END_VAR And then the MAIN: PROGRAM MAIN VAR     bIoSyncMaster AT %I* : BOOL;     MB : ModbusRTUmaster_KL6x5B;     MBLedDriver : ARRAY[1..10] OF WORD;     tmpExecute : BOOL;     bError : BOOL;     bBusy : BOOL;     iErrorId: MODBUS_ERRORS;     iNoDatByteRead: UINT;     count: INT;     freebyte: INT;     TxError: INT;     TxBlocked: BOOL; END_VAR MB(     UnitID:= 41,     Quantity:= 4,     MBAddr:= 16#0020,     cbLength:= SIZEOF(MBLedDriver),     pMemoryAddr:= ADR(MBLedDriver),     Execute:= tmpExecute,     Timeout:= T#5S ,     BUSY=> bBusy,     Error=> bError,     ErrorId=> iErrorId,     cbRead=> iNoDatByteRead);      MB.ReadRegs(); count := MB.MBMaster.com.Buffer.Tx.count; freebyte := MB.MBMaster.com.Buffer.Tx.FreeByte; TxError := MB.MBMaster.com.Buffer.Tx.Error; TxBlocked := MB.MBMaster.com.Buffer.Tx.Blocked; tmpExecute:=FALSE;    

  3. RS485 with CX7080

    dai041099 posted a topic in GE

    Hello i'm newbie. I have a problem with RS485 on CX7080. Busy always True and data=0. I don't know the reason. Please help me! Thank you!
  4. Hi everyone, I'm new here. Thank you all in advance for the help you can give me. I have one machine with PLC Omron NJ101-9000, and this is Server in the Modbus communication. In the attachments, you can find the function block I used to communicate with 1 client. This work OK and I don't have problems, but I need to communicate with 2 clients at the same time. This block only admits one connection at a time. How I can connect 2 at a time? If I create 2 of these blocks, does each client need to connect to a different port? Do I need "open" this port in PLC configuration?   Thanks!

  5. Mobus RTU through NZ2FT-c24

    ASE posted a topic in Mitsubishi

    Hardware IQ-F connected via Modbus TCP on the NZ2FT-MT works Fine with normal IO. Now i want to run the NZ2FT-C24 with an modbus RTU protocol, i'm planning to make this. Anyone having an example for the NZ2FT-C24, what can help me?

