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• NOTE: In "422" mode, the ECHO setting is not used.
• The Echo mode is useful for detecting if there is data collision occurring on RS-
485. If the echoed data is not equal to the transmitted data, then data collision is
occurring.
DB9 Pin Assignment
DB9 Pin
RS-422
1
2
TxD +
3
RxD +
4
5
6
7
8
9
Instruction Manual
RS-485
TxD -
Data -
Data +
NC
RxD -
NC
GND
GND
NC
NC
NC
NC
NC
NC
NC
NC
3
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