~
5
~
NOVATEK-ELECTRO
ЕТ-485
The unit has a standard plastic case, which can be attached to the DIN-rails with the width of 35 mm. The unit
drawing, together with the overall and setting dimensions, is provided in Figure 1.
Figure 1
– Overall dimensions of the unit
3.1.2. Display and control
The front panel of
ЕТ-485 is provided in Figure 2.
1
–
Reset button
"R"
(the
«R»
reset button (is under the body
and accessible for pressing through the opening in the body)
is designed to restart the unit or factory reset.
2
– Power indicator
«Power»
is activated if supply voltage is available.
3
– Error indicator
«Error»
warns about errors (to include format
errors of incoming data packages).
4
– Indicator
«RS-485»
is activated while waiting a reply from the unit in
the Modbus network; is flashing while data exchange over the
Modbus network.
5
– Indicator
«Ethernet»
is activated when connected to the
Ethernet network; is flashing while data exchange over the
Ethernet network.
Figure 2
– Front panel of ET-485
3.2. FUNCTIONING
Simplified structural diagram of the unit is provided in Figure 3.
32-digit RISC-processor with ARM architecture provides data routing between the Modbus RTU/ASCII
(RS-485) network and Ethernet (10base-T/100base-T) network. The operating speed and availability of channels for
direct access to the memory allows to process the high-speed data flow. Indicators provide information on the
connection status and data transfer over the Modbus and Ethernet networks.
The "Reset" button allows of restart the unit, without switching it off the mains, or do a factory reset:
to do a factory reset
– press and hold down the reset button
"R"
for 8 seconds;
"Error"
indicator shall be
activated in 2 seconds; the unit shall be restarted and the indicator
"RS-485"
shall be activated and deactivated
after 8 seconds of holding down the button; release the
"R"
button;
to reset the unit while saving user configurations
– press and hold down the reset button
"R"
; release the
"R"
button when
"Error"
indicator shall become activated.
