Jump to content

[[Template core/front/global/updateWarning is throwing an error. This theme may be out of date. Run the support tool in the AdminCP to restore the default theme.]]

Mitsubishi

Existing user? Sign In
Sign In

Remember me Not recommended on shared computers

Forgot your password?
Or sign in with one of these services

Sign in with Facebook

Sign in with Twitter
Sign Up

Followers 1

QJ71C24N Predefined Protocol Problem

Started by Ninety8, 22 Sep 2021

1 post in this topic

Posted 22 Sep 2021

Hello everyone. I am using a QJ71C24N module to read the current position of a motor connected with a servo driver through RS485 with Predefined Protocol. Everything worked fine until the RS485 cable was disconnected from the servo driver or the power supply to the servo driver was interrupted while reading the data. From that moment, after reconnect the cable or the power supply, PLC and the driver couldn't communicate with each other anymore (trigged CPRTCL but nothing happened, no error but no result as well). For now, the only solution is reset the PLC. After that, everything backed to normal, but that's always the worst thing I could do cause my machine is complex and it takes a lot of time to recover after resetting.

Could someone please help me with this problem? Thanks in advance.

Share this post

Link to post

Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign in

Already have an account? Sign in here.

Followers 1

Go To Topic Listing Mitsubishi

Browse
- Back
- Browse
- Forums
- Downloads
- Calendar
- Staff
- Online Users
Activity
- Back
- Activity
- All Activity
- Search

MrPLC.com sells used surplus products. MrPLC.com is not an authorized distributor, affiliate, or representative for the brands we carry. Products sold by MrPLC.com come with MrPLC.com’s 1-year, 2-year, or 3-year warranty and do not come with the original manufacturer’s warranty. Designated trademarks, brand names and brands appearing herein are the property of their respective owners. This website is not sanctioned or approved by any manufacturer or tradename listed.

Rockwell Disclaimer: The product is used surplus. MrPLC.com is not an authorized surplus dealer or affiliate for the Manufacturer of this product. The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because MrPLC.com is not an authorized distributor of this product, the Original Manufacturer’s warranty does not apply. While many Allen-Bradley PLC products will have firmware already installed, MrPLC.com makes no representation as to whether a PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. MrPLC.com also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from Rockwell, its distributors, or any other source. MrPLC.com also makes no representations as to your right to install any such firmware on the product. MrPLC.com will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.