ControlNet: (Code 16#0317) Connection not scheduled

Hi,

We have ControlLogix installed at my plant with Flex IOs communicating with controller through ControlNet module. Yesterday, while controller was working normally suddenly the following fault appeared and communication halted with IO cards:

Module: AP0602 (1794-ACNR15)

Module Fault: (Code 16#0317) Connection Request Error: Connection not scheduled.

Status: Faulted

Status returned to running when the module was soft reset, but I need to identify what was the reason for this fault? Was there any issue in the ControlNet module or the network tree connecting different Flex IOs. WhatsApp Image 2023-09-04 at 4.18.17 PM.jpegWhatsApp Image 2023-09-04 at 4.18.16 PM (1).jpg
 
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