If the ambient temperature was changed rapidly before installation, wait for at least 60 minutes before
first switching it on.
Attention:
RS-8 interfaces are galvaniclly separated from one another and galvanically separated
from power supply. Do not connect interface and signals together.
After switching on the clock performs a display test. It lights all segments and increases their brightness.
After reaching the maximum brightness, the clock proceeds to normal operation.
Attention:
If during the cooperation of clock and P8 transducer, the clock displays time instead of
temperature or humidity.
6. Configuration
The digital DLZ clock can be set through the RS8 interface, using the MODBUS RTU standard. The
default
transmission parameters
of the clock are as follows:
l
Address: ;
l
Mode: RTU 8n;
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Bit rate: 9600 bps.
The configuration can be modified by writing the required value into the clock registers. The registers
map is described in the next charter. Any program enabling to change the value written in the device’s
registers and working in the MODBUS RTU standard can be used to change the configuration set-
tings.
Modifiable basic settings are as follows::
l
The connection of the panel and the computer or master device parameters;
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The transmission parameters between the panel and the P8 transducer.
l
The brightness level for day and night, and the hours of day- and night time changes.
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The display mode - determines which settings are to be displayed by the clock.
l
The time of displaying the parameter - determines the time of displaying the value of the
individual parameter.
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Current time and date.
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The setting of the P8 connection.
The DLZ clocks can display: time, date, temperature and humidity. The user can choose one of the
following configurations to display:
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Time only.
l
Date only.
l
Time and temperature.
l
Time, temperature and humidity.
l
Time, date, temperature and humidity.
7. Interface
DLZ clocks contain serial interfaces, working according to the MODBUS RTU standard. One interfa-
ce is the master in the MODBUS network and it is used to connect the humidity and temperature con-
verter P8. The other is the slave in the network, and is used to connect the clock to the master system,
for example the computer. The slave interface makes it possible to set up and read values from the
P8 converter.
The DLZ clock is equipped with MODBUS functions , 6 and .