ES-U-1032-RM EasySync, ES-U-1032-RM Datasheet - Page 29
ES-U-1032-RM
Manufacturer Part Number
ES-U-1032-RM
Description
USB Interface IC USB to 32ports RS232
Manufacturer
EasySync
Datasheet
1.ES-U-3008-RM.pdf
(43 pages)
- Current page: 29 of 43
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Wiring Diagrams
The diagram shows an ES-U-xxxx-x converter connected to an RS-485 half-duplex bus. If the ES-U-xxxx-
x is at one end of the bus (as shown), the built-in resistor can be enabled to terminate the Data +/-
lines. The Tx +/- termination jumper or DIP switch is used to enable this resistor. A second termination
resistor is fitted at the other end of the bus as shown.
If additional unexpected zero bytes are being received, some models of ES-U-xxxx-x converter also
features bias resistors (not shown below) which can be enabled by fitting the Pull up Tx+ to VCC and Pull
down Tx- to GND jumpers. These should not be enabled if another device on the bus is already providing
biasing. Twisted pair wires are required for each signal pair.
ES-U-xxxx-x
Figure 18
Data+
Data-
GND
©2010 - 2011 EasySYNC Ltd.
RS-485 Half Duplex Wiring
Document Reference No.: ES_000061
USB to Serial Converters Manual
RS-485 Devices
Data+
Data-
GND
Data+
Data-
GND
Data+
Data-
GND
Clearance No.: ES
Version 1.2
# 35
29
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