Differences

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--- ess:ess_mode_2_and_3 [2022-12-07 14:14] – [2.2 Accessing the control points] iburger
+++ ess:ess_mode_2_and_3 [2024-10-14 15:20] (current) – [2.1 Available control points] iburger
@@ Line 42: / Line 42: @@
 ==== 2.1 Available control points ====
-=== a) Grid power setpoint - Modbus-TCP register 2700 ===
+Please note that the power setpoint register changed in Venus 3.50. Prior to Venus 3.50, the power setpoint would be written to register 2700 or 2703 instead. While this is still supported, it is recommended that future implementations use the 32-bit setting at registers 2716 and 2717 to avoid constantly logging the new setpoint to VRM, and wearing the flash on the GX-device with repeated writes.
+=== a) Grid power setpoint - Modbus-TCP register 2716  ===
+For venus versions before 3.50, use register 2700 instead.
   * Positive: take power from grid.
   * Negative: send power to grid.
-  * Default: 30 W.
+  * Default: 50 W.
-  * This register has range -32768W to 32767W (scale factor=1). Use register 2703 for a larger range (scale factor=0.01).
+  * Note that register 2700 has range of -32768W to 32767W (scale factor=1). On venus versions before v3.50, use register 2703 for a larger range (scale factor=0.01). On Venus 3.50 and later, use register 2716-2717, which is a 32-bit value.
-=== b) Enable/Disable charge - Modbus-TCP register 2701 ===
+=== b) Enable/Disable charge - Modbus-TCP register 2701 (deprecated in favour of 2705) ===
   * 0: disable charging. This setting may be used for time shifting. For example by disabling charging the battery when feeding back to the grid is profitable, and leaving battery capacity for later.
   * 100: unlimited charging. Battery, VEConfigure settings, and BMS permitting. Use value 100 here instead of 1 because this setting was originally designed to be used as a percentage.
-Note that this setting has a higher priority than the //Grid power setpoint//.
+Notes:
+  * This setting is deprecated and only works when DVCC is disabled. It is retained for backwards compatibility only. Use register 2705 instead to control battery charging.
+  * This setting has a higher priority than the //Grid power setpoint//.
-=== c) Enable/Disable inverter - Modbus-TCP register 2702 ===
+=== c) Enable/Disable inverter - Modbus-TCP register 2702 (deprecated in favour of 2704) ===
   * 0: disable inverter
   * 100: enabled inverter. Use value 100 here instead of 1 because this setting was originally designed to be used as a percentage.
-Note that this settings has a higher priority than the //Grid power setpoint//.
+Notes:
+  * This setting is deprecated and only works when DVCC is disabled. It is retained for backwards compatibility only. Use register 2704 instead to control battery discharge.
+  * This settings has a higher priority than the //Grid power setpoint//.
 === d) Maximum inverter power - Modbus-TCP register 2704 ===
@@ Line 66: / Line 74: @@
 === e) DVCC maximum system charge current - Modbus-TCP register 2705 ===
-  * -1: No limit. Solar Chargers and the Multi will charge to their full capacity or individual configurd limits.
+  * -1: No limit. Solar Chargers and the Multi will charge to their full capacity or individual configured limits.
   * Any positive number: Maximum combined current in Ampere for battery charging. This limits the solar chargers and the multi, and takes loads into account. Solar chargers take priority over the Multi.