User Manual
DIC324
1
Introduction
Digital I/O Module with galvanic isolation DIC324 is implemented in PC/104+ standard on
the basis of the stack of DIC122 and DIC123 modules. It has 16 channels of isolated digital input
channels and 8 channels of isolated digital output. Electrical parameters of the modules are
identical to those of the DIC122 and DIC123 modules. The modules use the Field-Programmable
Gate Array (FPGA), which makes it possible to change algorithm of processing inputs and outputs
without changing the topology.
All the channels are isolated fro the system and from each other.
The channels use either two-wire or single-wire (with common ground) connection. It is
possible to connect signals of the "potential-free" contact type with the use of an external (up to 52
V) power supply source.
Load connection: two-wire/single-wire
1.1
Module technical features
System bus:
8-bit ISA bus.
Digital input:
16 digital input channels;
Single-wire or two-wire signal connection;
Input voltages ±3.2 V ... ±52 V.
Digital output:
8 digital output channels;
Single-wire or two-wire signal connection;
Switching output voltages/currents: 60V/500mA (with a differential load connection).
LED:
indication of requests (references).
Main features:
Delay of
input signals: 25 µs;
Changing frequencies over each channel (up to 30 kHz);
Optical isolation of inputs/outputs between the channels: 500 V;
Optical isolation of inputs/outputs between an input and the "ground": 1000 V;
Generation of hardware interrupts by events at inputs;
Programmable time interval for de-bouncing at inputs (de-bouncing).
Additional features:
Five separable lines of hardware interrupts IRQx (where x = 3, 4, 5, 6, 7).
Possibility for development of its proper configurations (firmware) FPGA
Main control capabilities
Programming interrupts;
Setting the range of input voltages.
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