IO_Rack

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About IO_Rack

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    Automation Specialist

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  1. Cannot connect to PLCs

    You're welcome. Thanks for the feedback. You can now go to the Settings and change/match serial settings on the Host Link Port tab. Then you can turn pin 5 back to OFF. It's there for the convenience of establishing a connection when you don't know the serial settings. 
  2. Cannot connect to PLCs

    Auto Online can be funny sometimes. Try turning DIP switch pin 5 to ON then manually set the serial settings in CX Programmer to 9600, 7, Even, 2.
  3. Alternative to SET/RSET

    I wouldn't let any of us discourage you from using them if it makes sense to you. The important thing is to understand how they operate. The fact that you are asking the forum, says you are taking the proper care. The warning in the help section says that the SET/RSET and KEEP instructions will retain the last state inside the IL/ILC even when the IL is turned OFF. It will prevent it from tuning ON but it will Not turn if OFF.
  4. Alternative to SET/RSET

    I almost posted a latching example using the JMP/JME. I found it in a Japanese program that nearly drove me crazy.
  5. Alternative to SET/RSET

    The SET / RSET is an effective method to turn outputs ON and OFF. As stated, it is just a warning. If you duplicate a standard OUT instruction, the first OUT will not work. Below are three examples of latching. Why do you feel a need to use the IL/ILC instructions? In my opinion, it can be an effective method of disabling sections of code but otherwise not use them. The JMP/JME instructions are even more confusing. I believe most programmers will encourage you to steer clear of them.
  6. PLC Memory & Pop-ups

    Make the Pop Up screen as per Jay's document. The Pop Up screen can be triggered from the PLC using the $SW Allocation Address. After assigning a PLC address for this area in the NS, populate the (Assigned Address +1) with the screen number of your pop up.
  7. I would assume the network is using the FINS protocol. I would check the FINS settings in the SCADA, HMI and PLC to make sure they have unique FINS node addresses. I'm not well versed in FINS. Maybe someone else can suggest a solution.
  8. Best Connection of Loadcell monitor to PLC

    I took a quick look at the PT brochure. It appears your options are: 1) RS232C - In this case you would use the RXD instruction in the CJ2. 2) Ethernet (Modbus TCP) - The PT is not capable of Ethernet/IP but you may be able to use Modbus. I don't know how. My suggestion is to use RS232C. I would set the scale to 'Streaming' then read the stream of data with the RXD instruction. There are examples here in the downloads section. Set your weighing indicator to 'Streaming' then test it with your PC and some terminal program like Realterm. Once you know it is outputting data, then you can connect it to the CJ2 serial port and begin programming RXD instruction.
  9. I never used Kepware OPC so I don't know about any possible configuration issues. It sounds like the SCADA and the HMI are trying to write different values to the same address. What happens if you connect the SCADA PC only?
  10. Best Connection of Loadcell monitor to PLC

    First you must make sure your hardware will support the Ethernet/IP protocol. The PLC will be the master or commonly referred to as a Scanner. Some smaller Omron PLCs with Ethernet ports will not support being a Scanner. What model PLC are you using? The scale you use must also support the Ethernet/IP protocol. The scale documentation will outline the data exchange and supply you with an EDS file. The EDS file will be imported into Omron's Network Configurator software then downloaded to the PLC so that the PLC can know what data to exchange. No command will be necessary. The data will be exchanged cyclically to the memory you choose in Network Configurator. Sounds easy, right? Sometimes it is and sometimes it is not. Let us know what hardware you are using. Maybe some forum members can suggest hardware they have had success with.  
  11. Help with Analog Input (AD081-V1)

    It looks like you have done everything correctly. Have you cycled power to the PLC after transferring these settings? Then go back to the settings and do a Compare at the [View Parameters] screen.
  12. Track NS series IP addresses

    I think Crossbow understands you correctly. To the best of my knowledge, there is no way to transfer the IP address to a variable. To see what information is available, take a look at PT > System Settings > Initial (tab) > System Memory List. You can also look at the Macro Reference Manual. There are some well experienced Omron guys here. If there is some clever method of doing this, I'm sure they'll respond. If you want to use the same program for all touch screens then create a settings screen where you can use a Numeral Input/Display object to input a variable (as Crossbow has mentioned). (Maybe the last octet of the address). All the programs can be the same but the downside is, you'll have to change this variable when you change the IP address.
  13. Best Connection of Loadcell monitor to PLC

    I agree you be more accurate using communications. To use serial communications you'll need to look at the TXD and RXD instructions. For Ethernet I would suggest using the Ethernet/IP protocol. Be sure that each Ethernet port you choose will support the Ethernet/IP protocol.
  14. You'll have to be more specific explaining the issue. Does each device on the network have a unique IP address?