www.pulsar.pl
EN54-2A17LCD
RED POWER
42
The RS485-WiFi
„INTRW” interface is a device used to convert signals between the RS485 bus and the
WiFi network. For proper operation, the unit requires an external power supply in the range of
10÷30V DC e.g.
drawn from a PSU of the EN54 series. The physical connection of the interface takes place under galvanic
isolation. The unit is mounted in a hermetic enclosure protecting against adverse environmental conditions.
Fig. 33. The The Wi-Fi communication using the RS485-
WIFI „INTRW” interface.
9.4. RS485 network communication.
Another type of network communication is the RS485 communication using two-wire transmission path. To
achieve this kind of data exchange, the PSU should be equipped with the additional RS485 TTL "INTR" interface,
converting data from the PSU into the RS485 standard and the USB-RS485 "INTUR" interface, converting data
from the RS485 network to the USB. Offered interfaces are galvanically isolated and protected against surges.
Fig. 34.
RS485 communication using the „INTR” and „INTUR” interfaces.
