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11 What Happens If …?
11.5 Functionality of the NET faulty
340
Control Relay easy800
11/11 MN04902001Z-EN
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11.5.3 Station with NET-ID 1 fails
If the supply voltage of station NET-ID 1 fails during operation, the other NET
stations can no longer be notified of the associated operating mode change.
NET stations with NET-ID 2 - 8 on which REMOTE RUN is activated
therefore stay in RUN mode until the missing sign of life is detected. The
time until the missing sign of life is detected depends on the baud rate and is
from 180 - 9000 ms (
Section 11.5.1, “Monitoring via diagnostics bits“ ,
Page 338). Up to this time, a NET station 2 - 8 operates with the data
previously received via the NET.
The further behavior of the NET stations 2 - 8 depends on whether REMOTE
IO is also activated as well as REMOTE RUN:
•
NET station 2 - 8 with activated REMOTE RUN
This type of NET station sets the data received via the NET to zero. It retains
its operating state and sets the diagnostics bit ID1 to 1 (see following safety
measure).
•
NET stations 2 - 8 with activated REMOTE RUN and REMOTE IO that
function as input/output devices, i.e. without their own circuit diagram
This type of NET station sets the data received via the NET to zero. It
switches to the STOP mode if the device display is showing the Status
menu. The device follows NET station 1 when it switches to RUN mode.
Safety measure: On every NET station with a program, monitor the
diagnostics bits ID.. in order to detect a missing NET station as quickly as
possible (
Section 11.5.1, “Monitoring via diagnostics bits“ , Page 338).
Содержание easy800
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Страница 138: ...4 Wiring with 800 4 7 Working with function blocks 134 Control Relay easy800 11 11 MN04902001Z EN www eaton com...
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Страница 336: ...10 Diagnostics possibilities 10 4 Transistor output 332 Control Relay easy800 11 11 MN04902001Z EN www eaton com...