0.0–6553.5Vdc 
If  the  absolute  value  of  bus  voltage 
minus the reference value is bigger than 
P15.10,  it  will  switch  to  P15.08  and 
P15.09;  otherwise  it  is  P15.06  and 
P15.07. 
0: Digital input of the water-level control 
1:  AI1(the  water-level  signal  is  input 
through AI1, not supported currently) 
2:  AI2  (the  water-level  signal  is  input 
through AI2, not supported currently) 
3:  AI3  (the  water-level  signal  is  input 
through AI3, not supported currently) 
If the function code is 0, the water-level 
signal  is  controlled  by  the  digital  input. 
See 43 and 44 functions of S terminals 
in group P05 for detailed information.  If 
the full-water signal is valid, the system 
will  report  the  alarm  (A-tF)  and  sleep 
after  the  time  of  P15.14.  During  the 
alarm, the full-water signal is invalid and 
the system will clear the alarm after the 
time of P15.15. If the empty-water signal 
is valid, the system will report the alarm 
(A-tL)  and  sleep  after  the  time  of 
P15.16.  During  the  alarm,  the  empty 
-water  signal  is invalid  and  the  system 
will  clear  the  alarm  after  the  time  of