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Fieldbus signal status note
Description
With in the range for all nodes
All devices on the fieldbus segment have a GOOD fieldbus
signal.
Signal low/high on all devices
All devices on the fieldbus segment have signal
measurements that are higher than the set maximum
value or lower than the set minimum value.
Signal low/high on most devices
More than half of the devices on the fieldbus segment
have signal measurements that are higher than the set
maximum value or lower than the set minimum value.
Signal low/high on few devices
Fewer than half of the devices on the fieldbus segment
have signal measurements that are higher than the set
maximum value or lower than the set minimum value.
Signal low/high on <device address>
Only one fieldbus device has a signal measurement that is
higher than the set maximum value or lower than the set
minimum value.
5.4
Wiring diagrams for the Fieldbus Diagnostics
application
CAUTION!
Remove the USB cable from the Trex unit before connecting to a device.
CAUTION!
The Trex unit draws approximately 12 mA from the fieldbus segment when it is online. (The
Trex unit draws 0 mA when it is offline.) Ensure the power supply or barrier on the fieldbus
segment has the capacity to provide this additional current when the Trex unit is online. If a
heavily loaded fieldbus segment is drawing near the capacity of the segment’s power supply,
connecting the Trex unit may result in loss of communication.
Fieldbus Diagnostics application
User Guide
155
Содержание AMS Trex
Страница 1: ...User Guide Rev 3 August 2017 AMS Trex Device Communicator User Guide ...
Страница 8: ...Contents vi User Guide ...
Страница 130: ...Field Communicator application 122 User Guide ...
Страница 186: ...Fieldbus Diagnostics application 178 User Guide ...
Страница 198: ...Technical specifications 190 User Guide ...
Страница 206: ...Glossary 198 User Guide ...