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Parameters shown are:
Device address
Device address can be displayed as decimal value (indicated as Dec) or hexadecimal value
(indicated as Hex). Default is a decimal display. To toggle displaying addresses decimal or
hexadecimal, use the Hex/Dec toggle option in the toolbar area (see section 5.1.3). When
comparing data to other screens in fieldbus control system check the address is displayed
in the same format.
Network node addresses 16-247 (decimal) are for permanently addressed field devices
(includes host). The assignment of a permanent node address may refer to the placing of
a device in an active mode, or a state in which the Foundation Fieldbus host application
may collect additional field device information and/or field device parameters. The
network node addresses 248-251 are temporary node addresses. The remaining node
addresses 252-255 are for temporary devices (e.g., handheld devices).
Device tag
User assigned device tag, stored in volatile memory.
Signal level
This is the communication signal amplitude of this particular device. The physical layer
standard IEC 61158-2 specifies transmit levels of 750 mV to 1000 mV under test
conditions with two terminators. Under plant conditions, the actual values will differ from
segment to segment and device to device, under some circumstances even significantly.
Typical values are between 550 mV and 1200 mV.
Retransmissions
Retransmissions detected by diagnostic module for this device since last reset.
A device will remain in the live list as long as it responds properly to the PTs sent from the
LAS. The LAS will remove a device from the Live List if the device does neither use the
