Rockwell Automation 6000 Industrial Computers Technical Reference Guide - Manual (Page 3)

defines the circuit board dimensions, the card slot and I/O connector locations, and the
power supply voltage and current requirements. New PC technologies are first
implemented on active motherboard designs for the commercial market. The 6155 and
6180 computers are ATX active motherboard designs, so can deliver these new
technologies more quickly to the industrial PC market.
ISA Slots
“Industry Standard Adapter.” This is an add-in card slot that connects the card to the
computer processor over the 8MHz ISA bus, with either an 8-bit or 16-bit data path. ISA
is a legacy bus originally developed for the IBM PC. Most ISA cards do not support
“Plug and Play”, so the user must manually configure the system memory and interrupts
according to each card’s requirements. ISA slots are no longer available in most
commercial computers, and are no longer listed in PC standards. Because many
industrial applications still use ISA cards, all RAC6000 computers provide at least 1 ISA
slot.
PCI Slots
“Peripheral Connect Interface.” This is an add-in card slot that connects the card to the
computer processor over the 33MHz PCI bus. PCI cards support “Plug and Play”, which
allows a computer’s BIOS to automatically assign resources to the cards. This makes it
easy to install and configure PCI cards and their drivers. All RAC6000 computers
provide at least 1 PCI slot.
Shared Slots
This is a physical slot that can be used as either an ISA slot or a PCI slot, but not both
simultaneously. It has two connectors to support either card type. Shared slots are useful
when backplane space is limited, because they increase the available mix of ISA and PCI
slots.
Card Slot Specification
All RAC6000 literature defines computer slots by an “X / Y / Z” designation. The “X”
denotes the number of PCI slots, the “Y” is the number of ISA slots, and “Z” is the
number of shared slots. A computer with a 3/2/1 slot configuration has 3 PCI slots, 2
ISA slots, and 1 shared slot that can be used for either PCI or ISA. This computer can
support up to 4 PCI and 2 ISA cards, or 3 PCI and 3 ISA cards.
Processor Packages
Intel has developed a variety of “standardized” electronic sockets for its Pentium,
Pentium II, Pentium III, and Celeron processors. These packages are commonly referred
to as Socket 7, Slot 1, and Socket 370.
Socket 7
The original Intel Pentium processor socket is often called a “Socket 7” design. Many
other companies offer drop-in processors for Socket 7 motherboards. The 6155 and 6180
Pentium 166MHz options are a socket 7 design. The 6181 CPU card is a Socket 7
design, and supports Intel Pentium 166MHz, Intel Pentium MMX 233MHz, and AMD