ABB CL Series, Applications Manual

Page: 330 / 428

Configuration of the
CL-NET network
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1SVC 440 795 M1100
Send each change on the inputs/outputs (SEND IO)
The SEND IO function should be used if you wish to send any
change in input or output status immediately to all other
network stations. SEND IO should be activated if intelligent
stations have read access to the inputs and outputs of other
stations (2I 02, 8Q 01, etc.).
This means that the quantity of messages on the network
can increase significantly.
SEND IO å
= Factory default setting
Automatic change of the RUN and STOP mode
REMOTE RUN should be activated if stations 2 to 8 are to
automatically follow the mode change of station 1 during
operation.
The following is of utmost importance during
commissioning!
SEND IO å
h If high-speed counters are used, the SEND IO function
should be deactivated. Otherwise the input data is written
very rapidly onto the network as they change
continuously, leading to unnecessary loading of the
network.
If intelligent devices are required to exchange bit
information, it should be implemented via RN and SN.
h Input and output devices must always have SEND IO
activated, to ensure that station 1 always receives up-to-
date input and output data.
h Intelligent stations with display only follow the operating
mode change when the display is showing the status
display or a text.