![background image](http://html1.mh-extra.com/html/eaton/easy800/easy800_manual_3950236342.webp)
11 What Happens If …?
11.5 Functionality of the NET faulty
338
Control Relay easy800
11/11 MN04902001Z-EN
www.eaton.com
11.5.1 Monitoring via diagnostics bits
Diagnostic bits ID01 - ID08 (
page 325) provide information on the presence or absence of NET stations.
The state of the diagnostic bits is defined by the reception of a sign of life
signal that every NET station sends.
If the sign of life signal of a configured NET station is no longer received, the
diagnostics bit ID01 -ID08 for the missing NET station is immediately set to 1
for all remaining stations.
The sign of life signal is sent cyclically depending on the baud rate.
The presence of the configured NET stations is evaluated at the following
time intervalls:
If, for example, the station with NET ID 7 is missing, the diagnostics bit ID7
changes to 1 on every remaining NET station. The missing station is also
indicated by means of a permanent light on the LED NET for all remaining
NET stations.
Example of scanning the diagnostics bit ID..
Figure 221:Scanning the diagnostics bit in the circuit diagram
= Visible area
Baud Rate
Station must send a “sign of life” every ...
Station detects a missing sign of life
signal from …
[Kbit/s]
[ms]
[ms]
1000
60
180
500
60
180
250
120
360
125
240
720
50
600
1800
20
1500
4500
10
3000
9000
CAUTION
In order to ensure that a circuit diagram with NET operands
(e.g. 3GT01) is always working with the latest data, you should
query the diagnostics bit ID.. of the sending NET station (see
following example) before evaluating the operands.
If you do not evaluate the appropriate diagnostics bit, this may
cause malfunctions in your application.
ID03-----------------------------
Ä
:01
GT03Q1-------------------------DB16T_
....
:01....
Содержание easy800
Страница 1: ...11 11 MN04902001Z EN replaces AWB2528 1423GB Manual Control Relay 800 4 patpks nycmyn...
Страница 4: ...2...
Страница 16: ...0 About This Manual 0 5 Writing conventions 12 Control Relay easy800 11 11 MN04902001Z EN www eaton com...
Страница 138: ...4 Wiring with 800 4 7 Working with function blocks 134 Control Relay easy800 11 11 MN04902001Z EN www eaton com...
Страница 300: ...7 SmartWire DT 7 4 Errors on the SWD line 296 Control Relay easy800 11 11 MN04902001Z EN www eaton com...
Страница 336: ...10 Diagnostics possibilities 10 4 Transistor output 332 Control Relay easy800 11 11 MN04902001Z EN www eaton com...