Control Model Comparison by Inverter Family
Feature
MOD GEN4
SPH GEN3
WIT TL3
SPF Off-Grid
TOU schedule control
9 slots
3 slots (AC charge)
Read-only
No TOU
Persistent mode changes
Yes
Yes
No (timed only)
Yes
Per-slot priority (Load/Battery/Grid)
Yes (9 slots)
Global only
N/A
N/A
Prerequisite gate required
3049 = Enabled
None
30100 = Enabled
None
Atomic multi-reg write (FC16)
Yes (start+end)
No (single reg)
Yes (VPP slot)
No (single reg)
Battery First ext. time slots
N/A (bit-packed)
6 extra slots (new)
N/A
N/A
Grid First ext. time slots
N/A (bit-packed)
9 extra slots (new)
N/A
N/A
Temporary override (timed)
No
No
Yes — 30407-30409
No
Register protocol
3000-range holding
1000-range holding
VPP 30000-range
0-range holding
Reversion risk without 3049
HIGH — firmware gate
LOW — cloud only
N/A (by design)
Low
v0.6.8b1 — new capabilities shown in green · red = limitation or prerequisite required