ES-R-2X01B-M Datasheet, PDF (7/20 Pages) List of Unclassifed Manufacturers – Converters Manual

ES-R-2x01B-M
Document Reference No.: ES_000086
RS-232 to RS-422/RS-485 Converters Manual
Version 1.0
Clearance No.: ES#42
4.2 RS-232 DCE or DTE Pin Assignment
Inside the unit, there are two 2x3 (JP1, JP2) header blocks which are jumpered to select the RS-232 port
pin assignment to DCE or DTE. The factory default setting is DCE.
Jumper
JP1 1-3
JP1 2-4
JP2 1-3
JP2 2-4
JP1 3-5
JP1 4-6
JP2 3-5
JP2 4-6
Function
RS-232 port assigned to DCE (Data Communications Equipment). See
Figure 2.
RS-232 port assigned to DTE (Data Terminal Equipment). See See
Figure 2.
Table 1
Jumper settings for RS-232 DCE or DTE Pin Assignment
2
1
4
3
6
5
JP2
2
1
4
3
6
5
JP1
DCE setting
Figure 2
Jumper pin numbers
DTE setting
Jumpers used to select RS-232 DCE and DTE
4.3 RS-422 and RS-485 Mode Block Configuration
A 3-pin DIP switch is used to set to select the mode of operation. The switches should be set to RS-422
mode or RS-485 mode as per the requirements of your application.
The RS-422 & RS-485 Mode Block Configuration Settings are shown in Table 2.
RS-422
RS-485
Operation Mode
S1 S2 S3
4 wire with handshaking
ON ON ON
Full Duplex (4 wire)
OFF ON
Half Duplex (2 wire)
with Echo
Half Duplex (2 wire )
without Echo
OFF OFF
OFF OFF
Table 2
RS-422 and RS-485 configuration
ON
ON
OFF
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