Victron energy Venus GX Manual page 41

Item Default Description
Normally Select the polarity of the relay on the back of the CCGX. 'Normally open' or 'Normally closed'. (Note that setting it to
Polarity
open normally closed increases the CCGX power draw.)
Services
This setting enables the ModbusTCP service.
ModbusTCP Off
VRM two-way
No Enable remote configuration and firmware updates. VE Power Setup manual
communication
When using a VE.Bus system, it is possible to configure the severity of problems on the VE.Bus
system that should cause a notification to show up on the CCGX (and make it beep):
Disabled: The CCGX will never beep or show a notification
Alarm only: The CCGX will only beep and a show a notification when the VE.Bus system
switched off in an alarm condition.
Enabled (default): The CCGX will beep and show a notification
When all done, don't forget to change the access level to user when required.
2.2 Battery State of Charge (SOC)
2.2.1 Which device should I use for SOC calculation?
There are three products types that calculate State Of Charge (SOC). The CCGX itself does not
calculate SOC, it only retrieves it from the connected devices.
The three products that calculate SOC are:
1. Battery Monitors, such as the BMVs, the Lynx Shunt, or the Lynx Ion BMS
2. Multi and Quattro inverter/chargers
3. Batteries with built-in battery monitor and a (mostly CAN bus) connection to the CCGX.
When to use what?
If you have a battery with build-in battery monitor, such as a BYD or Freedomwon battery; its easy.
Use that.
If not, then the options depend on the type of system:
1. If the MultiPlus or Quattro inverter/charger is the only source of charge to the batteries and the only
draw then it can function as a basic battery monitor because it counts what went in and counts what
comes out. No need for a dedicated battery such as the BMV.
2. If the systems consists of an inverter/charger, MPPTs and a GX device, then there is still no need to
add a dedicated battery monitor.
3. For any other system types, such as a boat or vehicle with DC lights and other loads, a dedicated
battery monitor will be required.
2.2.2 The different solutions explained in detail
(A) Battery and Multi or Quattro (a typical backup system)