B-7
ET 200U Distributed I/O Station
EWA 4NEB 812 6087–02b
Station number Each ET 200 node must be assigned a station number.
The programmer or ET 200 handheld unit are addressed by means of
station number “0”;
A master has either station number “1” or “2”;
The station numbers for the slave stations are in the range from 3 to
124. Exception: The ET 200B is assigned a station number in the
range from 3 to 99.
Subindex Access index for an element of an array.
SYNC is a ³ control command.
Using this control command, the DP master can “freeze” the outputs to
their actual value. The output data of the following frames are stored,
but the output statuses are not changed. The outputs are updated again
only when the DP master once more sends the SYNC control com-
mand.
T
Terminating resistor Resistance for matching to the impedance of a bus cable; terminating
resistors are generally required for terminating cables or segments.
U
Ungrounded configuration Configuration without any electrical connection to ground. In most
cases, the fault currents are discharged via an RC element.
Glossary
To Next Page
Loading...
