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Tecomat TC600
TXV 138 08.02
46
9.5.3
Connection of Binary Inputs
PLC binary inputs are led out to connectors of terminal boards marked as
DIGITAL INPUTS. Input switches are connected between the input connec-
tor and the common connector of the group. In Fig. 9.17, scheme of con-
nection of switches and the power supply to one group of inputs of TC601 to
TC607 (TC621 to TC626) is indicated.
Fig. 9.17 Example of connection of switches to binary inputs of the PLC of
the TC600 series
Supply voltage of a group of switches may be connected in arbitrary po-
larity, within the group individual inputs must be poled identically.
For fitting and marking of terminal boards of binary inputs of individual
PLC types see Article 9.4.