Pepper Computer Modular Computers RS485 - Manual (Page 51)

SMART I/O User’s Manual
©1996 PEP Modular Computers GmbH March 12, 1996 Page 2 - 11
2
Chapter 2 SMART-BASE
SMART-Module location #2 (ST1) pinouts
Pin Nr. Signal Description Pin Nr. Signal Description
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
Pinouts process side (ST6, ST4 and ST2) for Modules #0 to #2
WARNING !
Dangerous voltages may be present at the terminals.
Pin Nr. Signal Pin Nr. Signal
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.