Pepper Computer RS485 User Manual

SMART I/O User’s Manual

©1996 PEP Modular Computers GmbH

March 12, 1996

Page 2 - 11

Chapter 2  SMART-BASE

1

PITA0

I/O Controller Port A0

2

PITA1

I/O Controller Port A1

3

PITA2

I/O Controller Port A2

4

PITA3

I/O Controller Port A3

5

PITA4

I/O Controller Port A4

6

PITA5

I/O Controller Port A5

7

PITA6

I/O Controller Port A6

8

PITA7

I/O Controller Port A7

9

System GND

GND

10

Serial RxD

RxD

11

System VCC

5V VCC

12

Serial TxD

TxD

13

CS-SM3

Port Select (Module 2)

14

Serial CLK

CLK

15

Reset

Reset (Power ON/OFF)

16

SM3 Interrupt PI/T

INT1 to the
I/O Controller

Dangerous voltages may be present at the terminals.

1

Screw Terminal 13

2

Screw Terminal 13

3

Screw Terminal 1

4

Screw Terminal 2

5

Screw Terminal 3

6

Screw Terminal 4

7

Screw Terminal 5

8

Screw Terminal 6

9

Screw Terminal 7

10

Screw Terminal 8

11

Screw Terminal 9

12

Screw Terminal 10

13

Screw Terminal 11

14

Screw Terminal 12

15

Screw Terminal 14

16

Screw Terminal 14

The PC board connections to the screw terminals are capable of absorbing a

continuous current of up to 3A each. However, pins 13 and 14 can support

up to 6 Amps.