Differences

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--- ccgx:modbustcp_faq [2019-01-22 10:16] – external edit 127.0.0.1
+++ ccgx:modbustcp_faq [2019-08-15 12:27] – replace venus-device with GX device guy_stewart
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 ==== Introduction ====
-ModbusTCP is a feature on our [[venus-os:start|Venus-devices]] eg [[https://www.victronenergy.com/panel-systems-remote-monitoring/colorcontrol|Color Control GX]], and also the [[https://www.victronenergy.com/panel-systems-remote-monitoring/venus-gx|Venus GX]]. ModbusTCP is an industry standard protocol, that can be used to interface PLCs or other equipment with Victron products. For example to enable a heat pump when there is excess solar power, or create a fully integrated glass bridge on a yacht.
+ModbusTCP is a feature on our [[venus-os:start|GX devices]] eg [[https://www.victronenergy.com/panel-systems-remote-monitoring/colorcontrol|Color Control GX]], and also the [[https://www.victronenergy.com/panel-systems-remote-monitoring/venus-gx|Venus GX]]. ModbusTCP is an industry standard protocol, that can be used to interface PLCs or other equipment with Victron products. For example to enable a heat pump when there is excess solar power, or create a fully integrated glass bridge on a yacht.
+Through the ModbusTCP interface you can read and write date to the chargers, battery monitors, inverter/chargers and other products connected to the GX device. The unit-id combined with the register address is used as a device-selector: selecting for example from which device you want to read its battery voltage measurement.
 Besides reading this FAQ, make sure to also read the ModbusTCP section in our  [[https://www.victronenergy.com/upload/documents/Whitepaper-Data-communication-with-Victron-Energy-products_EN.pdf|Data communication whitepaper]].
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 | com.victronenergy.temperature | Temperature sensors <sup>(1)</sup> | 3300 to 3305 |
-(1): Only the Venus GX is provided with temperature sensor inputs. The battery temperature as measured by a sensor connected to a VE.Bus device is not available. And the battery temperature as measured by a sensor connected to a BMV battery monitor is available under the com.victronenergy.battery register set.
+(1): Check for compatible [[venus-os:start|GX devices]] (eg Venus GX) that provide temperature sensor inputs. The battery temperature as measured by a sensor connected to a VE.Bus device is not available. And the battery temperature as measured by a sensor connected to a BMV battery monitor is available under the com.victronenergy.battery register set.
 General note: not all list registers are available for each device. For example a BMV Battery Monitor has lots of readings: historical data such as maximum/minimum, for example. A canbus-connected lithium battery might not have those parameters available.
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 ==== Advanced debugging ====
-If all unit-id's and register-addresses have been checked and re-checked, and still the connection doesn't work, you could try looking at the modbustcp log file on the [[venus-os:start|Venus-device]].
+If all unit-id's and register-addresses have been checked and re-checked, and still the connection doesn't work, you could try looking at the modbustcp log file on the [[venus-os:start|GX device]].
 Follow these steps:
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