Operation As A Slave In "Real-Time Communication" Mode; Operation As A Master In "Ad-Hoc Communication" Mode - WAGO I/O-SYSTEM 750 Manual

40 Function Description
No data exchange when establishing a connection!
While the 750-644 I/O module establishes radio connections, any existing radio
connections are paused. Cyclic data exchange is interrupted for all slots already
connected.
Connections to failed devices can be temporarily deactivated!
Repeated attempts to reestablish failed connections may affect data exchange for
intact connections. To avoid this, individual slots can be temporarily excluded
when making a connection. For this purpose, the respective connection can be
marked as "not activated for connection" in "Real-Time Communication" mode.
This setting is stored in volatile memory and remains valid until the next restart.
Until then, the 750-644 I/O module excludes the connection concerned from
automatic connection establishment.
If all slots activated for the connection are connected, or if the wait time for
another connection attempt has not elapsed, the 750-644 I/O module exchanges
data cyclically with all connected remote 750-644 I/O modules. The timing is
monitored. If a connected slot receives no data, a warning and then error is
indicated. If a connection is completely interrupted by a remote I/O module, a
general error is indicated. The process data of the respective slot then remains
unchanged until reconnected or new data has been received. More information is
available in the sections "Process Image" and "Diagnostics".
5.2.3

Operation as a Slave in "Real-Time Communication" Mode

When operated as a slave in "Real-Time Communication" mode, the 750-644 I/O
module plays the role of a slave in the Bluetooth
the 750-644 I/O module is not visible, i.e. it does not respond to scans. After
power-on, restart in this mode or the connection is interrupted, the I/O module
waits continuously until establishment or reestablishment of the connection by the
assigned master. The assigned master is the device assigned to slot address 0x20.
Once the 750-644 I/O module configured as the master has established the
connection, both I/O modules exchange data cyclically. Monitoring the
connection status and timing is basically identical for master and slave in "Real-
Time Communication" mode where only the connection to the master is
monitored when operated as a slave.
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5.2.4

Operation as a Master in "Ad-hoc Communication" Mode

When operated as a master in "Ad-hoc Communication" mode, the 750-644 I/O
module can only be connected to Bluetooth
of a slave.
In this operating mode, the I/O module can maintain up to 6 connections. The
following conditions apply:
WAGO-I/O-SYSTEM 750
750-644 Bluetooth
®
piconet. In this operating mode,
®
SPP devices that in turn take the role
Version 2.0.0, valid from FW/HW Version 03/03
®
RF-Transceiver
Manual