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English
8. RS232C Input and Output
Signals
Conforming to EIA-RS232C
•
Signals: Asynchronous, start-stop, half-duplex
•
Communication speed: Switchable among 1200, 2400, 4800, or 9600 bps
•
Stop bits: Switchable between 1 or 2 stop bits
•
Parity: Switchable among even parity, odd parity, or no parity
•
Data length: Switchable between 7 or 8 bits
Switching of the various parameters is performed in the initial settings.
Electrical Specifications
1)
Driver side:
Using MAX232 or equivalent product
Output voltage width
±
5 V to
±
10 V
Output resistance
300
Ω
or more
Output short-circuit current
±
10 mA
2)
Receiver side: Using MAX232 or equivalent product
Input resistance
3 to 7 k
Ω
Input allowable voltage
±
30 V
Input threshold Low 1.2 V, High 1.7 V
3)
Input/output connector
Plug
DB-25P (JAE) or equivalent product
Receptacle
DB-25S (JAE) or equivalent product
4)
Cable length
A cable length of no more than 15 m(50 feet) should be used.
A shielded cable should be used, and the shield must be connected to the connector housing.
Cross section of the cable
Shield
Outer Sheath
