Cabling; Rs-232 Signal Levels - Dymo LabelWriter SE300 User Manual

Dymo labelwriter se300: user guide
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Cabling

RS-232 Signal Levels

The serial interface uses standard RS-232 signal levels as shown
in Table 2-1.
Signal Level
MARK (1)
SPACE (0)
Table 2-1. RS-232 signal levels.
4-8
Input
Output
-27V to -5V
-5V
+5V to +27V
+12V

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