SunSaver MPPT MODBUS Document

TriStar MPPT MODBUS Document v10
http://www.morningstarcorp.com 3/26 05 Dec 2011
Supported MODBUS Functions
Read Holding Registers (0x03) and Read Input Registers (0x04)
RAM
PDU
Addr
Logical
Addr
Variable name
Variable description
Units
Signed
Scaling or Range
Scaling Values
0x0000
1
V_PU hi
Voltage scaling, whole term
V
-
0x0001
2
V_PU lo
Voltage scaling, fractional term
-
-
0x0002
3
I_PU hi
Current scaling, whole term
A
-
0x0003
4
I_PU lo
Current scaling, fractional term
-
-
0x0004
5
ver_sw
Software Version
-
-
0x0005 –
0x0017
6-9
RESERVED
Filtered ADC
0x0018
25
adc_vb_f_med
Battery voltage, filtered (τ ≈ ?s)
V
√
n·V_PU·2
-15
0x0019
26
adc_vbterm_f
Batt. Terminal voltage, filtered (τ ≈
?s)
V
√
n·V_PU·2
-15
0x001A
27
adc_vbs_f
Battery Sense voltage, filtered (τ ≈
?s)
V
√
n·V_PU·2
-15
0x001B
28
adc_va_f
Array voltage, filtered (τ ≈ ?s)
V
√
n·V_PU·2
-15
0x001C
29
adc_ib_f_shadow
Battery current, filtered (τ ≈ ?s)
A
√
n·I_PU·2
-15
0x001D
30
adc_ia_f_shadow
Array current, filtered (τ ≈ ?s)
A
√
n·I_PU·2
-15
0x001E
31
adc_p12_f
12 volt supply, filtered (τ ≈ ?s)
V
√
n·18.612·2
-15
0x001F
32
adc_p3_f
3 volt supply, filtered (τ ≈ ?s)
V
√
6.6·2
-15
0x0020
33
adc_pmeter_f
MeterBus voltage, filtered (τ ≈ ?s)
V
√
n·18.612·2
-15
0x0021
34
adc_p18_f
1.8 volt supply, filtered (τ ≈ ?s)
V
√
n·3·2
-15
0x0022
35
adc_v_ref
reference voltage
V
√
n·3·2
-15
Temperatures
0x0023
36
T_hs
Heatsink temperature
C
√
-127 to +127
0x0024
37
T_rts
RTS temperature (0x80 =
disconnect)
C
√
-127 to +127
0x0025
38
T_batt
Battery regulation temperature
C
√
-127 to +127
Status
0x0026
39
adc_vb_f_1m
Battery voltage, filtered (τ ≈ 1min)
V
√
n·V_PU·2
-15
0x0027
40
adc_ib_f_1m
Charging current, filtered (τ ≈
1min)
A
√
n·I_PU·2
-15
0x0028
41
vb_min
Minimum battery voltage
V
√
n·V_PU·2
-15
0x0029
42
vb_max
Maximum battery voltage
V
√
n·V_PU·2
-15
0x002A
43
hourmeter_HI
hourmeter, HI word
h
-
0x002B
44
hourmeter_LO
hourmeter, LO word
h
-
0x002C
45
fault.all
Controller faults bitfield
-
-
0x002D
46
reserved
0x002E
47
alarm_HI
alarm bitfield – HI word
-
-
0x002F
48
alarm_LO
alarm bitfield – LO word
-
-
0x0030
49
dip.all
DIP switch positions bitfield
-
-
0x0031
50
led.state
State of LED indications
-
-
Charger
0x0032
51
charge_state
Charging stage
-
-
0x0033
52
vb_ref
Target regulation voltage
V
√
n·V_PU·2
-15