8-56 Preset Reference Select
Option:
Function:
[0]
Digital input
[1]
Bus
Activates Preset Reference selection via the serial communica-
tion port or fieldbus option.
[2]
Logic AND
Activates Preset Reference selection via the fieldbus/serial com-
munication port, AND additionally via one of the digital inputs.
[3]
*
Logic OR
Activates the Preset Reference selection via the fieldbus/serial
communication port OR via one of the digital inputs.
Select control of the frequency converter Preset Reference se-
lection via the terminals (digital input) and/or via the fieldbus.
NB!
This parameter is active only when
par. 8-01 Control Site
is set to [0]
Digital and
control word
.
2.9.7. 8-8* FC Port Diagnostics
These parameters are used for monitoring the Bus communication via the FC Port.
8-80 Bus Message Count
Option:
Function:
This parameter shows the number of valid telegrams detected
on the bus.
8-81 Bus Error Count
Option:
Function:
This parameter shows the number of telegrams with faults (e.g.
CRC fault), detected on the bus.
8-82 Slave Message Count
Option:
Function:
This parameter shows the number of valid telegrams adressed
to the slave, sent by the frequency converter.
8-83 Slave Error Count
Option:
Function:
This parameter shows the number of error telegrams, which
could not be executed by the frequency converter.
2. Parameter Description
VLT
®
AQUA Drive Programming Guide
114
MG.20.O2.02 - VLT
®
is a registered Danfoss trademark
2