(b)
CONFIGURATION menu
1) The CONFIGURATION menu shows a list of the systems that have LRUs with available configuration data. The list is in ATA chapter sequence.
(c)
CONFIGURATION page
1) The CONFIGURATION page shows a list of the LRUs in the system that have available configuration data.
(d)
CONFIGURATION DATA page
1) The CONFIGURATION DATA page shows the configuration of the selected LRU.
(17) Option Codes (Fig. 19)
(a)
The CMCS has the capability to select optional or alternate CMC functions. The functions are listed in Figure 19. The CMC uses an option code to select the functions. These functions enable or disable CMC options, the interface between the CMC and a system, and the display of certain maintenance messages.
(b)
The option code is a hexadecimal number. The option code contains 28 characters and is divided in half. The first 14 characters are identified as OC-A, and the second 14 characters are identified as OC-B. Together the two halves make up the CMC option code.
(c)
The two characters on the right end of each half of the option code are made up of validity check bits. The validity check bits prevent the CMC from accepting an invalid option code.
(d)
When the option code is written in binary it shows the functions that are enabled. In binary, a 1 indicates that the function is enabled and a 0 indicates that the function is not enabled. Each bit is a software program pin (SWPP). The software program pins are numbered (left to right) from SWPP048 to SWPP001 for OC-A and SWPP096 to SWPP049 for OC-B. SWPP048 is the most significant bit and SWPP001 is the least significant bit for OC-A. SWPP096 is the most significant bit and SWPP049 is the least significant bit for OC-B.
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MAINTENANCE MANUAL
Figure 19 provides a list of the functions controlled by the
option code. With the option code written in binary, the
figure allows you to determine which functions are enabled.
The figure shows the software program pin of each function, a
function description, and the example option code in binary and
in hexadecimal.
Example option code:
1) This is the example option code that is shown in Figure 19:
A92000000012XX (OC-A) 000000200004XX (OC-B)
2) This is the binary expansion of the example option code:
binary bit: SWPP: 1010|1001|0010| ......... |0001|0010|XX 48 46 44 41 38 5 2 (OC-A)
binary bit: SWPP: ................ |0010| ...... |0100|XX 70 51 (OC-B)
3) In this example, the functions of software program pins 2,
5, 38, 41, 44, 46, 48, 51, and 70 are enabled by the option
code.The CMC option code is entered into the CMC from the configuration data page for the left and right CMC. The option code must be entered into each CMC. The CDU keyboard is used to enter the option code. Each half of the option code is entered separately. The CDU scratchpad must be clear before you can enter an option code.The CMC will not operate if it does not contain an option code or if the option code is invalid. The option code is set invalid when CMC software is installed or when the CMC detects a new airplane tail number from the MAWEA.If the CMC contains an invalid option code, the CMC will not process messages, will terminate all report requests it is servicing, and will not allow use of any other function except for help. When the CMC finds the option code to be invalid, the CMC will only show the Configuration Data page on the CDU.
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