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Omnitracs Knowledge Base

Forward Binary Message - Type 604

Submitting a Forward Binary Message (Type 604)

This transaction is used to request the transmission of a binary message to one or more vehicles. The receipt of this transaction will cause QTRACS to place a call to OMCRTMSG. The parameter list will be constructed using values supplied in the transaction. Refer to the OMCRTMSG section of this document for additional information.

Forward binary message transaction format

From To Size Type Field Name
1 5 9 Packed Local GMH
6 8 3 Character Transaction Type = 604
9 18 10 Character Sender
19 19 1 Character Reserved - set to blanks
20 21 3 Packed Reserved - set to zero
22 241 220 Character Destination List
242 243 3 Packed Times to Transmit
244 244 1 Character Priority
245 245 1 Character Schedule
246 246 1 Character Return Receipt
247 247 1 Character Word Wrap
248 257 10 Character Response Indicator
258 259 3 Packed Binary Data Type
260 261 3 Packed Reserved - set to zero
262 271 10 Character Application ID
272 278 7 Character Reserved - set to blanks
279 279 1 Character Body Type Indicator
280 282 5 Packed Message Body Length
283 3132 2850 Character Message Body

Forward binary message transaction fields

Field Name Description
Local GMH This packed decimal field contains the Local GMH as assigned by the application requesting that this message be sent. Upon receipt of this transaction, QTRACS will assign a Global Message Handle. If requested, QTRACS will return that GMH to the external application defined in the Application ID field. QTRACS discards the Local GMH upon receipt.
Transaction Type This field must be set to 604.
Sender Source entity identifier. Denotes the source (sender) of the message. The source must be a simple entity: user, application or vehicle.
Destination List List of up to 20 destination entity identifiers (addressees). Each entry must be an ID of a valid user, vehicle, address list, vehicle group, or wildcard. Each entry is 11 characters long to allow for indirection (@) to be specified. The list is terminated by first blank entry. Note that to send to all users, all vehicles, or to the NMC there must be only one destination: *ALLVEH, *ALLUSR, or *NMC.
Times to Transmit Times to transmit. This field is passed through to the NMC. It is only used for components of the message that are transmitted over the OmniTRACS link. A zero value in this field will cause the NMC to transmit the message based on its internal defaults. This field should be set to zero unless there are very specific transmission requirements. Setting this field to a value other than zero may adversely affect the characteristics of the transmission priority.
Priority Message transmission priority. Valid values are:
  • 0 normal priority
  • 1 important priority
  • 2 sleepy priority
  • 3 sleepy plus priority
  • 4 low priority
  • 9 emergency priority
Schedule Schedule for off-peak (batch) transmission where:
  • 0 disable
  • 1 enable
Return Receipt This field must be set to 0.
Word Wrap This field must be set to 0.
Response Indicator This field must be set to *NONE.
Binary Data Type This field indicates the type of data that is contained in the binary message body, where:
  • 004 SensorTRACS data
  • 006 JTRACS data
  • 007 TrailerTRACS data
Application ID If the calling application would like QTRACS to return the GMH for this message, then this field should contain the registered QTRACS external application id to which the 692 transaction will be sent. See an explanation of the 692 transaction for more details. This is only necessary in a RI (remote integration) environment.
Body Type Indicator This field must be set to 'B' (binary).
Message Length This is the length (in characters) of the message as it is stored in the Binary Message Body field. The maximum length is 2850.
Binary Message Body This field contains the body of the message. It is a variable length field. The length of the field (in characters) is indicated in the Message Length field described above.
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