Specifications

FL-MDS-CAB.2
MOD-MDS.1 ***Confidential*** 16 of 28
B0
B1
B2
B3
B4
B5
B6
B7
Carrier Id read on Antenna B
Presence
on AB
CRC
Error/warning
byte 0
Error/warning
byte 1
LSB
…
…
MSB
1/0
CRC
value
LSB
MSB
7.5.2.1 TPDO1s Example
TPDO1
B0
B1
B2
B3
B4
B5
B6
B7
0xC9
0xC7
0x05
0x44
0x01
0xC0
0x00
0x00
The tag with Id 0x4405C7C9 has been read on antenna A, the CRC is 0xC0, no error
TPDO1
B0
B1
B2
B3
B4
B5
B6
B7
0xC9
0xC7
0x05
0x44
0x00
0xC0
0x00
0x00
The tag with Id 0x4405C7C9 has left antenna A, the CRC is 0xC0, no error
7.5.3 TPDO3
TPDO3 messages are sent by CAB to communicate a state change. For example, a TPDO3 is sent when one
of the antennas is activated or deactivated, when the autocalibration of the sampling time is completed,
when the power voltage goes under the (nominal 24 V value – 20%) threshold and so on.
TPDO3
B0
B1
B2
B3
B4
B5
B6
B7
Unused
Antennas
status
Unused
Unused
Error/warning
byte 0
Error/warning
byte 1
Unused
Unused
Antennas status are encoded in Byte 1, the lower 4-bit nibble encodes Antenna A status, the higher 4-bit
nibble encodes Antenna B status (if present):