SunSaver MODBUS Specifications

ManualsBrandsMORNINGSTAR ManualsSolar System AccessoriesSunSaver MPPT-15L Charge controller MPPT 12 V, 24 V 15 A

connected) +127

0x0011 18 charge_state Charge state -

0x0012 19 array_fault Array fault bitfield -

0x0013 20 Vb_f Battery voltage, slow filter (τ ≈ 25s) V n·100·2

-15

0x0014 21 Vb_ref Battery regulator reference voltage V n·96.667·2

0x0015 22 Ahc_r_HI Ah charge resetable, HI word Ah n·0.1

0x0016 23 Ahc_r_LO Ah charge resetable, LO word -

0x0017 24 Ahc_t_HI Ah charge total, HI word Ah n·0.1

0x0018 25 Ahc_t_LO Ah charge total, LO word -

0x0019 26 kWhc kWh charge (resetable?) kWh n·0.1

0x001A 27 load_state Load state -

0x001B 28 load_fault Load fault bitfield -

0x001C 29 V_lvd load current compensated LVD voltage V n·100·2

-15

0x001D 30 Ahl_r_HI Ah load resetable, HI word Ah n·0.1

0x001E 31 Ahl_r_LO Ah load resetable, LO word -

0x001F 32 Ahl_t_HI Ah load total, HI word Ah n·0.1

0x0020 33 Ahl_t_LO Ah load total, LO word -

0x0021 34 hourmeter_HI hourmeter, HI word h 0 to (2

-1)

0x0022 35 hourmeter_LO hourmeter, LO word -

0x0023 36 alarm_HI alarm bitfield – HI word -

0x0024 37 alarm_LO alarm bitfield – LO word -

0x0025 38 dip_switch dip switch settings at power on

switch[1..8] in bits[0..7]

0x0026 39 led_state SOC LED state -

0x0027 40 Power_out Charge output power W n·989.5·2

0x0028 41 Sweep_Vmp Array Vmp found during sweep V n·100·2

-15

0x0029 42 Sweep_Pmax Arrap Pmax(output) found during sweep W n·989.5·2

0x002A 43 Sweep_Voc Array Voc found during sweep V n·100·2

-15

0x002B 44 Vb_min_daily Vb minimum voltage – daily V n·100·2

-15

0x002C 45 Vb_max_daily Vb maximum voltage – daily V n·100·2

-15

0x002D 46 Ahc_daily Ah charge - daily Ah n·0.1

0x002E 47 Ahl_daily Ah load - daily Ah n·0.1

0x002F 48 array_fault_daily Array fault bitfield - daily -

0x0030 49 load_fault_daily Load fault bitfield - daily -

0x0031 50 alarm_HI_daily alarm bitfield – daily, HI word -

0x0032 51 alarm_LO_daily alarm bitfield – daily, LO word -

0x0033 52 vb_min minimum battery voltage V n·100·2

-15

0x0034 53 vb_max maximum battery voltage V n·100·2

-15

0x0038 57 lighting_should_

be_on

In lighting mode, if non-zero, the light output

should be on (independent of LVD, etc.). (v08

and later code)

0x0039 58 va_ref_fixed fixed Vmp if set (overrides % if both set) V n·100·2

-15

0x003A 59 va_ref_fixed_pct Vmp = % of Voc if set (0 or 0xff disables) %

n*100*2

-8

Due to MODBUS® message length limits, it is unlikely that all 128 points of sweep data can be returned in

one request. Request sweep data in two separate requests.