9. Operating system diagnostic messages
9.2 Transistor outputs (overload / short-circuit)
9.2 Transistor outputs (overload / short-circuit)
The base and expansion devices' transistor outputs are thermally protected against
overloads and short circuits. If the temperature inside the four transistor modules is
too high, the outputs will be switched off. If the temperature returns to the operating
range and the outputs are driven, the transistors will switch back on.
The overload / short circuit fault scenario can be detected for the base device with
operand ID14.
ID14 = 1, error
Expansion devices feature a "DIAG" output that you can assign to operands ID25
through ID96 for each device.
Transistor output example
Transistor outputs on expansion devices EASY-E4-DC-8TE1(P), EASY-E4-DC-16TE1(P)
When there is a short circuit or overload at an output, the DIAG diagnostic message
can be applied to a diagnostic operand. This means that when the event occurs, the
operands will assume a state of 1.
9.3 Diagnostics buffer
Only possible with easySoft 8.
During online operation, the diagnostic buffer will be shown in the Communication
view. Additional information on this the easySoft V8 Help system
672
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