Sw1 Rs-485 2W/4W; Sw2 Rs-485/Rs-232 Mode Selection - GE D20 Installation And Operation Manual

D20/D200
Installation and Operations Guide
Connections and Configuration
D20ME II Jumpering
SW1 When set for RS-485 mode (see SW2), each serial communication port channel must
be set for either RS-485 2-wire with the switch ON, or RS-485 4-wire (RS422) with
RS-485 2W/4W
the switch OFF. RS-232 is the factory default setting for the D20ME Processor with
the switch OFF.
Note:
Note: When operating a serial communication channel in RS-232 mode always
SW1 (pins)
1-16
2-15
3-14
4-13
5-12
6-11
7-10
SW2 allows each serial communication port channel to be set for either RS-485 (RS-
SW2
422) mode with the switch ON, or for the default setting of RS-232 mode with the
RS-485/RS-232
switch OFF.
Mode Selection
1-16
2-15
3-14
4-13
5-12
6-11
7-10
48
, continued
, continued
In order for RS485 (2-wire/4-wire) to operate, the RTS ON/OFF setting must
be enabled and both DCD and CTS must be disabled in Config Pro specific
to the protocol being used for that serial port. RTS must be toggled ON for
RS485 2-wire transmissions and may be set continuously ON for RS485 4-
wire data transmissions.
have the corresponding switch OFF.
Serial Comm Port
1
2
3
4
5
6
7
JP10 (pins) Serial Comm Port
1
2
3
4
5
6
7
994-0078-2.00-7
RS-485 2- RS-485 4-
wire wire
ON OFF
ON OFF
ON OFF
ON OFF
ON OFF
ON OFF
ON OFF
RS-485(RS-422)
mode
ON OFF
ON OFF
ON OFF
ON OFF
ON OFF
ON OFF
ON OFF
GE Energy
RS-232
OFF
OFF
OFF
OFF
OFF
OFF
OFF
RS-232 mode
General
Full