Y1

PORT1= J1x

PORT2= J2x

PORT3= J3xC1

PORT4= J4x

R1

U1 74LS74

J1A

 

 

 

 

D1

N S M

 

R2

J1B

 

 

 

 

 

3

4

5

6

7

9 10 11 12 15

J2A

 

 

 

 

D2

N S M

 

R3

J2B

 

 

 

 

 

3

4

5

6

7

9 10 11 12 15

J3A

 

 

 

 

D3

N S M

 

R4

 

 

 

 

* JxA= INT MODE SELECT *

* JxC= CLOCK DIV SELECT *

 

 

 

C9

 

 

 

 

C12

 

 

 

 

 

U7

 

 

 

 

 

 

 

U9

 

 

 

 

 

 

 

N= NORMAL INT MODE

 

DIV1= CLOCK DIVIDE BY 1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

S= SHARED INT MODE

 

DIV2= CLOCK DIVIDE BY 2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

M= SHARED WITH RESISTOR

DIV4= CLOCK DIVIDE BY 4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C2

* JxB= INT SELECT *

 

 

+

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

U2

C4

U4

C7

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C3

 

 

 

 

 

RP1 MACH215

 

MACH215

 

 

 

 

 

 

 

 

 

 

 

 

 

 

J1C

 

 

 

 

 

RP2

 

 

 

 

 

 

 

J1D

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

J2D

AT RT NE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DIV1

DIV2

DIV4

16550 PORT1

 

16550 PORT2

 

 

 

 

 

 

 

 

AT RT NE

 

 

 

SWITCH8DIP SW1

 

 

 

J2C

 

U5 74HC125

 

A9

A8

A7

A6

A5

S3

S2

S1

J3D

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C5

 

 

C8

 

 

 

 

 

 

 

C10

 

AT RT NE

 

DIV1

DIV2

DIV4

U3

U6

U8

 

 

 

 

 

 

J4D

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

J3C

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AT RT NE

 

U11

74HC04

RP3

 

U12

75175

R6

C14

R7

 

U13

75174

R8

 

R9

C15

R10

75175

R11U14

C16

R12

 

R13

75174

U15

* JxE JUMPER SETTINGS *

P= PULL UP/DOWN ENABLE T= TERMINATION ENABLE L= CONNECT RX TO TX

J1E

R14

 

 

P

 

 

 

P

P3

 

 

T

 

 

 

L

 

 

 

 

 

 

 

 

L

 

 

 

J2E

 

 

 

 

P

 

R15

 

 

P

 

 

 

T

 

 

 

L

 

 

 

 

 

 

 

 

L

 

 

 

J3E

 

 

 

 

P

 

R16

 

 

P

 

 

 

T

 

 

 

L

 

 

 

 

 

 

 

 

L

 

B-1.

J3B

 

 

 

 

 

 

3

4

5

6

7

9 10 11 12 15

J4A

 

 

 

 

D4

 

N S M

 

R5

J4B

 

 

 

 

 

3

4

5

6

7

9 10 11 12 15

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

* JxD JUMPER SETTINGS *

 

RS422= REMOVE ALL JUMPERS

DIV1 DIV2 DIV4

RS485-AT= AUTO ENABLE

RS485-NE= NO ECHO

 

RS485-RT= RTS ENABLE

J4C

 

 

 

C13

RP4

 

 

 

C17

 

 

 

 

DIV1 DIV2 DIV4

16550 PORT3

16550 PORT4

XC7336-3440

74LS244

74LS245

C11

 

 

 

 

U10

U16

 

 

 

 

P2

 

P1

 

 

 

 

 

J4E

 

 

P

 

R17

P

318

T

L

 

-

 

L

SD837M

 

 

BoardLayout.Figure

30

Page 28
Image 28
Black Box RS-485, RS-422, IC183C manual J1A J1B

IC183C, RS-422, RS-485 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.