Glossary-6
ET 200L, ET 200L-SC and ET 200L-SC IM-SC Distributed I/O Device
EWA 4NEB 780 6009-02c
S
A slave cannot exchange data with a
³
master unless requested by the latter
to do so.
Examples of slaves are all DP slaves, such as ET 200B, ET 200L and
ET 200M.
The Smart Connect SC enables the fine adjustment of input and output chan-
nels to the process. The ET 200L-SC can be upgraded by means of a Smart
Connect.
SYNC is a control command of the DP master to a group of DP slaves.
By means of the SYNC control command, the DP master causes the DP slave
to freeze the statuses of the outputs at their current value. In the subsequent
frames, the DP slave saves the output data, but the statuses of the outputs
remain unchanged.
After each SYNC control command, the DP slave sets the outputs it has
saved as output data.
The outputs are not periodically updated again until the DP master sends the
UNSYNC control command.
T
A file required by the configuration software (e.g. COM ET 200 Windows)
for configuring a DP slave. The type file contains definitions of the slave-
specific properties, such as the number of inputs and outputs, the number of
diagnostic bytes, and SYNC capability.
U
Not having a conductive connection to
³
ground.
Slave
Smart Connect SC
SYNC
Type file
Ungrounded
Glossary