(build 3.4.52 or higher, or AX-3.5 and later) ModbusClientExceptionStatus is a component used to read and expose Modbus function code 07 (Exception Status) data from a Modbus device. To use, you copy (drag) from the palette, and paste (drop) directly onto a client Modbus device —it must be a direct child of the ModbusAsyncDevice, ModbusTcpDevice, or ModbusTcpGatewayDevice.

Slots in this component include a “Bytes Returned” configuration property, where you specify whether the device uses 1 or 2 bytes for exception status, and also the poll frequency to be used. Read-only “Read Status” properties provide a numeric “Error Code” and “Error Description”, as well as timestamps of both the last successful and last failed read attempts. Other output slots expose the exception status data as StatusBooleans on “Bit0” to “Bit15”, as well as a StatusNumeric “Out” slot.

For more details, see About Modbus client exception status.