Guidelines For Installing Series 505 Modules - Siemens SIMATIC TI525 Hardware And Installation Manual

3.6.2

Guidelines For Installing Series 505 Modules

The Series 505 I/O, base controllers, and PLCs are all open-card modules in
double Eurocard design*. The power supply is a partially encased module in
double Eurocard design. Follow the guidelines in the following paragraphs
when inserting or removing the modules.
Do not insert or remove modules while power is enabled
to the PLC. Modules may be damaged if inserted while
power is on, and memory may be lost if the PLC is
removed while power is on.
* System 505 components are compatible with International standards double-Eurocard (DIN standard 41494)
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Hardware and Installation User Manual