4. Interfaces
DEPOLOX® 400 M
28
EN
4.
Interfaces
4.1
USB interface
The electronics module is equipped internally
with a USB interface. It is used to update the
firmware via USB stick (chapter 6.5) or for use
as a data logger via USB stick.
If a memory stick (W2T866279) is perman-
ently installed in the USB port, monthly
archive files are saved in CSV format. All mea-
surements, controller outputs and states of
the digital inputs are saved every two minutes.
Proceed as follows to create data backup:
1 De-energize the electronics module.
2 Remove the housing cover.
3 Remove the USB stick.
4 Copy the archive files.
5 Reinsert the USB stick.
6 Fit the housing cover again.
7 Switch the electronics module on again.
Fig. 1
Detail of PCB - USB interface
4.2
RS485 interface
The RS485 interface is used for data transfer
to higher-level control systems such as the
Process Monitoring system or other systems
that support the Wallace & Tiernan RS485
protocol. For more detailed information,
please refer to the operating manual “RS485
interface.” You can request this operating
manual from us or download it from our
homepage.
The RS485 interface is electrically isolated. It
has four integrated terminals, a terminating
resistor R
t
and balancing resistors R
u
and R
d
for incorporation into a Wallace & Tiernan bus
system.
Fig. 2
Detail of PCB - RS485 interface
A DIP switches for activating the resistors:
DIP switch 1 (left): Balancing resistor R
u
DIP switch 2 (center): Terminating resistor
R
t
DIP switch 3 (right): Balancing resistor R
d
B
Terminals, RS485 interface
4.3
Ethernet interface
The electronics module has two integrated
Ethernet interfaces (ETH 1 and ETH 2). They
are connected internally via an Ethernet
switch. The device has an MAC address. The
MAC address is displayed in the menu “Infor-
mation”. The installed LAN interface allows
data visualization via an Internet-capable
device and HTTP protocol or standard brow-
ser. The LAN interface also supports data com-
munication via the Modbus TCP protocol,
(chapter 4.4).
.
Fig. 3
Detail of PCB - Ethernet interface
Visualization and operation are effected via
the web pages integrated in the electronics
module. Wireless access via mobile devices
such as tablet computers or smartphones is
possible by installing a wireless router on-site
and connecting it to the electronics module.
The Ethernet-interface supports a transmis-
sion rate of 10 or 100 Mbit/s. There are two
integrated Ethernet connections.
DANGER
Risk of injury or death!
External voltages may still be connected
even if the operating voltage is switched off.
B
A
