Installation guide

DC 900-1564A 33
Chapter
4
Commands and Responses
This chapter describes the commands written to the ICP and the responses received
from the ICP. After you are familiar with the functionality, refer to Chapter 5 for
detailed header formats to aid in writing application programs to interface to the SLC
protocol.
Table 4–1 defines the access modes required for using specific categories of commands
and responses. The
DLI_ICP_CMD_ATTACH command (Section 4.1.1 on page 35 and
Section 5.1 on page 62) establishes the access mode. Table 4–2 summarizes the catego-
ries, which are explained further in the remainder of this chapter.
Table 4–1: Access Modes
Access
Mode Code
Applicable Command/Response Categories
(see Table 4–2)
Master SLC_MASTER_MODE Can use the Access, Link, Data and Report categories
Reader SLC_READER_MODE Can only use the Access and Report categories
Control SLC_CONTROL_MODE Can only use the Access, Link and Report categories
Trace SLC_TRACE_MODE Can only use the Access and Tr ac e categories