Pepper Computer Modular Computers RS485 - Manual (Page 20)

SMART I/O User’s Manual
March 12, 1996 ©1996 PEP Modular Computers GmbH Page 1 - 8
Introduction
1.1 Product Overview
SMART I/O is based on a cost effective open system for industrial automa-
tion and industrial computing. By programming the SMART I/O using the
standard ISaGRAF workbench for IEC 1131-3 PLC programming languages
and the Ultra-C compiler (DOS, OS-9) for ANSI-C real-time programming,
the SMART I/O can be used as a micro PLC and as a real-time computer
system.
Equipped with the standard real-time fieldbus PROFIBUS, it allows the use
of the SMART I/O in a fully transparent real-time network architecture. This
architecture provides open communication between PEP systems and third
party I/O systems, as well as MMI. PROFIBUS not only allows I/O commu-
nication, but also file transfer, remote login and remote debugging facilities.
SMART I/O is designed around the MC68302 CPU from Motorola which
has two on-chip microprocessors. One is the industry standard 68HC000
running at 20MHz, and the second is a communication orientated RISC
processor. Fieldbus protocols use the power of this RISC CPU, freeing the
68HC000 for other tasks. Communication between the 68HC000 and the
communication processor is made using on-chip dual-ported RAM. Nonvola-
tile memory (battery backed SRAM and FLASH memory) allows a secure
and long-term backup of the application program and data.
Well suited for machinery manufacturers and all OEMs, the SMART I/O is
an ideal companion for VME9000 and IUC9000 systems. Connected to-
gether with these high-end VME or IUC computers and PLCs, SMART I/O
allows the decentralization of I/O functions through the world wide accepted
PROFIBUS fieldbus.
SMART I/O systems provide more power than dumped remote I/O systems
since they support local intelligence: an IEC1131-3 programming environ-
ment as well as ANSI-C programming under real-time OS. All this power is
provided with excellent price/performance characteristics.