Coronis WaveCard 25mW, User Manual

Page: 40 / 67

Document : CS-SUP-MUTI-WPORTAPP-E02.sxw
➢ Frame RECEPTION_ERROR format
With this command, the local WaveCard informs its host that a problem appeared at the time of the radio
exchange.
This command is forwarded only on the serial link, between the wavecard and its host, it thus does not
require an address of recipient.
Note: The error messages are activated only if parameter EXCHANGE_STATUS is positioned with
0x01, or 0x03.
In this last case, status messages are also activated, but does not intervene in this mode, only at
the time of the sending of a message without waiting of answer (MESSAGE, and BROADCAST
mode).
 In Point-to-Point mode
RECEPTION_ERROR
HEADER CMD DATA CRC ETX
3 bytes 1 byte 1 byte 1 byte 2 bytes 1 byte
0xFF ; 0x02 ; 0x06 0x31
EXCHANGE_MODE :
= 0x01 : Point-to-Point mode
ERROR_TYPE :
= 0x01 : Distant equipment RF acknowledge
not received (useful if acknowledge
mechanism is set)
= 0x02 : Distant equipment RF response not
received.
0x03
 In Relaying mode
RECEPTION_ERROR
HEADER CMD DATA CRC ETX
3 bytes 1 byte 1 byte 1 byte 1 byte 2 bytes 1 byte
0xFF ;
0x02 ;
0x06
0x31
EXCHANGE_MODE :
= 0x02 : relaying mode
0x02
Default value for
relaying mode
RELAY_COUNTER :
= 0x03 No response from the third repeater;
= 0x02 No response from the second repeater;
= 0x01 No response from the first repeater;
= 0x00 No response from the final equipment.
0x03
In both cases, the procedure of sending an error frame depends on parameter RADIO_ACKNOWLEDGE:
 If RADIO_ACKNOWLEDGE is active, and the transmitter does not receive a radio
acknowledgement, then the request is re-emitted three times, before sending the error frame.
 If RADIO_ACKNOWLEDGE is inactive, then the error frame is sent after time-out
RADIO_USER_TIMEOUT.
WaveCard user handbook page 40 of 67