Segment Check

When first connected, the FBT-6 gathers data for all of its monitoring

functions. If all the measured data is within an acceptable range, the

Monitor displays “ALL MEASUREMENTS OK”.

Voltage

The DC voltage on the network is shown. Measurements over 9 volts

are OK. The maximum input voltage is 32.0 volts.

Device Count

If there are fieldbus devices active on the network, the Monitor counts

them. If the count has remained the same since the initial network

check was performed, the display shows “OK”.

Note: on Foundation™ fieldbus networks, the Link Active Scheduler

(LAS) is considered a device and, as such, is included in the count.

The FBT-6 is more sensitive to missed communications than most PC

monitoring software. As a result, a device may still show up on PC

monitoring software, even though the FBT-6 has removed the device

from its internal list of active devices. Devices having communication

difficulties may show up on the FBT-6 as repeatedly being added or

dropped. If a device leaves the network, the display shows “–”; if a

new device is added it shows “+”.