WAGO-I/O-SYSTEM 750 Appendix 137750-644 Bluetooth® RF-TransceiverManualVersion 2.0.0, valid from FW/HW Version 03/0312.2 Return Values of Mailbox CommandsThe following standard values are defined for the return values (MBX_RESULT)of mailbox commands:Label ReturnvalueDescriptionMBX_CMD_OK 0x00 Successful executionMBX_CMD_GENERAL_ERROR 0x01 General errorMBX_CMD_DENIED_UNKNOWN 0x02 Unknown commandMBX_CMD_OUT_OF_RANGE 0x03 Values outside of the valid range(overrun or underrun)MBX_CMD_INVALID_ARG 0x04 False or invalid argumentMBX_CMD_INTERNAL_ERROR 0x05 Internal errorMBX_CMD_TIMEOUT 0x06 Time overrun of the commandMBX_CMD_DENIED_NOT_APPLICABLE 0x07 Prerequisites for command notfulfilled: false operation mode,false device role or necessaryprecursor command not executedMBX_CMD_DENIED_NOT_IMPLEMENTED 0x08 Command reserved for laterimplementationMBX_CMD_DENIED_MBX_TOO_SMALL 0x09 Mailbox too small for returnvalueMBX_CMD_DENIED_BUSY 0x0A Current or precursor commandbeing executed, no valid data isavailable yet. Recommendation:call up command again after ashort waiting period.MBX_CMD_INVALID 0x0B System or network configurationis defectiveAll Mailbox commands use these return values to signal the status of thecommand execution. If individual return values offer additional interpretations forspecific Mailbox commands, this is explained in more detail in the description ofthe respective command.In principle, the first return value with a mirrored mailbox command and togglebit is considered a valid response. As soon as this happens, the next mailboxcommand can be executed. Many commands result in a restart of the 750-644 I/Omodule. If a Mailbox command that triggers a restart is not replaced by anothercommand after receiving the response, the 750-644 I/O module recognizes theunaltered, existing command when it restarts. The command is rejected withMBX_CMD_DENIED_BUSY to prevent an endless loop of resets. This offersthe possibility of determining the successful conclusion of a reset by monitoringchange of the return value.Pos : 104.2 /D okumentati on allgemei n/Gli ederungsel emente/---Seitenwec hs el--- @ 3\mod_1221108045078_0.doc x @ 21810 @ @ 1
