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05/02 AWB2528-1423GB
NET Network
Changing the write repeat rate, time interval
manually
Every 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 time interval which a device
requires is automatically determined using this data, to
ensure that all devices can send their messages. If a time
interval is to be increased, the value of the BUSDELAY: must
be set greater than zero.
Value “1” doubles the time interval, value “15” will
increase it by a factor of 16.
tpnew = tp x (1 + n)
tpnew = new time interval
tp = time interval determined by the network
n = value on BUSDELAY
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An extension of the time interval 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 time interval and the quantity of transferred
data.
The smaller the amount of data transferred, the faster the
reaction times of the system.
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An increase in the time interval is only useful during
commissioning. To ensure that the data for the power flow
direction is updated faster in the PC, a longer range for
this data is created on the network within this time
interval.