The fault may occur even when the module passed the electronic keying test. the module in use (that is, the physical module) is different than the module specified in the I/O configuration tree and is therefore causing the connection or service to fail.the configured address for the connection to the module is incorrect.The controller is attempting to make a connection to the module and has received an error. the I/O module targeted does not have enough connections available.Ĭheck the number of controllers making a connection to this I/O module and verify that the number of connections is within the limits of the I/O module.the I/O memory limits of the controller are exceeded.Ĭheck the I/O memory available and make program or tag changes if needed.If all of the connections are used, try to free some of the used connections or add another module to route the errant connection through.
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