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OP5969-1 RS422 Digital Inputs and Outputs (DIO)

Owned by Sylvain Ménard
Last updated: Jul 11, 2024
2 min read

The OP5969-1 is an I/O expansion option available for many OPAL-RT’s simulators and FPGA Processor and I/O Expansion Units.
The I/O Expansion connects to the rear interface of the simulator and provides 4x DB9 connectors containing 6 TX and 6 RX for RS422 signals.
These signals are typically used to transmit differential encoder inputs and outputs.

Page Content

General Pin Assignments

DB9F Pin

RS422 OUT CH 00-02

DB9F Pin

RS422 IN CH00-02

DB9 Pin Assignments
OP5969-1 RS422 Digital Inputs and Outputs (DIO)

DB9F Pin

RS422 OUT CH 03-05

DB9F Pin

RS422 IN CH03-05

1

TX0+

1

RX0+

1

TX3+

1

RX3+

2

TX1+

2

RX1+

2

TX4+

2

RX4+

3

TX2+

3

RX2+

3

TX5+

3

RX5+

4

N.C

4

N.C

4

N.C

4

N.C

5

+12V limited*

5

+12V limited*

5

+12V limited*

5

+12V limited*

6

TX0-

6

RX0-

6

TX3-

6

RX3-

7

TX1-

7

RX1-

7

TX4-

7

RX4-

8

TX2-

8

RX2-

8

TX5-

8

RX5-

9

DGND

9

DGND

9

DGND

9

DGND

*Same 12 V for all the connectors. 400 mA total

Specifications

RS422 Digital In

Number of channels

6 differential inputs

Detection threshold

± 0.5 V

Input current

± 3 mA

Input Differential Voltage (Max)

± 25V

Common Mode Input Voltage

-15V to +15V

Delay Low-to-High

65 ns

RS422 Digital Out

Number of channels

6 differential outputs

 

High level (With load)

Low level (With load)

 

2.5 V min @ -20 mA

0.5 V max @ 20 mA

0 V - 5 V

 

 

Typical voltage swing

 

 

Delay Low-to-High

55 ns

 

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