Siemens Simatic S7-300 - Page 196

Priniples of analog value processing
4.7 Connecting loads/actuators to analog outputs
S7-300 Automation System Module data
4-22 Manual, 08/2006, A5E00105505-04
2-wire connection of loads to a voltage output of a non-isolated module
Wire the loads to the Q
V
terminals and to the reference point of measuring circuit M
ANA
.
Connect terminal S+ to Q
V
and terminal S to M
ANA
in the front connector.
On the 2-conductor connection, the line resistances are not compensated.
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Figure 4-18 2-wire connection of loads to the voltage output of a non-isolated analog module
See also
Connecting loads/actuators to analog outputs (Page 4-20)