Rockwell Automation 1784-PCMK PCMK Communication Card Installation Manual - Manual (Page 74)

G-2 Glossary
Publication 1784-UM519C-EN-P - September 2006
dual-port memory
Memory that can be viewed from two different hosts. This memory
allows the PCMK card and a host computer to communicate. The
memory range marked as dual-port memory is a common
shared-memory area.
enabler
Software used to control PC cards. There are three types of enablers:
generic (which can control many different types of cards), specific
(which is designed for a specific manufacturer PC card), and point
enabler (which is designed for a specific manufacturer’s PC card but
does not require Card and Socket Services).
Loopback connector
The PCM2 cable assembly uses a loopback connector for its
diagnostic loopback test. A loopback connector connects the
transmit and receive signals to each other and the modem control
signals appropriately to each other. This is used to verify operation
of the card through the cable and can be used to determine if
operational difficulties are due to the card/cable or the target device.
MS-DOS command prompt
The area in which you can execute commands to your computer.
Access to the MS-DOS command prompt merely gives you the
ability to utilize the DOS environment for command execution.
MS-DOS mode
This term is used in reference to a machine running the Windows 95
operating system and indicates shutting down the Windows 95
operating system to access MS-DOS only. This removes the plug and
play system from a notebook’s memory and eliminates any conflict
between virtual file managers, virtual display drivers, and other
virtual hardware drivers with any MS-DOS-only software packages.