Components and Operation
English, Revision 09, Date: 13.12.2016
25
4.2.3.3.4
CAN Message Object 3 (Transmission Object)
4.2.3.3.5
CAN Message Object 4 (Reception Object)
It is possible to send commands to the antenna via Message Object 4. It has the same
ID as Message Object 1 and a length of 6 bytes.
Byte #
Length
Type
Description
1,2
2 Byte
unsigned int
System status information according to
Table 5 on page 19
3,4
2 Byte
unsigned int
the lower 16 Bit of the Transponder
code
5,6
2 Byte
unsigned int
Voltage in the sum coil generated by
the Transponder [in units]
7
1 Byte
unsigned char
Number of code readings during the
last valid Transponder crossing
8
1 Byte
unsigned char
Number of code reading errors during
the last valid Transponder crossing
Table 9
Structure of the CAN Message Object 3
Byte #
Length
Type
Description
1,2
2 Byte
Unsigned int
Command (see Table 11 below)
3,4,5,6
4 Byte
Unsigned long
Parameter (see Table 11 below)
Table 10
Structure of the CAN Message Object 4
Command
Meaning
Parameter
0000
16
No command
—
0001
16
Tune antenna once
—
0002
16
Set tuning value
Tuning value
0000.0001
16
to
0000.0010
16
0004
16
Set positioning level
Positioning level
0000.0000
16
to
0000.03E8
16
0008
16
Program transponder
Transponder code in the
range
0x0000.0000
16
to
0x000F.FFFF
16
Table 11
Coding of the commands of CAN Message Object 4