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Siemens
Standard application AHU
CE1P3977en_02
Building Technologies
Hardware overview
01.02.2010
4
Hardware overview
4.1 Basic controller (POL638x)
The exact designation of inputs / outputs in the program or HMI is available in the
point table in the appendix.
To connect external components to the process unit, these instructions must be
followed.
X1...X8
Connection instruction
Power supply
Digital inputs
Basis Document Siemens Climatix Control System
BDCX.100820.01GB
Page 15