HD2013.3
- 18 -
V1.7
(*)
The Instrument serial number has 8 digits. Two consecutive registers must be accessed to
read the number. The register with lower address contains the most significant 4 digits.
Coils:
Address
Description
Format
0
Set 1 to restore the factory configuration. Bit zeroing is automatic.
Bit
1
Enable configuration change:
0=no (default), 1=yes.
The changes to
Coils
and
Holding Registers
will be accepted only
if this register is set to 1.
Bit
2
Sets waiting time after transmission with MODBUS-RTU protocol:
0=immediate reception (default);
1=waiting 3.5 characters.
Bit
3
Set 1 to calibrate the instrument. Bit zeroing is automatic.
Set 1 only if the sensor sensitive surface is completely dry.
Bit
Holding Registers:
Address
Description
Format
0
RS485 Baud Rate:
0=1200;
1=2400;
2=4800;
3=9600;
4=19200 (default);
5=38400;
6=57600;
7=115200.
16-bit Integer
1
RS485 parity and stop bits:
0=8N1;
1=8N2;
2=8E1 (default);
3=8E2;
4=8O1;
5=8O2.
[N=no parity, E=even parity, O=odd parity]
16-bit Integer
2
Instrument address for the MODBUS-RTU protocol (1…247, de-
fault=1).
16-bit Integer
3
Heating operating mode:
0= Manual;
1= Always on;
2= Always off;
3= Automatic (default).
If the manual mode is set, the heating power set in the next reg-
ister is used.
16-bit Integer
4
Heating power for the manual operating mode as a percentage
of the maximum power (default=50%).
16-bit Integer
5
Precipitation detection threshold as a percentage (x10 if the
resolution is 0.1%) of dry sensitive surface of the sensor below
which the instrument indicates that a precipitation is in progress
(default=97%).
16-bit Integer
6
Hysteresis (x10 if the resolution is 0.1%) of the precipitation de-
tection threshold (0…20%, default=1%).
16-bit Integer
