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10.1
Digital I/O Specifications
The specifications of the digital I/O terminals of the LF232 converter are as follows:
Digital Outputs:
(DO1)
(DO2 to DO4) Output type
Digital Input (option):
(DI1, DI2)
• Each terminal can be set to select each function.
• Terminal "CO2" is the common terminal of DO2 to DO4 and "CI" is the common terminal of DI1
and DI2.
• Each terminal is isolated from internal circuit.
(Output terminals are not isolated between them.)
• In the case of the standard specification (without digital I/O specification), a solid-state contact,
photo-coupler and resistor are not provided internally.
CO1
Output type
Number of outputs
Capacity
Number of outputs
Capacity
Signal type
Input resistance
Number of inputs
Solid-state contact
(option)
Photo-coupler (option)
CO2
CI
DI1, DI2
Voltage input
Contact output 2 (DO2 to DO4)
Contact output 1 (DO1)
- 128 -
Transistor open collector (standard)
1
30 VDC, 200 mA maximum
Solid-state contact output (non polarity) (option)
3
150 VDC, 150 mA maximum
150 VAC (peal value), 100 mA maximum
Voltage signal of 20 to 30 VDC
• High input level: 20 to 30 VDC
• Low input level: 2 VDC maximum
Approx. 2.7 kΩ
2
Transistor open collector
(standard)
Resistor
(option)
DO2 to
DO1
DO4
6F8A0917
Converter inside
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