  6. Mobus RTU through NZ2FT-c24

    ASE posted a topic in Mitsubishi

    Hardware IQ-F connected via Modbus TCP on the NZ2FT-MT works Fine with normal IO. Now i want to run the NZ2FT-C24 with an modbus RTU protocol, i'm planning to make this. Anyone having an example for the NZ2FT-C24, what can help me?
  7. I am working on something different. I have a Signal Speaker that uses binary inputs to play a certain song based on source configuration. I have to send 24v to the inputs of the speaker. I have 5 of them with 30 different configurations. I am currently trying to do this in ladder logic, RSLogix 5000. Steps done. 1. Assigned the 6 outputs tag names. This is so that I can shift the program to other machines if I have to and I just need to change the slot location, or if I have an output go bad I can move it with ease. This works. 2. I  created the 30 lines of  5 columns to match the binary method. This works.    a. I can manually toggle the output to cycle thru the binary table. 3. Currently working on the logic that when a particular alarm is activated... I turn on the outputs needed to match the binary table. The problem is destructive bit reference on the coils.  I was researching some but don't know what direction to go. How can I call the same output on different rungs? I have attached the .L5X to show what I have programmed. 4. I know the first rungs are wrong. That is what I am trying to fix. 5. Would there be a better way to address this, if so how? Any help would be greatly appreciated.     Speaker_Alarm.L5X Speaker_Alarm.L5X
  8. Hi. I have this project where we read out data from temp sensors and vaccuum stuff. We use Pfeiffer vaccum cpt 200 for the vaccuum, and we create a frame to send to the modbus unit to pull a value from example '306'. With all the current items we pull data, all the values are only updated every 5 seconds, is there a way to perhaps pull several frame/addresses in one request per device? Current codes we read, some are in sequence of each others, but more has a bit of gap like 00, 02, 306, 307, 398, 330 and so on.    
  9. I am trying to create a simple `Hello World` Modbus TCP/IP program using Twincat3 and virtual PLC (PLC running locally on my computer).   I have set up a LabVIEW Modbus TCP/IP master + slave program (both of which are working see screenshots below).  I can send data between LabVIEW's master and slave programs. And also read the data from Python script (so I know for sure they are all working).  Now I have tried to create a Twincat3 program to set some registers using Beckhoff example What I have tried:  - I have tried changing the ipAddr parameter to: 'localhost', '192.168.88.1', '192.168.88.126'  - Also I have tried the nUnitID set to: 0, 1, 16#FF (16#FF as specified by Beckhoff docs) This is my Beckhoff code:     PROGRAM MAIN     VAR         ipAddr         : STRING(15) := '192.168.88.1'; //Tried also 192.168.88.126 and 192.168.88.1 'localhost'         M0 AT %MB0     : ARRAY [0..3] OF WORD;         nValue         : ARRAY [0..3] OF WORD;         fbWriteRegs : FB_MBWriteRegs;         bWriteRegs     : BOOL;     END_VAR           IF NOT bWriteRegs THEN         nValue[0]                := nValue[0]+1;         nValue[1]                := nValue[1]+1;         nValue[2]                := nValue[2]+1;         nValue[3]                := nValue[3]+1;                  bWriteRegs                 := TRUE;                  fbWriteRegs.sIPAddr     := ipAddr;         fbWriteRegs.nTCPPort     := 502;         fbWriteRegs.nUnitID        := 16#FF;             //Tried setting this to 0,1 and it also and didnt work ...         fbWriteRegs.nQuantity     := 4;         fbWriteRegs.nMBAddr     := 16#3000;         //Tried: 16#3000, 0, 1         fbWriteRegs.cbLength     := SIZEOF(nValue);         fbWriteRegs.pSrcAddr     := ADR(nValue);         fbWriteRegs.tTimeout     := T#5S;         fbWriteRegs                (bExecute:=TRUE);     ELSE                  IF NOT fbWriteRegs.bBUSY THEN             bWriteRegs             :=FALSE;             fbWriteRegs            (bExecute:=FALSE);         END_IF                  fbWriteRegs                (bExecute:=FALSE);     END_IF  What should I change in my code in order to make this example work? Thank you in advance for any support!   Info about LabVIEW programs:  I am using the Modbus TCP Master / Slave examples  The IP address is set to localhost and the port to 502 (which should match the IP address in my Beckhoff code)  I am 100% sure it works because I have also tried connecting to this program via Python script. Picture of my LabVIEW programs:
  10. 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. 
  11. 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.
  12. 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.    

  13. How to enable modbus in mitsubishi plc

    Shubham Shende posted a topic in Mitsubishi

    hello there, I have Mitsubishi FX3G 24m PLc which has an ethernet port for communication port. how to enable Modbus TCP/IP for data collection of sensor values and sending it to a 3rd party. If this has been answered pls link to the thread.
  14. Hi, I have inserted new RTD module into in my SLC500 as replacement to defected RTD module however the module LED is enabled but the channel LED's are blinking. I have checked the following: In the advanced I/O configuration the module configuration is shown as expected In the data file word format it is not corresponding to the channel preferences What should I do and how to fix the word bits?        

