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  1. Hello. What is the best option using TCP/UDP communication to use CP1L-EM40 as SLAVE / IO Expansion? For MASTER I’m using CJ2M-CPU31. Since now I’ve used FINS _CPU010_SendData and _CPU011_ReceiveData function blocks. The problem is, that I’m communicating with 6 slave IO units and to read/write all 6 units it takes up to 1 – 2 seconds. I’ve tried Ethernet/IP protocol but CP1L units doesn’t support this protocol. Is there some kind of different TCP/UDP protocol which is faster than FINS?  In older days you could use PC Link but this protocol is for RS232 / RS485 comm. I know I could use CP1W-EIP61 but I don't have this adapter and I can't afford to buy one Thanks. 
  2. NMEA to CJ1M

    Hi there,    I need your help. I need to gather NMEA data to my cpu.  Whats the proper way to do it? I mean set serial port of cj and then to read ascii characters ?  

    Hello. Is there some kind of FUNCTION BLOCK to PING IP Device? Thanks. BR, Andrej. 
  4. Hello Everyone, I have a Omron CJ2M PLC, and I have configured the Ethernet/IP port of this PLC to communicate over ethernet connection. I want to read/write the DM, HR memory areas of Omron PLC (CJ2M) using eip protocol communication. Is there any protocol specification which explains the telegram structure to be sent over ethernet to be able to read/write the values in omron plc over EIP? I want to know the command structure which can be sent to PLC and PLC will respond with the proper response. 
  5. Netbiter read from CJ2M

    I see on the forum there are a couple of mentions of netbiter and they seem positive, ive just got one and do not understand how the messaging works. I have tried creating a template just to read D0, i believe i have setup all my IP settings correctly but i am not certain, they are on the same address range for sure. If anyone has used this before and could point me in the right direction that would be great  
  6. Built-in input and interrupt - Input 1

    Hi, I need to start interrupt from built-in input 1. Interrupt should be proceed on falling edge. Regarding manual I set: MSKS 7 #0 - enable interrupt in direct mode MSKS  11 #1 - interrupt 141 detect falling edge task no 141 Problem is that interrupt task is not executed - Q2.11 is not ON when signal goes off   Maybe you see some wrong settings/code   thankls Pawel      
  7. I'm trying to exchange some data between two controllers. I've used a manual which describes Tag Datalink communication. Everything works fine on the Bradley side, which means I can read values from Omron without problems. However, on the CJ it isn't working. In the Network Configurator I get error every 10 sec (Tag data ling error, code 03D5) and cannot read any data from AB. When I open Connection Structure Tree I see that the input tagset from AB has 'Broken path (0000000000000)' and Unknown Device right next to IP address. I've tried using EDS from the Rockwell as well as uploading it from AB PLC directly - I don't know if it might be EDS issue. The only thing I noticed that inside CJ2M-EIP21 EDS it says that Ethernet/IP is Class 1 connection, however in the 1769-L35E EDS Ethernet/IP is Class 2 connection. Have anyone ever had such a problem?
  8. CJ1M - upload and rung error

    Hi, I faced strange thing. From working PLC I uploaded code and in few places I have such a error What can be the reason of that - it is uploading . I use CX programmer 9.78 and original code was written in much older Cx programmer What to do to get right code?   thanks Pawel      
  9. Hello fellow tinkerers, Inside our company we're expanding our IoT network with the replacement of CJ1G-H to CJ2M CPU units. When swapping models we are downloading the Datamemories back into the CPU. Our engineer warned us to not download all the DM memories: only up to D20000, so I did. When starting we had some inputs that weren't showing in the Data trace: and noticed that it were pulses shorter than 8ms. We found out the "Unit settings" were back to default and this is not unusual since we only downloaded range D0-D20000 but I'd like to avoid this in the future and look up what each datamemory means. I know D30000 to D31599 are the memories for the CPU bus unit settings (manual W473 section 4-5) but what range is the "unit settings" within these 1600 datamemories? I can't seem to find it in any manual I look into (W473, W472).. Also do you see any problems with downloading the full datamemory range?   Kind regards!
  10. Send and Recv function

    Hi, I'm trying  to use send and receive function. I have to send 2 words from cpu CJ2M CPU33  to CJ1M CPU13. I use enthernet network.  I saw a strange thing  that if I just use send function  then my data goes to second  plc without  having  a receive function.  Its that right? I didn't  mentioned  wich port because  I'm not sure wich  is. I left for automatic allocation. 
  11. Symbol transfer when editing online

    Hi everyone, I am having a problem with a CJ2M-CPU33: when finishing the online edits, it never asks me to store the changed symbols and/or program comments, so they are not updated in the PLC memory and cannot be uploaded later. First time this thing happened to me, I am connecting to dozens of CJ in this factory and it's the first time I've encountered this problems in 16 years.
  12. Need a little help

