GROUP 0, PORT B DATA

BADR3 + 1

READ/WRITE

7

 

6

5

4

3

2

1

0

 

 

 

 

 

 

 

 

 

D7

 

D6

D5

D4

D3

D2

D1

D0

 

 

 

 

 

 

 

 

GROUP 0, PORT C DATA

 

 

 

 

 

BADR3 + 2

 

 

 

 

 

 

 

READ/WRITE

 

 

 

 

 

 

7

 

6

5

4

3

2

1

0

 

 

 

 

 

 

 

 

 

C8

 

C7

C6

C5

C4

C3

C2

C1

 

 

 

 

 

 

 

 

 

CH4

 

CH3

CH2

CH1

CL4

CL3

CL2

CL1

 

 

 

 

 

 

 

 

GROUP 0 CONFIGURE

 

 

 

 

 

BADR3 + 3

 

 

 

 

 

 

 

READ/WRITE

 

 

 

 

 

 

7

 

6

5

4

3

2

1

0

 

 

 

 

 

 

 

 

 

MS

 

M3

M2

A

CH

M1

B

CL

 

 

 

 

 

 

 

 

 

This register is used to configure the Group 0 ports as either input or output, and configures the operating mode to mode 0, 1 or 2. The following describes configuration for mode 0. See the Intel or Harris 8255 data sheets for information on other modes of operation

8255 MODE 0 CONFIGURATION

1. Output Ports

In mode 0 configuration, 82C55 ports can be configured as outputs, holding the data written to them. For example, to set all three ports (A, B, & C) of Group 0 to output mode, write the value 80 hex to BADR3 + 3 (refer to Table 5-3 below). The user is then able to read the current state of the output port by simply reading the address corresponding to that port.

2. Input Ports

In mode 0 configuration, the 82C55 ports can be configured as inputs, reading the state of the inputs lines. For example, to set all of the ports of Group 0 to the input mode, write the value 9B hex to BADR3 + 3.

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Omega Engineering PCI-DIO96 user manual Group 0, Port B Data, Group 0, Port C Data, Group 0 Configure, Mode 0 Configuration

PCI-DIO96 specifications

The Omega Engineering PCI-DIO96 is a versatile and high-performance digital input/output board designed for a wide range of industrial automation and data acquisition applications. With its robust features and advanced technologies, the PCI-DIO96 stands out in the field of digital I/O expansion cards.

At the core of the PCI-DIO96 is its capability to handle 96 digital I/O channels, making it suitable for applications that require extensive control and monitoring. The board is equipped with 96 lines that can be individually configured as input or output, providing flexibility to manage various digital devices such as sensors, valves, and relays. This configuration is particularly beneficial in complex systems where a mix of digital signals is needed.

One of the most notable characteristics of the PCI-DIO96 is its high-speed operation. The board supports data transfer rates that can accommodate demanding applications, enabling rapid response times crucial in industrial environments. This high-speed capability ensures that it can keep up with the fast-paced demands of modern automation processes.

The PCI-DIO96 also includes additional features such as programmable timers and counters, allowing for precise control and measurement of time-sensitive processes. This performance enhancement is especially useful in applications requiring synchronization of multiple digital signals or sequential operations.

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In conclusion, the Omega Engineering PCI-DIO96 is a powerful digital I/O board that combines extensive channel capacity, high-speed performance, and robust features. Its versatility makes it an ideal choice for diverse applications in industrial automation, offering reliability and ease of integration that professionals in the field seek for their projects. Whether for monitoring, control, or data acquisition, the PCI-DIO96 remains a trusted solution for engineers and technicians alike.