Eaton easy800, Руководство пользователя

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7 SmartWire-DT
7.2 Cyclical input and output data of the SWD stations
Control Relay easy800 11/11 MN04902001Z-EN www.eaton.com
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Overview of value operands
• Marker byte MB1 to MB128
• Marker word MW1 to MW128
• Marker double word MD1 to MD128.
Diagnostics possibilities
easy800-SWD has the following diagnostic alarms:
• I13 - group alarm;
is 1 if a mandatory station has failed on the SWD line or if easy800-SWD
finds an “incorrect” station on the SWD line.
• Cyclic diagnostic information
• Extended diagnostics information
Cyclic diagnostic information
SmartWire-DT provides you with cyclical diagnostic information. This
information can be evaluated in the circuit diagram and used for further
control tasks.
This basic diagnostic information is coded in the normal process image of
each SWD station. The information about whether the SWD station is
exchanging data normally or whether diagnostic alarms are currently present
is provided on all SWD stations in the first input byte (byte 0) at bit positions
4 and 6.
Example of input and diagnostic data
The M22-SWD-K11-LED-R function element has a red LED for illuminated
pushbuttons and the two switch states 0 and 1. With cyclical input data of
one byte, it contains information on switch position and diagnostic
information.
Byte 0:

DANGER
Persons, systems and machines may be put at risk if an N/C
contact is misinterpreted. When using N/C contacts always
evaluate the PRSNT and DIAG diagnostic bits of this station.
7 6 5 4 3 2 1 0
Diagnostics data Input data
SUBST PRSNT – DIAG – – NO1 NC1