Allen-Bradley 1747-OC Series, Руководство пользователя

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1747-UM001A-US-P - March 2000
Chapter
1
Introducing the Open Controller
Introducing the Open Controller
CPU Module
The open controller is a PC-based controller that resides in an
Allen-Bradley 1746 chassis. The open controller supports a range of
PC-based operating systems and software packages, including many
popular real-time operating systems (RTOS). There are two versions of the
open controller CPU module (Figure 1.1):
•
1747-OCE 5x86 class CPU
•
1747-OCF 266 MHz Pentium® class CPU
Both versions have a 8K-byte shared memory area that provides an
interface to an integrated 1746 local I/O scanner. The open controllers can
address all 1746 I/O and communication modules, including 1747-SN
remote I/O and 1747-SDN DeviceNet™ scanners. You can expand your
open controller system with a variety of PCI-based option modules that add
memory, communications, video display, etc.These option modules work
with either open controller CPU module.
The following table compares the features of the 1747-OCE and 1747-OCF
open controller CPU modules:
1747-OCE 1747-OCF
CPU processor 5x86 100 MHz 266 MHz Pentium®
Local I/O scanner processor 33 MHz AMD 188
System memory
1
(user-supplied)
DRAM (up to 64 Mbytes) SDRAM (up to 128 Mbytes)
512K byte battery-backed SRAM
Flash memory
1
(user-supplied)
1.3” FlashDrive™ (up to 160 Mbytes) Type I or II CompactFlash™ card (up to 192
Mbytes); or Type II 1” microdrive (170 or
340 Mbytes)
Note: The FlashDrive, CompactFlash, or microdrive will appear as an IDE hard drive to the
operating system
BIOS AMI BIOS™ General Software
Communication ports two isolated serial ports, configurable up to
115.2K bit/s:
COM1 - RS-232
COM2 - RS-232/422/485
one enhanced parallel port same as 1747-OCE, plus:
Universal Serial Bus (USB) port
Connectors miniature PS/2 style DIN connector -
keyboard two miniature PS/2 style DIN connectors -
keyboard and mouse
1 Refer to "Approved System and Flash Memory Products" on page A-4
Allen-Bradley HMIs