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What causes 'Modbus error: Exception response code 01.' when downloading an Advantys configuration while connected online to an island?

This error will occur if you do not adhere to the selection for the Master Configurator in the web pages.
The master configurator of an Advantys STB island controls the configuration data for all of the I/O modules. The configuration master must run the Advantys configuration software. The configuration master can connect to either the fieldbus (Ethernet) interface or the CFG port on the STBNIP2212.
The master configurator options are either IP (specifying address), Serial, or Disabled. The default selection is Disabled. For example, if IP is selected with an address, attempting to download a configuration from a PC without this IP address over ethernet or serially via the CFG port will cause this error.

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