Delta OHM HD2013.3, Operating Manual

Page: 11 / 24

HD2013.3
- 11 -
V1.7
instrument.
RS485 communication parameters:
Command Reply Description
CMBn &| Sets the Baud Rate:

1200 if n=0

2400 if n=1
 4800 if n=2
 9600 if n=3

19200 if n=4

38400 if n=5

57600 if n=6
 115200 if n=7
Default : 19200 (n=4)
RMB & n| Reads Baud Rate setting
CMPn &| Sets parity and stop bits:

8N1 if n=0 [No parity, 1 stop bit]
 8N2 if n=1 [No parity, 2 stop bits]

8E1 if n=2 [Even parity, 1 stop bit]

8E2 if n=3 [Even parity, 2 stop bits]
 8O1 if n=4 [Odd parity, 1 stop bit]
 8O2 if n=5 [Odd parity, 2 stop bits]
The number of data bits is fixed to 8.
Default : 8E1 (n=2)
RMP & n| Reads the setting of parity and stop bits.
CMWn &| Sets waiting time after transmission with MODBUS-RTU
protocol:

Immediate reception if n=0 (violates protocol)
 Waiting 3.5 characters if n=1 (respects protocol)
Default : Immediate reception (n=0)
RMW & n| Reads the setting of waiting time after transmission with
MODBUS-RTU protocol.
Precipitation detection settings:
Command Reply Description
CRLRn &| Sets the resolution with which the percentage of dry
sensitive surface of the sensor is detected:

1% if n=0

0.1% if n=1
Default : 1% (n=0)
RRLR & n| Reads the resolution with which the percentage of dry
sensitive surface of the sensor is detected.
CRTn &| Sets the precipitation detection threshold to n value,
where n is the percentage of dry sensitive surface of the
sensor below which the instrument indicates that a pre-
cipitation is in progress.
If the 0.1% resolution is set, the value must be ex-
pressed in tenths (for example, write 970 to indicate
97.0%).
Default : 97 (=97% with 1% default resolution)
RRT & n| Reads the setting of the precipitation detection thresh-
old.