Chapter 3 Function and Performance Specifications

 

 

 

 

No.

Item

Description

 

20

Interrupt input

The external input of the basic unit can be specified for interrupt input. With the interrupt input,

 

 

 

the corresponding interrupt program can be executed.

 

21

PWM output

The external output of the basic unit can be specified for pulse width modulated output. In this

 

 

 

case, pulses are output at the specified frequency with a duty between 0 and 100 %. A maximum

 

 

 

of 4 points, including the pulse array output, can be set.

 

22

Pulse train output

The external output of the basic unit can be specified for pulse output. In this case, pulses are

 

 

 

output at the specified frequency with a duty between 30 and 70 %. A maximum of four points,

 

 

 

including the pulse output, can be set.

 

23

Analogue input

The analogue input function is available in the 23-point type and analog exp. unit. The

 

 

 

resolution is 12 bits and it can be used by either selecting a current input between 0 and 20 mA

 

 

 

or a voltage input between 0 and 10 V.

 

24

Analogue output

The analogue output function is available in the 23-point type and analog exp. unit. The

 

 

 

resolution is 12 bits and it can be used by either selecting a current output between 0 and 20 mA

 

 

 

or a voltage output between 0 and 10 V.

 

25

Potentiometer

14-point, 23-point, and 28-point types have two potentiometers, with which setting values etc.

 

 

 

can be changed without using the programming units.

 

26

Battery

A dedicated battery can be installed in the 23-point and 28-point types so that data in the data

 

 

 

memory can be maintained even when the power supply to the main unit is shut off. In addition,

 

 

 

the data of the calendar clock in the 23-point and 28-poins types can be maintained. The battery

 

 

 

is an optional (model EH-MBAT).

 

 

 

Please refer to Chapter 15 (4) Life of the battery.

 

Note:

There are functions supported by H series that are not supported by this PLC (debug, trace, force, and simulation functions).

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Hitachi NJI-350B manual Interrupt input