  15. Open data log in HMI

    Robror posted a topic in Siemens

    Hi there! I have S7-1200 controller connected to a Comfort Panel. The machine has some pressure and temp sensors, as long as many valves and other stuff. I generate a daily datalog with some of those variables but, the thing is, I've been trying to figure out how to show these data in the HMI without using a trend viewer. I don't know if it's possible, but I want to be able to see what valves were open (for example) the day DD/MM/YYYY at HH:MM:SS, using the generated data log, kind of knowing the state of single bits at different past moments. I've been searching the web but I didn't find something exactly like this, don't know if I'm doing it properly so I'd like to know if you have done this or you can throw some light on the topic. Thanks in advance and hope you can help me!
  16. Hello, Has anyone got an Omron PLC NX1P2-1140DT1 running with Modbus TCP/IP? I tried to reach Schneider several times, but there is "live" or email to discuss or get help, has to go to thru someone from Mexico then he will email to France. All of my attempts was lost, I can establish a "CONNECTION" but I can't READ the Coil - I got the error "Gateway Path Unavailable" (that means  "Used alongside gateways. Basically, this code means the gateway couldn’t allocate an internal path to process the request. Therefore, the gateway could probably be misconfigured or overloaded") My program is based on the MTCP_Client_NJ_E (Revision 2.3 date 23/07/2021 - JP Viskovic from France) I can read the coils using MODBUX Doctor (France) but I can't make work with Etherway. Any advice is welcome. Thanks   MTCP_Client_NJ.slr MTCP_Client_NJ_E.pdf
  17. If this has been asked and answered already, please point me in the right direction. I have a production line that uses Gefran Geflex temperature controllers on a Modbus and Machine Net communication system. The main control panel (MCP) is the master on the Modbus and communicates directly with 3 slave Geflex units (Group Leaders?) which then communicate with the others in that group via a Gefran Machine Net type interface (ribbon cable daisy chained from one unit to the next). The issue is twofold: These temperature controllers are slowly becoming harder to find AND they are a PITA to change out because they have to be put in place and then properly addressed using software on a laptop. This means more downtime waiting for someone who knows how to set these up to get there to do it say on a weekend/middle of the night type situation. (I do like my beauty sleep). I'm looking to replace these units with standard SSRs and control them with a PLC (P-2000 most likely). What I would need to be able to do is interface between the MCP and PLC in some way that the MCP still believes it is controlling 24 units (24 Modbus IDs) and have the PLC receive the reads and writes from the MCP and know which ID it was meant for in order to set the SV and respond with the PV and/or alarm codes as that ID. I hope that all makes sense. Basically I need a way for a PLC to act as if it were 24 separate Modbus slave units. Could I just use a separate HMI next to the MCP? Yes, but there are temperature dependent routines in the main operation of the line (extruder run inhibit, etc.) that requires the information reported back on the Modbus. I've looked into Modbus Gateways but the MGs I've found so far don't seem to be capable of assuming the role of 24 different slaves and interfacing with the PLC in a way that would allow the individual control.  Any ideas would be greatly appreciated.
  18. Hi every one. I have strange problem with Modbus communication in Citect 2018. I am communicating to the site switches through Modbus TCP protocol using MODNET driver and reading its sates. I am reading data from Input registers (registers addresses starts from 3x). In default, MODNET driver initializes communication trying conecting to holding register 40001 so I changed initialization in citect.ini to address 30001 because driver didn't want to establish connection because switches don't support holding registers. Now, connection to switches is working but only when page is open where I showing data from them. When I change the page, Citect loses communication and inform this showing alarm on HW alarm page. When I again open page where I show read data, communication back again. Where could be a problem? I will mention that I have more different Modbus TCP devices in project configured and with them don't have such problem. The only difference is that I am reading from holding registers and initialize parameter in citect.ini is not defined for them as for switches.
  19. Have been able to exchange data types of BOOL, INT,  DINT & REAL between Omron NJ/NX CPU with Allen Bradley Logix CPU's with Ethernet/IP using the CIPUCMMRead & CIPUCMMWrite instructions. I now have a need to exchange "STRING" variable types. Have tried varions string lengths in the NJ without sucsess. AB default string length is 82 & Omron 256 but I think the difference is the length headder that AB has with within their String Tag type. I know I could convert my strings to an array of bytes & sent them this way, but was looking for a solution to sent them as native strings. Hope someone out there has done this & can share their leg work? 
  20. Hello All, Please Help Me.. How I can to connect Omron CP1L-M + CP1W-Cif11 with Mitsubishi Inverter D700? Thank you. Omron modbus belum fix.cxp
  21. Greetings everyone, I have a TIA V16 project in which I set up 7 drives to communicate with an S7 1500 controller via RS485 using USS protocol. The drives are Simatic V20s daisychained to the bus and are properly terminated with resistors. I use the USS DRIVE CONTROL 31 function block for each drive all located in a single FC and all using the same single instance DB as recommended by Siemens. I then call this FC containing the FBs every 120ms from the MAIN OB. I then call the USS PORT SCAN 31 function in a cyclic OB set at 70ms cycle time. In each V20 i use PZD word length of 2 and a PKW of 4. Both setpoint and commands are sent through USS. What I have observed is every time take out incoming power to any one of the VFDs, the rest of them get F72 comms error and fail to communicate with the PLC. Is this behaviour normal? What causes it? I use an RS485/ 422 PtP BA module sending data at 19200bps. Strangely enough it doesn't show any fault even though the diagnostics interupt setting is enabled on it. What I noticed is that as I was setting up the VFDs one by one, the F72 fault on the BOPs only pop up on an already configured drives. So, the VFDs that hadn't been commissioned yet for RS485, but were already physicaly terminated/ connected to the PLC, didn't fault the bus when they were powered down. They only faulted the bus upon switching them off only after RS485 activation (post commissioning).
  22. 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
  23. 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

  24. 1783-NATR Modbus TCP

    Jim Hortenberry posted a topic in Allen Bradley / Rockwell Automation

    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!  
  25. 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