The following graphics show the operating modes in Character Mode for PCMCIA Modbus cards, the built-in link of the TSX SCY 21601 module and the Terminal Port.
The operating mode is as follows:
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After power-up the module self-tests. During this stage the warning indicators flash.
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If there is no Control Expert application in the PLC, the module awaits configuration.
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If there is a Control Expert application in the PLC, the application's configuration is transmitted to the module, and then the module starts up.
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When there is a power outage, the PLC processor carries out a hot restart. The module then restarts its auto-test procedures.
