Document Reference No.: ES_000011
ES-R-2x01-M RS232 to RS422 / RS485 Converter User Guide
Version draft
Clearance No.: ES#*
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©2009 EasySync Ltd.
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2.1.5.2 DTE Configuration
The RS232 interface can be configured as a DTE type interface. A DTE type RS232 interface results in the
9-way RS232 D-Type socket having the following pin-out and signal directions.
DE-9S Pin Name
Comment
1
DCD
Linked to pin 4 and pin 6
2
Rx (In)
An input pin for DTE type RS232 interface
3
Tx (Out)
An output pin for DTE type RS232 interface
4
DTR
Linked to pin 1 and pin 6
5
GND
GND
6
DSR
Linked to pin 1 and pin 4
7
RTS (Out) An output pin for DTE type RS232 interface
8
CTS (In)
An input pin for DTE type RS232 interface
9
No connection
Shield
Shield
No connection
Table 2.8 – RS232 DE-9S DTE Pin-Out
To select the DTE configuration fit links between the following pins on JP5 and JP6.
JP5 DTE Selection
Link pins 3 – 5
Link pins 4 – 6
JP6 DTE Selection
Link pins 3 – 5
Link pins 4 – 6
Table 2.9 – JP5 & JP6 DTE-DCE Configuration Jumper – Set for DTE
2.1.6
DC-IN Connector
The ES-R-2x01-M is supplied with an ex5V, 10W DC power supply. It is recommended that the
ES-R-2x01-M is only used with this power supply.
If an alternative power supply is used it must be a +5V +/-5% DC supply capable of providing at least
1A. The DC-IN connector accepts a DC Jack with a 2.1mm pin and a 5.5mm barrel with +5V on the
centre pin. There is no reverse voltage protection.
The Yellow PWR LED is illuminated when power is applied to the ES-R-2x01-M.
Preliminary
