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W&T
The DIL switch settings can be found in the following table:
Operating mode
RS232
RS422, RS485, 4-wire bus master
DTR handshake
RS422, RS485, 4-wire bus master
RTS handshake
RS485, 4-wire / 2-wire with echo
DTR control
RS485, 2-wire without echo
*
DTR control
RS485, 4-wire / 2-wire with echo
RTS control
RS485, 2-Draht without echo
RTS control
RS485, 4-wire / 2-wire with echo
automatic control
RS485, 2-wire without echo
automatic control
*) Terminating the bus system when required.
Important Note
The terminating DIL switches SW6 and SW7 must never be in
the ON position when using the module in RS232 mode. This
will result in a significant increase in the current draw and may
cause the RS232 driver to fail.
Subject to error and alteration
SW1
SW2
SW3
SW4
SW5
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
ON
OFF
ON
OFF
ON
ON
OFF
OFF
OFF
ON
OFF
ON
OFF
ON
OFF
OFF
ON
OFF
ON
OFF
ON
ON
OFF
ON
OFF
Interface modules
SW6
SW7
SW8
OFF
ON
OFF
*
*
OFF
*
*
ON
OFF
*
*
OFF
*
*
OFF
*
*
ON
OFF
*
*
ON
OFF
*
*
OFF
*
*
OFF
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