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Siemens  Standard application AHU  CE1P3977en_02 
Building Technologies  Appendices  01.02.2010 
Hardware assignment of extension module POL955 with address 1 
IO  Function  IO type  Connection   Comments 
Digital outputs 
 
DO11    Digital  T3 (Q13,Q14)   
DO12    Digital  T3 (Q23,Q24)   
DO13    Digital  T3 (Q33,Q34)   
DO14    Digital  T4 (Q43,Q44)   
Analog outputs 
 
AO11    0...10 V DC  T5 (Y1,M)   
AO12    0...10 V DC  T5 (Y2,M)   
Universal inputs / outputs 
 
X11      T1 (X1,M)   
X12      T1 (X2,M)   
X13      T1 (X3,M)   
X14      T1 (X4,M)   
X15      T2 (X5,M)   
X16      T2 (X6,M)   
X17      T2 (X7,M)   
X18      T2 (X8,M)   
 
Universals I/Os X11 – X18 can be configured as inputs (digital, Ni1000, Pt1000, 
NTC10K, 0-10V DC) or outputs 0-10V DC. 
 
Hardware assignment of extension module POL955 with address 1 
IO  Function  IO type  Connection   Comments 
Digital outputs 
 
DO21    Digital  T3 (Q13,Q14)   
DO22    Digital  T3 (Q23,Q24)   
DO23    Digital  T3 (Q33,Q34)   
DO24    Digital  T4 (Q43,Q44)   
Analog outputs 
 
AO21    0...10 V DC  T5 (Y1,M)   
AO22    0...10 V DC  T5 (Y2,M)   
Universal inputs / outputs 
 
X21      T1 (X1,M)   
X22      T1 (X2,M)   
X23      T1 (X3,M)   
X24      T1 (X4,M)   
X25      T2 (X5,M)   
X26      T2 (X6,M)   
X27      T2 (X7,M)   
X28      T2 (X8,M)   
 
Universals I/Os X21 – X28 can be configured as inputs (digital, Ni1000, Pt1000, 
NTC10K, 0-10V DC) or outputs 0-10V DC. 
 
 
Extension module 1 
Note 
Extension module 2 
Note 
Basis Document Siemens Climatix Control System
BDCX.100820.01GB
Page 231