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Lexicon
PARAM_TYPE_CSTR13
PARAM_TYPE_UINT32
PARAM_TYPE_BOOLEAN
PARAM_TYPE_INT8
PARAM_TYPE_BRANCH
PARAM_TYPE_INT16
PARAM_TYPE_CSTR20
PARAM_TYPE_ARRAY
PARAM_TYPE_ARRAYITEM
Value:
The data value transmitted is dependent on the ParamType, as described above.
The Data Value is always packed starting at the Value[0] byte in the packet. For
multi-byte data, the values are packed LSB first(Value[0]) to MSB(Value[0+(num
bytes-1)]). For example: Setting a given signed 16 bit parameter to a value of -
300 the data array would be packed as follows:
Value[0] = 0xd4
Value[1] = 0xfe
Value[2 - 13] = don't care.
All signed values are in the 2's compliment format.
7.3.14.3 Data Validation
The ParamId must be a valid Parameter. The ParamType must be valid for the given ParamId. If
either of these condition is not true the RV-8 will respond with a NAK packet and error code DC _
INVALID_PARAM_ID. The data value size cannot exceed the size of a given data type. A value
that does exceed the size of a give data type will be truncated to the appropriate size. The
ParamType transmitted must match the ParamType for the Parameter being transmitted, as per
the Parameter Definition as transmitted by the MC_SYS_PARAM_DEF_PKT . If the types do not
match The RV-8 will transmit a NAK packet with a DC_INVALID_INPUT error code. The RV-8
will transmit a NAK packet with a DC_ERR_READ_ONLY error code for read only parameters.
7.3.15 Set Parameter Value by Id, No Run
RV-8 Set Parameter by Id command sets the parameter value equal to the value sent in the
command packet and does not run the appropriate functional changes associated with changing
the given parameter.
RV-8 Serial Communications Protocol
3
Zero terminated string of 13
ascii characters
4
Unsigned 32 bit integer (0 to
4,294,967,295 )
5
Boolean (0 to 1)
6
Signed 8 bit integer
(-127 to 128)
7
Parameter Branch
8
Signed 16 bit integer
(-32,767 to 32,768)
9
Zero terminated string of 20
ascii characters
10
Unsigned 16 bit number
representing the number of
elements in the array, another
16 bit number representing the
number of bytes in an
ArrayItem
11
Unsigned 16 ParamId,
Unsigned 8 bit ParamType,
Unsigned 16 ArrayItem Index,
Unsigned 8 Databytes 0 to
128
14
4
1
1
N/A
2
21
4
133
25
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