180 Appendix WAGO-I/O-SYSTEM 750750-644 Bluetooth® RF-TransceiverManualVersion 2.0.0, valid from FW/HW Version 03/03Return valueParameters Value DescriptionMBX_RECONNECTTIME [0 … 65535] Minimum time interval in seconds between twoattempts to reestablish a connection when theprevious attempt has failed (value 0: no waitingbetween two attempts).12.3.6.12 Setting the Time Setting – Between Two Attempts to Establish aConnectionSetReconnectionTimePeriod, 0x8BThis command is used to set the waiting time for the master between two attemptsbefore a new attempt to establish a connection with a slave is undertaken. Thesettings only take effect when the 750-644 I/O module is switched to the role ofmaster.When establishing a network in “Communication” mode, the master first attemptsto connect all allowed slaves. If unsuccessful, it begins the data exchange, firstwith the devices that could be connected. It then scans again for the devicesoriginally not found at a configured time interval. A similar scenario applies forthe failure of slaves; in this case, the master first attempts to reconnectimmediately and repeats these attempts periodically if it does not succeed.750-644 I/O modules configured as slaves continuously attempt to connect in“Communication” mode.Communication dropsWhen connecting to slaves, the master is not available for data exchange. Ifallowed slaves have failed continuously, the remaining network membersexperience communication interruption times within the time interval of the“ReconnectionTimePeriod” until the failed device is ready again. In “Real-TimeCommunication” mode, 750-644 I/O modules provide information on suchinterruption times through the cyclical and acyclical diagnostic function. Fortime-critical applications, it is possible to temporarily “eject” failed slaves byapplying the function “UnbindRemoteDevice” to them in “Communication”mode.ConditionsMailbox size Mode Device role Saveconfig.Reboot6 12 18 Config. Real-time Ad-hoc Master Slave● ● ● ● - - ● ● ● -RequestByte 2 7 2 6 2 5 2 4 2 3 2 2 2 1 2 00 MBX_SETRECONNECTIONTIMEPERIOD1 T -2 MBX_RECONNECTTIME (LSB)MBX_RECONNECTTIME (MSB)
