Connection of the configurable digital inputs/outputs
The following figure shows the connection of the configurable digital input/output DC16 and
DC17. DC16 is connected as an input and DC17 is connected as an output. Proceed with the
configurable digital inputs/outputs DC18 to DC23 in the same way.
Fig. 74: Connection of configurable digital inputs/outputs to the module
CAUTION!
Risk of influences to the connected sensors!
Some sensors may be influenced by the deactivated module outputs of DA501.
If the inputs are used as fast counter inputs, connect a 470
W
/ 1 W resistor in
series to inputs DC16/DC17.
Connection of resistance thermometers in 2-wire configuration to the analog inputs
When resistance thermometers (Pt100, Pt1000, Ni1000) are used, a constant current must flow
through them to build the necessary voltage drop for the evaluation. For this, the module DA501
provides a constant current source which is multiplexed over the max. 4 analog input channels.
The following figure shows the connection of resistance thermometers in 2-wire configuration to
the analog input AI0. Proceed with the analog inputs AI1 to AI3 in the same way.
Device specifications
I/O modules > Digital/Analog I/O modules
2022/01/31
3ADR010278, 3, en_US
554