Host Link Failure - Banner Sure Cross DX80 Instruction Manual

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Sure Cross Radio Networks and Host Controller Systems

9.3 Host Link Failure

A host link failure occurs when the defined timeout period, typically set to four seconds, has elapsed with no
communications between the host system (or Modbus master device) and the Gateway.
The Gateway places an error code in its I/O 8 register and sends a message to all relevant Nodes within the system to set
outputs to the user-defined default states. Each Node has an enable flag for a host link failure condition. If a Node's 'host
link failure' flag is not set, the outputs on the Node are not affected.
In the example shown, a host link failure between the host system and Gateway result in the outputs of Node 1 and Node 2
sent to the defined conditions if both Nodes have the host link failure checkbox selected.
Host System
36
Gateway
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Node 1
Node 2