ES-U-2016-RM EasySync, ES-U-2016-RM Datasheet - Page 31

• Manufacturer Part Number: ES-U-2016-RM
• Description: USB Interface IC USB to 16 Ports RS422/RS485, Metal
• Manufacturer: EasySync

6-way Terminal Block
The table below shows the RS-485 (full duplex) pin-out of the 6 way terminal block (only available on
some models).
Wiring Diagrams
The following diagram shows an RS-485 full-duplex bus. The ES-U-xxxx-x has a built-in resistor for
terminating its RxD +/- input, which can be enabled using a jumper. The Tx +/- lines which are outputs
from the ES-U-xxxx-x would be terminated at the receiver at the other end of the bus as shown. Twisted
pair wires are required for each signal pair.
Pin Number
1
2
3
4
5
6
ES-U-xxxx-x
Pin Type
Description
Ground
Output
Output
Table 23
Input
Input
See
RxD+
TxD+
RxD-
TxD-
Figure 19
GND
Description
TxD- = Transmit data, negative polarity
TxD+ = Transmit data, positive polarity
RxD+ = Receive data, positive polarity
RxD– = Receive data, negative polarity
For ES-U-2101-M, pin 5 is GND
For ES-U-3001-M, pin 5 is optional 5VDC output
GND = Signal ground
©2010 - 2011 EasySYNC Ltd.
RS-485 full duplex pin-out for terminal block
RS-485 Full Duplex Wiring
RS-485 Device
Document Reference No.: ES_000061
RxD+
RxD-
TxD+
TxD-
GND
USB to Serial Converters Manual
Clearance No.: ES
Version 1.2
# 35
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