    I am probably over looking something simple but I am stuck. I need to count how many containers come down a conveyor and display it in Indusoft Web Studio 2020. I am using a CJ2M to count from a sensor doing an binary incremental long word (++L) Using long word as the count will need to go into the thousands. (not 100% if this is the correct way). My problem is after 99 the value sent to indusoft is not a number but letters or signs. I am sure their is a simple solution but I have given my self a headache and need a little guidance please. 
  13. cj2m

    hi i am wrting an essay about my final project , i created a scada for omron plc (CJ2M) in factory . ( i am a computer data student )  the thing is , i can't find a good and an easy  documentation ( not the CJ2M datasheet ) to talk about the CJ2M component (port and stuff like that) any help please ?   
  14. CJ2M - FC280 Danfoss Ethernet IP

    Hello!!! Can somebody explain me how to communicate by ethernet IP between a CJ2M and a FC280? Thank you in advance!!!
  15. Can a CJ2M communicate to a C200H??

    Hello! I just got an interesting request from a customer, we have a product line that uses C200H PLCs.  The cabinets can operate independently or they can be connected to work in a Master/Slave configuration, the C200 PLCs communicate to each other over RS-232 using LR registers. Back in 2015 we redesigned to use CJ2M PLCs and changed the communication to EthernetIP. Now we have a customer who wants to buy a new slave for an old C200H system, so my question is what are my options for communicating to a C200 with a CJ PLC, I don't have much experience with the C200, that was programmed before my time here, in 2000 I think. Thank you!!!      
  16. 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  from It works perfectly. But I have three SLAVE UNITS to communicate to. I'm trying to do this using [524] 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
  17. 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. 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
  18. Hi all, I am currently having a project of polling data from PLC CJ1M using Advantech ECU-1051 IoT gateway which support rs-232 serial connection (Host Link) to poll data from the PLC for data acquisition and monitoring, I would like to use peripheral port since rs-232c port is used for HMI. However, I am currently stuck at make the connection between those two devices. I did setup same transmission configuration between them (baudrate, Unit number, start/stop bits,...). Is there any configuration that I have missed to make the communication works?  
  19. CJ2m Time as millis()

    Hello. I'm using CX-Programer and CJ2M CPU. Is it possible to get current time in ms like in arduinos millis()? Thanks. BR.
  20. Hey all, Further to my other post I need to read an analog input flowmeter signal (4-20mA) and scale it to litres per minute flow-rate. Then display on HMI...... Then use a PID control block to control a output water control valve (4-20mA) to a calculated set point (litres per minute) The flowmeter is measuring water flow in a pipe & The control valve is controlling the flow rate in the pipe. The water is then sprayed onto a conveyor belt - measured at a percentage SP depending on the amount of powder product on the conveyor belt (in KG) 1. So inputs to PID is the SP (litres per sec) calculated every few seconds from product weights (kg) in bins. 2. And the PV is the flowmeter reading. 3. Output is the control valve (4-20mA)  Does anyone have any tips to do this or some good flow PID and flowmeter example. Your help would be much appreciated. Thanks Richard                           
  21. Hey, I have a project which one part involves using a RTD PT100 (0-100 Deg.C 4-20mA) connected to a CJ1W AD041 (ATD input card), the PLC is a CJ2M Basically the PLC needs to read the RTD and display the temperature on a Omron HMI (NS10), via Ethernet, Could someone please help me out with a basic example program - to read and convert the RTD - ATD value to store in memory. Your help would be most appreciated. Thanks  Richard       
  22. CPU to Advaced HMI slow response

    HI all,  I have connected my CJ2M-CPU13 to Advanced HMI software via Hostlink (19200,7,2,E ) .  I connected to the serial port in CPU and just used ( didnt write any code or formating).   The HMI response is very slow ( almost 2+seconds).  I am not sure whats is wrong, Is it because i am using more words?  Anybody had this encountered this problem? Appreciate all suggestions and advices.    
  23. Hi! I would like to ask how could I send data from PC to CJ1M PLC, by SCU-41 module and RS232 cable, in order to activate an actuator (LED)? In my environment, I have a sensor that sends data from PLC to PC (I'm checking data, "HelloWrld" with Putty), with this configuration: And I have another section where I want to read the data from the PC in ordr to activate a LED I would like when I send for example a letter 'a' trough Putty, the LED activates. How could I do that? Thank you very much!
  24. Hello People!....  I would like send command to start/stop printer on modbus... the printer is already connected to plc and receive number to print on wood sheet...  after research i'm not find any example to send this command.... i join picture with command to send... you can make a example for i test it ?? ;) thanks you     ScreenShoot Markem Imaje Command
  25. CJ2M PLC power supply wiring

    HI all,  Is there anything issue or wrong in thing connection ( added noise filter & fuse. )?