ES-R-2001-M EasySync, ES-R-2001-M Datasheet - Page 4

• Manufacturer Part Number: ES-R-2001-M
• Description: Interface Modules & Development Tools RS232 to RS422/RS485 Serial Converter
• Manufacturer: EasySync

Specifications of ES-R-2001-M

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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1.1
The ES-R-2001-M and ES-R-2101-M are RS232 to RS485 / RS422 adapters that support transfer rates up
to 1M baud. The two models are identical, except that the ES-R-2101-M includes optical isolation
between the RS232 and RS422 / RS485 connections.
With RS422 mode selected the interface can be configured for four-wire operation with CTS / RTS
hardware handshaking. In RS422 mode the transmitter is always on.
With RS485 mode selected the interface can be configured for four-wire full duplex operation or two-wire
half duplex operation with optional echo back. The transmitter enable is controlled automatically with a
turn-around delay of less than 20us.
Optional RS422 / RS485 termination and bias resistors can also be configured.
The RS232 interface on the ES-R-2x01-M can be configured to be a DCE or a DTE type. The default link
settings select a DCE type which allows use of a straight-through DE-9S to DE-9P cable.
1.2
The ES-R-2x01-M uses three LEDs to indicate power and data activity. The table below defines the LED
functions.
Table 1.1 – LED Description
1.3
1.4
Table 1.2 – Performance Figures
Parameter
Asynchronous Speed
LED Colour
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•
•
•
•
•
•
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Introduction
Yellow
Green
Functional Description
LED Description
Features
Performance Figures
Red
Converts RS232 signals to RS422 or RS485 differential signals
Easy installation
Power supply provided
ES-R-2101-M provides TBD KV of optical isolation, including power supply
Metal case with mounting tabs
Optional DIN rail clips
DE-9P connector and screw terminals for a variety of RS422 and RS485 connections
Termination available through jumpers inside case
Function
Power
RxD
TxD
Performance
Up to 1Mbps
Power is being supplied to “DC-IN”
Shows data activity from RS232 to RS422 / RS485
Shows data activity from RS422 / RS485 to RS232
©2009 EasySync Ltd.
ES-R-2x01-M RS232 to RS422 / RS485 Converter User Guide
Description
Document Reference No.: ES_000011
Clearance No.: ES#*
Version draft
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