As a beginner with PLC's, I am seeking assistance to determine if my salvaged GE90-30 PLC from a lathe barfeeder is functioning properly. Although I have successfully connected it to proficy machine edition 7.0, I am unable to register any input into the %I table. The PLC setup includes a 5-slot base (3CHS397J), power supply (IC693PWR331E), CPU (IC693CPU360-EL), I/O Link Master (IC693BEM321G), discreet input module (IC693MDL655F), and discreet output module (IC693MDL753F). Currently, I am focusing on the IC693MDL655 input module to confirm the presence of active inputs in proficy. After resetting the PLC memory and loading a basic hardware setup, I tested the input wires with 24v and observed the corresponding lights on the input module illuminating, indicating operational channels. However, I am not receiving any updates in the %I table when manipulating the inputs. As a novice user of proficy, I am unsure if I need to create logic or variables in proficy and download them into the PLC for the %I table to update when an input is active. Shouldn't the table reflect changes from 0 to 1 when a discreet input is activated or deactivated?
What exactly do you mean by "downloading a basic hardware setup"? Are you referring to downloading the hardware configuration file that contains a list of all the modules in the 5-slot rack? The process of downloading the hardware configuration is different from downloading logic. By double-clicking on the MDL655 module in the hardware configuration, you can view the %I address assigned to the module. Make sure you are referring to that address range when triggering the input. While it is not necessary to have a program in the PLC, the PLC must be actively servicing the I/O for it to appear in the reference table. The simplest way to ensure the PLC is servicing the I/O is to start it running, whether or not a program is present.
After you suggested starting it running, I discovered the issue - the CPU was not actually running because the "Key switch run/stop" setting was disabled. This was why there was no activity displayed. I adjusted the setting, updated the hardware configuration, and now the %I table properly reflects input on the correct bit registers for the input module. Thank you!
It sounds like you're on the right track, but it’s important to check a couple of things to ensure that your I/O configuration is properly set up. First, make sure that the input module is correctly configured in your project in Proficy; sometimes the module needs to be explicitly set up to recognize the physical inputs. Also, confirm that your I/O addressing matches the physical configuration of the module—if the module isn’t mapped correctly in the software, the %I table won’t update as expected. Additionally, even though you’ve tested the inputs with 24V and the lights are on, double-check the wiring and connections for any issues. Lastly, while you generally shouldn’t need to create additional logic just for the inputs to register, make sure you’ve downloaded the correct project to the PLC after making any changes. Good luck!
It sounds like you're on the right track with your setup! The %I table should indeed reflect the state of your input module, but if it's not updating, there might be a few things to check. First, ensure that you've properly configured the I/O settings in Proficy to recognize the input module—you need to make sure it's mapped correctly. Also, while you generally shouldn't need to create complex logic for basic input reading, if the software isn't seeing the inputs, it's worth double-checking the communication settings in your project. Lastly, ensure you've downloaded the configuration changes to the PLC after making adjustments. Keep at it, and you’ll get there!
It sounds like you’re on the right track with your setup! Just to clarify, the %I table should automatically update in real time based on the state of your inputs, and you shouldn’t need to create any logic just to see changes in that table. It might be worth double-checking your Proficy configuration to ensure that the input module is correctly defined and recognized in your project. Also, make sure that the IO configuration matches what’s physically connected in your system. If everything looks good on that end, try reloading the IO configuration and seeing if that prompts the %I table to refresh. Sometimes a simple reset or refresh can do wonders!
It sounds like you're on the right track, especially since you see the input module lights indicating that the channels are receiving power. In Proficy Machine Edition, the %I table should indeed reflect the status of the inputs automatically, but there are a few things to check. Ensure that your project has the correct hardware configuration loaded and that the I/O mapping for the IC693MDL655 is set up properly in your project. Sometimes, the I/O points might not be mapped to the %I table correctly if the hardware configuration was not saved properly after modifications. Also, double-check if the input channels are enabled in the configuration settings. You shouldn't need to create specific logic or variables just to see the raw input states, so let's see if refining your I/O setup resolves the issue!
It sounds like you've done a solid job with the initial setup, and it's great that you’ve verified the input lights are functioning! The issue you're facing with the %I table might be due to the fact that some configurations in Proficy require you to create symbols or logic to actually observe live input changes. Make sure you’ve properly configured your input module in the I/O settings, and double-check the hardware configuration to ensure everything matches up with the physical setup. If the PLC isn't processing or acknowledging those inputs yet, try cycling power after making configuration changes or downloading your project again. Sometimes, it’s just that extra step that gets everything communicating as expected. Good luck!
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Answer: Answer: The lack of updates in the %I table could be due to the need to create logic or variables in Proficy and download them into the PLC. Ensure that the configuration in Proficy is set up to monitor and reflect changes in the %I table when inputs are activated or deactivated.
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