USB-RS485 Adapter
19.11.10
ebm-papst Mulfingen GmbH & Co. KG
22260-4-8627
Bachmühle 2, D-74673 Mulfingen
Phone +49 (0) 79 38 / 81-0
ebm-papst
USB-RS485 Adapter
Item number: 21490-1-0174
Product description
(retain for future use)
subject to alterations
Technical description:
The USB-RS485 Adapter connects RS485 units with PC.
Additional ebm-papst Software is needed as follows:
EC Control version 2.00 and later (item number 25714-2-0199)
The necessary USB drivers for using the adaptor are provided
with the EC-Control software package.
Mode of operation:
Adjustments are configurated with internal DIL-switches.
Default settings:
- Communication: “without Echo”
- Internal termination: “with Bus Termination”
Technical data:
Delivery scope:
- Adapter
- pluggable screw terminal
- USB cord
Housing
Plastic housing
Dimensions
56.0 x 31.2 x 24.5 mm
Power supply
5 V, via USB
Isolation
2500 V (protects USB
devices against overvoltages)
Data rate
up to 3 Mbit/s
RS485 connection:
- 2-wire
- up to 32 Bus-participants
- max. cable length 1200 m
(at 9600 bit/s)
Operating Systems
XP, Windows 7
Connection to the RS485-Bus:
Connect A and B-wires of the RS485-Bus to the
screw terminal and insert it into the adapter.
LED status:
-
Tx
Transmit
-
Rx
Receive
-
ON
Power-ON
Interface diagram:
Connection to the USB-interface:
Please install the USB drivers before connecting to the
USB port. These are part of the EC Control software.
Please find installation hints in the EC-control manual.
Connect the device to a USB port on your PC, using
the enclosed USB-connection cord. After the
connection is made, the yellow power LED lights up.
Status LEDs for transmit, receive and power
for ease of error diagnostics.
screw terminal signal
X
not connected
A
RS485 Bus A / Modbus RTU D1
B
RS485 Bus B / Modbus RTU D0
X
A
B
