HD50
- 28 -
V1.4
6
MODBUS
The device general information can be read through the function code
0x2B/0x0E
:
•
Manufacturer (Delta OHM)
•
Model
•
Firmware version
The complete list of MODBUS registers is shown below. According to the device model,
some of the listed registers could not be present if not significant for that particular
model (e.g., CO
2
measurement will not be available if it is not measured by the data
logger). If you try to read a register that is not present, the instrument returns the
fixed value 32767. In case of doubt on the registers actually available in a particular
model, use the function "
Download the list of MODBUS registers of the device
" in-
cluded in the
Settings
sections of HD35AP-S software (see software instructions).
The following conventions have been used in the tables:
o
Type:
b
= bit,
B
= 8 bits (Byte),
W
= 16 bits without sign (Word),
SW
= 16 bits
with sign
o
(x10)
= decimal value expressed as an integer (e.g., if the content of the register
is 184, the value is to be intended as 18,4).
o
(x100)
= centesimal value expressed as an integer (e.g., if the content of the reg-
ister is 500, the value is to be intended as 5,00).
The commands for requesting units of measurement return an index according to the
correspondence indicated in the table below:
Indexes of the units of measurement
Index Unit of
meas.
Index Unit of
meas.
Index
Unit of
meas.
Index
Unit of
meas.
Index
Unit of
meas.
0 °C 13 inchHg 26 J/m
2
39 inch 52 l/min
1 °F 14 inchH
2
O
27 µJ/cm
2
40 counts 53 gallon/min
2 %UR 15 kgf/cm
2
28 V 41 mm/h 54 m
3
/min
3 g/m
3
16 PSI 29 mV 42 inch/h 55 m
3
/h
4 g/kg 17 m/s 30 mA 43 counts/h 56 µmol/(m
2
s)
5 mbar 18 km/h 31 ppm 44 mW/m
2
57 mm/day
6 bar 19 ft/s 32 Hz 45 m 58 kV
7 Pa 20 mph 33 % 46 s 59 A
8 hPa 21 knot 34 degrees
47 µW/lumen 60 kA
9 kPa 22 W/m
2
35 lux 48 dB
10 atm 23 µW/cm
2
36 m
2
/s
49 dBA
11 mmHg 24 Wh/m
2
37 g
(*)
50 kWh
12 mmH
2
O
25 kWh/m
2
38 mm 51 l/s 255 Not
defined
(*)
Gravity acceleration
Discrete Inputs
- Read-only parameters
Address Type
Discrete Input description
7
b
If 1, at least a quantity is in alarm.
Summary of Contents for HD50 14b7P TC
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Page 53: ...HD50 53 V1 4 NOTE ...
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