71
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 kΩ
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
To Next Page
