DUAL PORT RS-232422/485 SERIAL INTERFACE

Appendix: Circuit-Board Design

 

 

 

9

6

 

9

 

6

 

 

 

5

1

 

5

 

1

 

 

 

 

1 PORT J1

 

2 PORT J1

 

 

422/485 PORT 1

 

 

RS-232 PORT 1

 

422/485 PORT 2

RS-232 PORT 2

 

 

C10

 

 

 

 

U13

 

 

 

 

U12

 

 

 

 

 

 

 

 

 

 

E6

 

E5

 

E7

 

E8

 

 

 

 

 

 

 

 

 

 

 

C9

 

 

 

 

 

 

 

 

 

P3

 

 

 

R9

R8

 

 

 

 

P1

 

 

 

 

 

 

 

 

 

 

U8

 

 

 

U9

 

 

U11

 

 

 

U18

RP4

 

RP3

RP2

 

C8

 

 

 

 

C7

 

 

PORT1

 

 

 

15

 

15

 

U7

U6

PORT1

PORT2

 

 

 

E4

12

 

12

R6

C

 

 

11

 

11

B

 

 

10

 

10

 

 

A

 

 

 

 

6

 

6

 

 

C

 

 

 

 

5

 

5

 

 

 

 

 

 

4

 

4

 

 

B

 

 

R5 R4

D2 R3

D1 3

 

3

R7

 

A

 

 

E10

E9

2

 

2

PORT2

RP1

PORT1

PORT2

 

U3

 

 

 

E3

 

C6

 

E2

 

E1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PORT2

 

 

P2

 

 

 

 

 

 

R2

 

P6

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PORT2

 

 

PORT1

 

 

SW2

 

U2

 

 

 

 

 

 

 

 

 

 

 

C3

 

 

C2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

U1

 

 

 

 

 

 

PORT1

R1

 

 

 

 

 

 

 

 

 

 

 

U5

 

 

U4

V1

SW1

 

 

 

 

C5

 

C1

 

 

 

 

C1

 

 

 

 

 

 

 

 

 

14

Page 19
Image 19
Black Box IC175C, RS-485, IC113C manual Appendix Circuit-Board Design, PORT2 RP1 PORT1 SW2 SW1

IC113C, RS-485, IC175C specifications

The Black Box IC113C and IC175C are part of a series of versatile RS-485 interface converters designed to facilitate reliable data transmission over long distances. RS-485 is a standard defining the electrical characteristics of drivers and receivers for use in serial communications systems, and these specific Black Box converters exemplify the technology's adaptability and robustness.

The IC113C is an RS-485 to RS-232 converter, providing a seamless transition between these two common serial communication protocols. With a compact design, it boasts an operating temperature range of -40 to 85 degrees Celsius, making it suitable for harsh environmental conditions. Its key feature includes the ability to extend the communication distance up to 4,000 feet, which is ideal for industrial applications where devices may be far apart. Additionally, the IC113C includes built-in surge protection, ensuring that the device can withstand electrical noise and spikes, ultimately increasing the system's reliability.

On the other hand, the Black Box IC175C serves as an RS-485 to USB converter, bridging older serial devices with modern USB interfaces. This converter is critical for users wanting to connect legacy equipment to contemporary computing systems. Featuring a plug-and-play design, the IC175C is easy to install with no external power supply required, as it is powered directly through the USB connection. It also supports data rates up to 115.2 Kbps, ensuring fast and efficient data transfer.

Both models employ differential signaling, which enhances noise immunity and allows for greater transmission distances compared to single-ended communication standards. Furthermore, the converters support multiple nodes on the same bus, accommodating a network of devices without requiring complex wiring schemes.

In summary, the Black Box IC113C and IC175C offer essential features that cater to diverse industrial and commercial applications. With their robust construction, extensive operating ranges, and compatibility with various communication protocols, these converters enhance system interoperability and provide durable solutions for long-distance data communication needs. Whether connecting legacy systems or extending communication capabilities, these devices exemplify reliability and efficiency in modern data transmission technologies.