Differences

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--- venus-os:mfd-raymarine [2023-03-02 09:19] – [7. NMEA 2000] mbosma
+++ venus-os:mfd-raymarine [2023-04-13 13:57] – [7. NMEA 2000] mvader
@@ Line 87: / Line 87: @@
   * J1939 - AC data
-When the NMEA2000/STNG network has GPS data the GX device sees this as a GPS source and is able to use the GPS position in VRM.
+When the NMEA2000/STNG network has GPS data, the GX device sees this as a GPS source and is able to use the GPS position in VRM.
-=== 7.2. LightHouse 4.1.75 and newer ===
+=== 7.2. Instancing requirements when using Raymarine ===
+Fluid instancing details:
+    * Raymarine i70: max number of tank levels is 5; fluid instance 0-4.
+    * Raymarine i70s: max number of tank levels is 5; fluid instance 0-4.
+    * Axiom MFDs: per Lighthouse version 4.1.75, a maximum of 16 tanks can be connected; fluid instance 0-15.
+==== LightHouse 4.1.75 and newer versions ====
 As of LightHouse version 4.1.75, the battery instances no longer need to be unique. This means that you can leave the battery instance to its default value, which is typically set to 0. The batteries are automatically detected by the Axiom display.
-=== 7.3. Before LightHouse 4.1.75 ===
+==== LightHouse 4.1.74 and prior versions ====
 If there are more than 1 (for example) SmartShunts in the NMEA2000 network, or a Solar Charger and a SmartShunt, or any other device that transmits the same type of PGNs, then the Data instances of those PGNs need to changed to make each data instance unique.
@@ Line 98: / Line 106: @@
 See here for how to do that: [[https://www.victronenergy.com/live/ve.can:changing_nmea2000_instances|Changing NMEA2000 Instances]], section Data instances. This requires an [[https://actisense.com/products/ngt-1-nmea-2000-to-pc-interface/|Actisense NGT-1 NMEA to USB interface]].
-**Note**: this requirement of data instances being globally unique for a PGN is specific to Raymarine. Other brands do not require this. And, although perhaps besides the point, also the NMEA2000 standard does not require it. More specifically, it says: "Data instances shall be unique in the same PGNs transmitted by a device. Data instances shall not be globally unique on the network.".