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V2 AC500 Hardware 1-9 System data AC500 / Issued: 05.2007
Step 3: Mount I/O Terminal Unit (TU515, TU516, TU531 or TU532)
Figure: Assembly of the I/O Terminal Unit (TU515, TU516, TU531 or TU532)
The I/O Terminal Unit is snapped into the DIN rail in the same way as the Terminal Base. Once secured
to the DIN rail, slide the I/O unit to the left until it fully locks into place creating a solid mechanical and
electrical connection.
Altogether 7 I/O Terminal Units can be combined with the Terminal Base.
If both of the following conditions are fulfilled, max. 10 I/O Terminal Units can be combined with the
Terminal Base:
- PS501 as of version V1.2
- CPUs as of firmware V1.2.0
1 ... 7 (10) *)
Figure: Maximum configuration (1 Terminal Base plus 7 I/O Terminal Units)
*) If both of the following conditions are fulfilled, max. 10 I/O Terminal Units can be combined with the
Terminal Base:
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