User Manual

easy-NET network
254
08/04 AWB2528-1423GB
Pause time, changing the write repetition rate
manually
Every easy-NET network connection automatically
determines the number of stations which are active on the
network, the baud rate which is used and the total number
of bytes which are transmitted. The minimum pause time
which a device requires is automatically determined using
this data in order to ensure that all devices can send their
messages. If a pause time is to be increased, the value of the
BUSDELAY: must be set greater than zero.
Value “1” doubles the pause time, value “15” will increase
it by a factor of 16.
t
pnew
= t
p
x (1 + n)
t
pnew
= new pause time
t
p
= pause time determined by the network
n = value on BUSDELAY
h
An extension of the pause time means that fewer
messages (inputs, outputs, bit data, word data) are
transferred per time unit.
The reaction speed of the entire controller depends on the
baud rate, the pause time and the quantity of transferred
data.
The smaller the amount of data transferred, the faster the
reaction times of the system.
h
An increase in the pause time is only useful during
commissioning. To ensure that the data for the power flow
display is updated faster in the PC, a longer range for this
data is created on the network within this pause time.