text: <s>[INST] RSNetWorx ControlNet Software. I've observed that all the I/O IF16H and OF8H installed on 1 backplane rack lost their hart parameters. Upon download the back up program the control module properties shows the code 16#0304 wich indicate that the module is not configured to send scheduled data.To use the RSNetWorx software is it required to purchase  the subscription to allow donwload from the website? [/INST] When the ControlNet was scheduled, it generated a Keeper Signature and a Scanner Signature.  The Keeper Signature was injected the online Keeper capable devices e.g. 1756-CNB, 1756-CN2, etc.  The Scanner Signature was injected into your online CLX L72 processor.  After successfully scheduling ControlNet, you must immediately upload from the CLX controller to your PC because the online controller has the (injected) Scanner Signature.  If you do not upload after scheduling, then your offline ACD does not have the (injected) Scanner Signature and downing that ACD (without the Scanner key) will break your ControlNet connections.  If you upload after scheduling, then you can download without breaking the scheduled connections.  Once the Scanner Signature is captured in the offline file, you can change anything in that file and you will not break the scheduled ControlNet connections (unless you modify the ControlNet connections e.g. path, RPI, tag size). If you export your ACD file to a L5k or L5x and look at the ControlNet card, you will see the Scanner signature.  This Scanner signature is not visible in the RSLogix5000 software, but it is generated and displayed in RSNetworx.  If you don't upload the CLX after scheduling, then the ACD file on your PC will have the wrong Scanner Signature... By default it will be 16#0000_0000..  The Scanner Signature in the CLX controller (shown below via the L5k export) must match the Scanner Signature that was registered in the Active Keeper.\n </s>