Is there a way to dynamically set the output window on-off values without needing to disable the module? I remember that when I initially began debugging on this machine, I didn't have to disable the module to update the values. At present, when I modify the window values using the ladder program, the Output Configuration tab in the module displays the changes. However, the new values are not activated until I disable and re-enable the module. Any suggestions on how to achieve this without inhibiting the module would be greatly appreciated. Thank you for your assistance!
According to Rockwell's technical documentation, it is necessary to disable and then re-enable the module in order for the window on-off values to be refreshed. This important step was not included in the manual, but I found a workaround to prevent losing the encoder position. By saving the encoder position before disabling the module and then reloading it into the counter Preset, I was able to maintain accuracy.
It is my understanding that due to the values being programmed into a low-level microcontroller, they cannot be updated dynamically. Therefore, the microcontrollers are configured either at startup when the Configuration assembly is sent to the module, or when the connection is re-established (such as after un-inhibiting). The 1756 series modules are capable of supporting a "Reconfigure Module" type CIP message, although it is uncertain if the same functionality exists for the 1734 series modules. Since the inhibit/enable process involves SSVs and has proven to be effective, it is recommended to continue using this method.
When the controller loses power, the module does not store the on-off window settings. As a result, you need to manually enable or disable the module upon startup to save the on-off window configurations.
Has anyone been able to effectively load values into the output window of a 1734-VHSC24 module without impacting its functionality? I'm currently working on a cut to length application and experiencing difficulties with the clunky process of loading and reading back on/off values. It's frustrating to have to verify the successful writing of values through messaging. Overall, I'm disappointed with the performance of this module.
Certainly! Do you require images detailing the step-by-step process for Inhibit code?
It sounds like you're experiencing a common and frustrating issue. From my experience, you might not be able to make these changes dynamically as you expect without disabling the module. However, you might try checking if there is a firmware update available for your module, as sometimes manufacturers add functionality like this in updates. Alternatively, it may be worth checking for a setting in your ladder program that allows changes to be made 'on the fly'. It could also be useful to check if there's a setting that's locking the values while the module is running to prevent unintentional changes - you may want to disable it. Best of luck!
It sounds like you're dealing with a common issue among those familiar with PLCs. One of the ways you can dynamically set the output window on-off values would be by manipulating a secondary set of registers that are then used to update the main active register values in your PLC code, all without needing to disable the module. A key thing to remember: Always ensure that your validation checks are in place to stop any conflicting values from causing errors. It might require a little more programming, but it adds flexibility to your system.
✅ Work Order Management
✅ Asset Tracking
✅ Preventive Maintenance
✅ Inspection Report
We have received your information. We will share Schedule Demo details on your Mail Id.
Answer: 1. How can I set output window on-off values on the 1734-VHSC24/C High Speed Counter Module without disabling it? - You can try modifying the window values using the ladder program, but the changes might not be activated until you disable and re-enable the module.
Answer: - Initially, there might have been a way to update the values without disabling the module, but currently, it seems that disabling and re-enabling the module is necessary for the changes to take effect.
Answer: - The changes made to the output window values in the ladder program may require the module to be disabled and re-enabled for the new values to become active.
Join hundreds of satisfied customers who have transformed their maintenance processes.
Sign up today and start optimizing your workflow.