Output Circuits Construction; Signals On A Terminal Block Connector - CS-Lab CSMIO/IP-A Manual

4.7.1

Output circuits construction

As you can see in the scheme, every output
is optically isolated. The outputs are divid-
ed, four in each group.
Each group is controlled by specialized
integrated circuit VNQ860. These circuits
work in PNP logic so the high state (+24V)
is the active state.
VNQ860 circuits are not supplied by the
same source as CSMIO/IP. If they were then
the opto-isolation wouldn't have much
sense. Therefore we must remember to
supply the power to every group of outputs
that we use.
If we do not care about separation of the CSMIO/IP Controller power supply and digital outputs potentials
and we want to use one power supply source then we can connect together power supply of all the groups
(pins 1, 4, 7, 10) and connect to +24V of controller's power supply. Then of course we have to also connect
power return lines, 0V (pins 14, 17, 20, 23) to GND of CSMIO/IP power supply.
4.7.2

Signals on a terminal block connector

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