Connector coding
Siemens supplies a series of coding elements (coding sliders) with each Terminal Module
TM17 High Feature. To code a connector, you must insert at least one coding slider and cut
off at least one coding projection on the connector:
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Figure 3-6 Connector coding - procedure (same as for TM 15)
To avoid incorrect wiring, unique connector coding schemes for the I/O connectors X520,
X521, and X522 may be defined. Examples of possible patterns:
● Different coding between the 3 plugs of a component (i.e., X520, X521, and X522).
● Different components are coded differently.
● Identical components on the same machine are coded differently (e.g. several TM17 High
Feature components).
Terminal Module TM17 High Feature
3.6 Electrical Connection
TM15 / TM17 High Feature Terminal Modules
48 Manual, 11/2016