Method for dynamic multihoming for reliable data transmission

A method comprising:

• at a first controller of a first communications module, generating a first signal representing a first safety state of a first node based on a first encoding scheme associated with the first controller;
• at a second controller of the first communications module, generating a second signal representing the first safety state based on a second encoding scheme associated with the second controller;
• at a first processor of the first communications module:
• in response to accessing the first signal and the second signal, generating a first message comprising the first signal and the second signal;
• classifying the first message into a first data class, in a set of data classes, based on the first signal and the second signal;
• accessing a first policy, in a set of policies, associated with the first data class, the first policy defining a first set of target conditions comprising an error rate falling below a first threshold;
• selecting a subset of communication links, in a set of communication links between the first communications module and a second communications module, corresponding to the first set of target conditions;
• and
• transmitting the first message via a first communication link in the subset of communication links, the first communication link exhibiting a first error rate falling below the first threshold;
• at a second processor of the second communications module:
• in response to receiving the first message, separating the first signal and the second signal;
• outputting the first signal to a third controller of the second communications module;
• and
• outputting the second signal to a fourth controller of the second communications module;
• at the third controller:
• detecting a first ternary state of the first node based on the first signal;
• generating a third signal based on the first ternary state;
• and
• outputting, to the fourth controller, the third signal as a first readback value;
• and
• at the fourth controller:
• detecting a second ternary state of the first node based on the second signal;
• and
• in response to detecting a match between the second ternary state and the first readback value, outputting, to a second node, a fourth signal representing the second ternary state.

A method comprising:

• during a first time period, at a processor:
• accessing a first set of data in a first data stream, the first set of data comprising a first encoded value representing a first safety state of an emergency stop device;
• classifying the first data stream into a first data class, in a set of data classes, based on the first encoded value;
• in response to accessing a second set of data in a second data stream, classifying the second data stream into a second data class, in the set of data classes, based on the second set of data;
• accessing a set of policies comprising:
• a first policy associated with the first data class, the first policy defining a first set of target conditions;
• and
• a second policy associated with the second data class, the second policy defining a second set of target conditions;
• selecting a first communication link, in a set of communication links, as a first active communication link for the first data stream and the second data stream, the first communication link exhibiting a first set of conditions corresponding to the first set of target conditions and the second set of target conditions;
• and
• transmitting the first set of data and the second set of data via the first communication link;
• and
• during a second time period succeeding the first time period, at the processor:
• in response to detecting a difference between the first set of conditions and the first set of target conditions:
• selecting a second communication link, in the set of communication links, as a second active communication link for the first data stream, the second communication link exhibiting a second set of conditions corresponding to the first set of target conditions;
• and
• transmitting a third set of data in the first data stream via the second communication link, the third set of data comprising a second encoded value representing a second safety state of the emergency stop device;
• and
• in response to detecting the first set of conditions corresponding to the second set of target conditions, transmitting a fourth set of data in the second data stream via the first communication link.