User Manual

164 • Appendix
Mailbox Command References
WAGO-I/O-SYSTEM 750
I/O Modules
6.3.5.34 Set Time Settings - Between Two Attempts to Establish a Connection
(SetReconnectionTimePeriod, 0x8B)
This command sets the waiting time for the master between two attempts be-
fore attempting to establish a new connection with a slave. The settings do not
take effect until the module is switched over to master mode.
When establishing a network in communication mode, the master first at-
tempts to connect all authorized slaves. If this does not succeed, it begins the
data exchange, starting with the devices that could be connected. It then
searches again for the devices originally not found within the configured time
interval. A similar scenario applies for the failure of slaves; in this case, the
master first attempts to reconnect immediately and repeats these attempts pe-
riodically if it does not succeed immediately. In communication mode,
WAGO Bluetooth
®
modules are continually attempting to connect to each
other.
Note
During connection establishment to slaves, the master is not available for
data exchange. If authorized slaves have failed permanently, the remaining
network members experience communication interruption times within the
time interval of the "ReconnectionTimePeriod" until the failed device is
ready again. In the real-time profile, WAGO devices provide information on
such interruption times through the cyclical and acyclical diagnostic function.
For time-critical applications, it is possible to temporarily "eject" failed
slaves by applying the function "UnbindRemoteDevice" to them.
Conditions
Mailbox size Operating mode/profile Device role
6 12 18 Config.
Real-
time
Ad hoc Master Slave
Save
config.
Restart
● ● ● ● - - ● ● - -
Request
Byte 2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
0 MBX_SETRECONNECTIONTIMEPERIOD
1 T -
2 MBX_RECONNECTTIME (LSB)
3 MBX_RECONNECTTIME (MSB)