System Description

System Description and Installation Manual for MXS ICD10004-01
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2. Installation
Installation Use Case is executed to load and verify Installation Data. Installation Data is written into MXS’s nonvolatile memory and only needs to be loaded
once per installation. Installation Data can be read at any time to determine if the data has been corrupted.
The process and command sequences for the Installation Use Case is outlined in the following steps and in Table 0-62Table 6-66.
1. Construct and send a Data Request Message requesting Installation Response Message
2. Receive and decode Acknowledge Message (ACK)
3. Receive and decode Installation Response Message.
Note: The Installation Message communication fields vary depending on whether Serial or Ethernet communications are to be used:
6. Serial Communications:
Enter values for one of the two COM Port fields.
 Ethernet communications:
Enter values in both the Ethernet IP Address field and one of the two COM Port fields. The COM port field is used to send the Installation Message via
Serial communications. The Ethernet with the provided IP Address, is used thereafter.
4. If the Installation Response Message indicates a new installation, construct and send Installation Message
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5. Receive and decode Acknowledge Message (ACK)
6. Repeat steps 1 – 3 to verify installation data is stored properly
Table 0-62Table 6-66 is an Installation Use Case example that assumes the MXS does not contain installation data (New Installation), the power on operational
mode is STBY, and the aircraft is on the ground.
Table 0-6266 Installation Use Case Example Data
Step
Message Msg
Direction
FieldName DataValues
(Hex)
Data/FunctionalDescription SDIM
Section
1 ConstructandsendaDataRequestMessagerequestingInstallationResponseMessagetodetermineifinstallationdataexistsandisvalid.TheACKmessagewillbe
returnedfirstfollowedbytheInstallationResponseMessage.
 Data
Request
Sentfrom
Host
StartByte [AA] 13.66.3.
6
MessType [05] 
MessID[03]
PacketLen [04] 
RequestMessageType[81] RequestforInstallationResponsemessage.
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Installation Message data is stored in non-volatile memory and needs to be sent only once.