SNAX/XF and SNAX/APN Event Management Programming Manual

Glossary
SNAX/XF and SNAX/APN Event Management Programming Manual—426859-001
Glossary-3
channel status word (CSW)
channel status word (CSW). An area in storage that provides information about the
termination of I/O operations.
character set. A defined collection of character representations valid for a particular
program, printer, or language.
cluster controller. A device that controls access (I/O operations) to a group of terminals or
printers connected to it. A cluster controller may be controlled by a program stored and
executed in the unit, or it may be entirely controlled by hardware.
collector. An EMS process that accepts event messages from subsystems and logs them in the
event log. See also Event Management Service (EMS)
.
command file. A file that serves as a source for command input. A command file containing
SCF commands is also sometimes called an OBEY file; commands in such a file are
executed by issuing the SCF OBEY command and specifying the name of the file.
common definition. In DSM programmatic interfaces, a definition (data declaration) used in
several commands, responses, or event messages in an SPI interface to a subsystem. See
also definition files
.
communication controller. An IBM front-end processor that directs the transmission of data
over an SNA network. Contrast with communications controller.
communications controllers. A generic term for hardware that controls physical connections
to systems. A device that directs the transmission of data over the data links of a
network; its operation may be controlled by a program executed in a processor to which
the controller is connected, or it may be controlled by a program executed within the
device. Contrast with communication controller.
Compaq internal token. A token intended for interpretation and use only by Compaq
software.
Compaq NonStop™ Kernel. The Compaq operating system under which the SNAX/XF and
SNAX/APN software runs, consisting of the core and system services.
compatibility distributor. An EMS distributor process that filters event messages according
to fixed (rather than user-specified) criteria, obtains text for these messages that is
compatible with the operator console of Compaq NonStop™ Kernel versions earlier
than C00, and writes the text to the standard system console-message destinations.
condition code. A mechanism within the Guardian environment that indicates, upon
completion of each file-system procedure call, whether or not the call was completed
successfully. There are three condition code states. They are condition code less than
(CCL or <), condition code equal (CCE or =), and condition code greater than
(CCG or >).
conditional token. A token that is sometimes, but not always, present in a particular event
message. See also unconditional token
and Compaq internal token.