ABB ACS880-01 Series, Firmware Instructions

Page: 377 / 664

Parameters 377
50.21 FBA A timelevel sel Selects the communication time levels.
In general, lower time levels of read/write services reduce
CPU load. The table below shows the time levels of the
read/write services for cyclic high and cyclic low data with
each parameter setting.
* Cyclic high data consists of fieldbus Status word, Act1 and
Act2.
** Cyclic low data consists of the parameter data mapped to
parameter groups
52 FBA A data in and 53 FBA A data out ,
and acyclic data.
Control word, Ref1 and Ref2 are handled as interrupts
generated on receipt of cyclic high messages.
Normal
Normal Normal speed. 0
Fast Fast speed. 1
Very fast Very fast speed. 2
Monitoring Low speed. Optimized for PC tool communication and
monitoring usage. 3
50.26 FBA A comm
supervision force Activates fieldbus communication monitoring separately for
each control location (see section
Local control vs. external
control on page 24 ).
The parameter is primarily intended for monitoring the
communication with FBA A when it is connected to the
application program and not selected as a control source by
drive parameters.
0000b
0000b…0111b FBA A communication monitoring selection. 1 = 1
50.31 FBA B enable Enables/disables communication between the drive and
fieldbus adapter B, and specifies the slot the adapter is
installed into. Disable
Disable Communication between drive and fieldbus adapter B
disabled. 0
Option slot 1 Communication between drive and fieldbus adapter B
enabled. The adapter is in slot 1. 1
Option slot 2 Communication between drive and fieldbus adapter B
enabled. The adapter is in slot 2. 2
Option slot 3 Communication between drive and fieldbus adapter B
enabled. The adapter is in slot 3. 3
No. Name/Value Description Def / FbEq16
Selection Cyclic high * Cyclic low **
Monitoring 10 ms 2 ms
Normal 2 ms 10 ms
Fast 500 µs 2 ms
Very fast 250 µs 2 ms
Bit Name Value
0 Ext 1 1 = Communication monitoring active when Ext 1 is being used.
1 Ext 2 1 = Communication monitoring active when Ext 2 is being used.
2 Local 1 = Communication monitoring active when local control is being
used.
3…15 Reserved