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3.2 RS-232 Interface Specification
3.2.1 RS-232 connector specification
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SPECIFICATIONS
(2) ON/OFF status of each signal
The ON and OFF statuses of a signal are indicated below.
(3) Interface connector
For QJ71MB91 RS-232 interface connector, use a 9-pin D sub (female) screw type
connector.
Use metric screws.
(Output side) (Input side)
ON ......................... 5V to 15VDC, 3V to 15VDC
OFF ......................... -5V to -15VDC, -3V to -15VDC