ES-U-2016-RM EasySync, ES-U-2016-RM Datasheet - Page 30

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

6.4
DB-9 Male connector
The table below shows the RS-485 (full duplex) pinout of the DB-9 male connector.
5-way Terminal Block
The table below shows the RS-485 (full duplex) pinout of the 5 way terminal block (only available on
some models).
Pin Number
Pin Number
Shield
RS-485 Signal Pin-out (full duplex)
1
2
3
4
5
1
2
3
4
5
Note: Other pins have no function in this mode and should be left un-connected.
Case Ground
Pin Type
Pin Type
Table 21
Ground
Ground
Output
Output
Output
Output
Table 22
Input
Input
Input
Input
Description
TxD- = Transmit data, negative polarity
TxD+ =
RxD+ = Receive data, positive polarity
RxD– = Receive data, negative polarity
GND = Signal ground
Drain = typically connected to the host PC case
Description
TxD- = Transmit data, negative polarity
TxD+ = Transmit data, positive polarity
RxD+ = Receive data, positive polarity
RxD– = Receive data, negative polarity
GND = Signal ground
RS-485 full duplex pin-out for DB-9 connector
©2010 - 2011 EasySYNC Ltd.
RS-485 full duplex pin-out for terminal block
Transmit data, positive polarity
Document Reference No.: ES_000061
USB to Serial Converters Manual
Clearance No.: ES
Version 1.2
# 35
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