Baumuller b maxx BM4400 User Manual

Parameterizing the BACI communication times
Application Manual POWERLINK Controlled Node
Document no. 5.13013.04 Baumüller Nürnberg GmbH
18
of 80
4.2
4.2 Parameterizing the BACI communication times
Between the POWERLINK Controlled Nodeand the b maXX 4000 controller 8 set val-
ues and 8 actual values can be exchanged as process data in a communication cycle.
Wh
ich set values and actual values are exchanged is specified in the mapping objects on
the POWERLINK Managed Node, see ZDa
ta Exchange and Parameterization– from
page 27.
The setting of communication times between PO
WERLINK Controlled Nodeand b
maXX 4000 is automatically set by the option module. The SYNC interval of the control-
ler, the BACI communication cycle time (rate set values, actual values), the cycle offset
o
f the set values and the cycle offset of the actual values are set by means of the cycle
time in object 0x1006 set in the Managed Node.
The b
maXX 4000 controller initiates a communication time slot every 125 µs, in which
process data set values or process data actual values are transferred.
The communication cycle time is a multiple of the c
all of the communication time slice of
the controller (every 125 µs).
The factor is calculated as follows:
Cycle time set values, actual values
communication cycle time (in µs)
125 µs
---------------------------------------------------------------------------------------=
The process date set values and the process data actual values are transmitted in differ-
ent communication time slots. Therefore, differ
ent cycle offsets are stated for the set val-
ues and for the actual values. The cycle offset
is nothing but the number of the
communication time slot transmitting the data.
The configuration by the option card is as follows:
Cycle time
(object 0x1006)
BACI cycle time
(P0800)
Set value offset
(P0818)
Actual value
offset (P0819)
250 µs 2 0 1
500 µs 4 2 3
1000 µs 8 3 5
2000 µs 16 4 10
4000 µs 32 4 10
8000 µs 64 4 10
The settings must be stored in the data set of the b maXX 4000 contr
oller and the con-
troller must be booted again.
NOTE!
If cyclic communication is interrupted, e. G.. at restart of the bus the error/warning
Alive Counter or the error cyclic communication can occur.

Baumuller b maxx BM4400 Specifications

General

Brand	Baumuller
Model	b maxx BM4400
Category	DC Drives
Language	English