Technical data
Product Specification
HIF-2121/R5 CAGE CODE: 97896 SCALE: NONE SIZE: A DWG NO: 965-1176-601 REV: D SHEET 143
String Format Version String Format Version (1 byte)
Number of Categories (1 byte)
Category1(1byte)
Category2(1byte)
Category3(1byte)
.
.
.
Data Block
Last Category (1 byte)
CRC String CRC String (4 bytes)
TABLE 6.10.15.1.1-1 STRING FORMAT VERSION ZERO FOR CMW COMMAND
String Format Version String Format Version (1 byte)
Number of Categories (1 byte)
Category1(1byte)
Category2(1byte)
Category3(1byte)
.
.
.
Data Block
Last Category (1 byte)
TABLE 6.10.15.1.1-1 STRING FORMAT VERSION ZERO FOR CUW COMMAND
Note: In the <user input string> the String Format Version, Data Block and CRC String will be separated by the ‘/’ character.
Parsing within the Data Block will be done using a ‘ ’ (space) character.
6.10.15.2 Configuration Module Read
The EGPWC requires the configuration information to be read from the configuration module each power up. The integrity of
the read configuration data will be checked using a 32-bit CRC prior to comparison against the current NVM configuration. If
the data to be written to the configuration module fails the 32-bit CRC check, the read process shall be restarted for up to four
attempts.
If a configuration change is sensed from the current NVM configuration, then two consecutive reads of the configuration
module must yield matching results before configuration can continue. If the first read matches the NVM version, then the
system can configure immediately.
For user requested reads of the configuration module the values of each category and the CRC will be returned.
6.10.15.3 Configuration Module Write (CMW)
The EGPWS requires a string of configuration information to be written to the configuration module memory when requested
from the keyboard monitor.
The user input string to be written to the configuration module will be checked using a 32-bit CRC prior to being written to
the configuration modules EEPROM. For the CMW command the user enters this CRC. This string would read for example:
CMW0/14056001300000000/1919913334
Where the first zero reflects the sting version, the next number is the number of categories and the remaining numbers before
the second separator reflect the ID for each of the categories. The 10-digit (in this case) number is the CRC.