Aim MIL-STD-1553 - Apicmdrtdytagdef

MIL-STD-1553 Reference Manual
275
Chapter 8 – Remote Terminal Functions
8.1.3 ApiCmdRTDytagDef
Prototype:
AiInt16 ApiCmdRTDytagDef ( AiUInt32 ul_ModuleHandle, AiUInt8 biu, AiUInt8 con,
AiUInt16 rt_hid, AiUInt16 mode,
TY_API_RT_DYTAG rt_dytag[4] );
Driver Command:
API_RT_DYTAG_DEF (0x9D)
Purpose:
This function is used to define the generation of dynamic data words for RT transmit
SA’s. One to four words of the RT Transfmit SA Buffer for up to 255 different Buffer
headers can be selected for dynamic data generation. Dynamic data generation is
performed in the RT Transmit SA Data Buffer by the internal firmware. The RT
Transmit SA Buffer already has to be defined using the functions ApiCmdRTSACon
and ApiCmdRTBHDef when dynamic data generation is enabled.
In Function Mode the RT Transmit SA Buffer is modified (for up to 2 Data Words)
after the Data Word has been transmitted. The start value for the dynamic Data Word
function shall be within the specified upper and lower limit.
In Tagging Mode the RT Transmit SA Buffer is modified (for up to 4 Data Words)
before the Data Words are transmitted. In this mode the dynamic Data Word tagging
function can be performed directly on Data Words located in the Transmit Data Buffer
or on Function Words which are patched into the Transmit Data Buffer.
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RT Dynamic Data Generation Control
Value
Constant
Description
0
API_DIS
Disable Dynamic Data Generation
1
API_ENA
Enable Dynamic Data Generation
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RT Buffer Header ID
Note: See Section 1.3.5 for the range allowed for this parameter.
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RT Dynamic Data Generation Mode
Value
Constant
Description
0
API_DYTAG_STD_MODE
Function Mode
1
API_DYTAG_EFA_MODE
Tagging Mode