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VAT_ASI_IOVariable table, AS-i startup example.
12.2.6
Variable table VAT_ASI_IO
In the hardware configuration the 16 bytes of I/O data for the AS-i/DP Gateway are
coupled to the input/output byte Address 2 to 17 of the process image. The directly
send AS-i diagnostic information for error processing are evident from the input
bits of the EW0.
Flags + Fault Detector
Bit 0 = Konfigurationsfehler
Bit 1 = Slave with address ZERO detected
Bit 2 = Automatic addressing not possible
Bit 3 = Automatic addressing available
Bit 4 = Projecting mode active
Bit 5 = Not in normal mode
Bit 6 = AS-i-Power Fail
Bit 7 = AS-i-Master is offline
Bit 8 = Peripheral error
Bit 9 = reserved
Bit 10 = reserved
Bit 11 = reserved
Bit 12 = Earth fault
Bit 13 = Overvoltage
Bit 14 = Noise
Bit 15 = Double address
This allows the AS-i circuit data to appear directly in the process image inputs/out-
puts.
Subject to reasonable modifications due to technical advances.
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Appendix: Example for startup on a Siemens S7
AS-i/PROFIBUS-Gateway
Copyright Pepperl+Fuchs, Printed in Germany
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