Installation Manual
16 
ChargeMaster Plus 12/75-3, 12/100-3, 24/40-3, 24/60-3 – User and Installation Manual 
4  SETTINGS 
Adjustment of the settings of the ChargeMaster 
Plus can be made in two different ways: 
•  By means of DIP switches. 
•  From a laptop or notebook connected to the 
ChargeMaster Plus via a USB Interface. Some 
settings can only be changed in this way. 
CAUTION! 
Invalid  settings  of  the 
ChargeMaster  Plus  can  cause 
serious  damage  to  your  batteries 
and/or  the  connected  load!  Only 
authorized  personnel  may  adjust 
settings. 
When required,  the ChargeMaster Plus  can  be 
restored to factory settings (see section 0). 
4.1  DIP switch settings 
Use  a  small  screwdriver  to  carefully  set  the 
required settings. 
Figure 4: DIP switches (factory settings) 
DIP switch 1 = CZone (0) or MasterBus (1) 
network. 
DIP switch 2 = MasterBus powering off (0) or 
on (1) 
DIP switches 3 to 10 are either used as CZone 
address or for MasterBus battery and 3
rd
 output 
settings. 
In a CZone network: 
DIP  switch  1  must  always  be  set  to  the  OFF 
position (0). 
DIP  switch  2  must  always  be  set  to  the  OFF 
position (0). 
DIP  switches  3  to  10  must  match  the  unique 
address  used  in  the  CZone  network;  the 
dipswitch.  See  the  CZone  Configuration  Tool 
Instructions manual for more information. 
In a MasterBus network: 
DIP  switch  1  must  always  be  set  to  the  ON 
position (1). 
DIP switch 2 is MasterBus Powering ON (1) or OFF 
(0). 
DIP  switches  3  to  5  are  used  for  battery  type 
selection: 
DIP switch 
3 
4 
5 
MasterBus settings (Flooded)
1
0 
0 
0 
Flooded (fixed) 
0 
0 
1 
AGM (fixed) 
0 
1 
0 
Gel (fixed) 
0 
1 
1 
Lithium-ion (fixed) 
1 
0 
0 
Constant voltage (13,25/26,50V)
2
1 
1 
1 
1
 If all DIP switches are in the OFF position (0 ), the 
settings suit a Flooded battery but can be changed 
in MasterAdjust. 
2 
Constant voltage has no temperature compensation
DIP switches 6 and 7 are used for DC 3 IN/OUT: 
DIP switch 
6 
7 
12V battery 
1 
Current limit 10A 
1 
These  two  options  cover  the  most  used 
applications. Other options can be selected via 
the configuration tool. 
See section 5.4 for more information on charge 
voltage settings and section 0 for DC 3 IN/OUT. 
4.2  MasterBus configuration 
MasterBus  is  a  CAN  based  data  network  for 
communication  between  Mastervolt  devices. 
When the ChargeMaster Plus is connected, open 
MasterAdjust on a Windows laptop or notebook 
connected  to  the  MasterBus  network  via  a 
MasterBus USB interface. MasterAdjust software 
is available as free to download software on the 
Mastervolt  website:  www.mastervolt.com.  This 
tool runs on a Windows laptop or notebook. 










