12.3.6.10 Setting Qos Settings - WAGO I/O-SYSTEM 750 Manual

178 Appendix
Return values
Parameters
MBX_RESULT
MBX_QOS
_SETTINGS

12.3.6.10 Setting QoS Settings

SetConnectionQoS, 0x89
This command is used to set the settings of the "Quality-of-Service" (QoS) of a
connection. The settings only take effect when the 750-644 I/O module is
switched to the role of master.
Keep factory settings!
The master can connect to a maximum of 3 slaves QoS is enabled. QoS can only
be set for 750-644 I/O modules. It improves latency by reducing deviations
(outliers).
Because the Bluetooth
optimized for maximum performance, any effect on the timing in "Real-Time
Communication" mode is marginal. Therefore, it is recommended that you keep
the factory setting MBX_BQM_NONE.
Conditions
Mailbox size
6
●
Request
Byte
0
1
2
3
Value
MBX_CMD_OUT_OF_RANGE
MBX_CMD_INVALID_ARG
MBX_BQM_NONE (0x01)
MBX_BQM_BEST_EFFORT (0x02)
MBX_BQM_GUARANTEED (0x03) QoS is enabled in the "Guaranteed"
®
subsystem of the 750-644 I/O module has already been
12 18 Config. Real-time Ad-hoc Master Slave
● ● ●
7 6
2 2
T
MBX_TARGET_TABLE_AND_INDEX
750-644 Bluetooth
Description
No error occurred
Index too large or WAGO table not
chosen
No QoS enabled (standard)
QoS is enabled in "Best Effort" mode
mode
Mode Device role
- -
5 4 3
2 2 2
MBX_SETCONNECTIONQOS
-
MBX_QOS_SETTINGS
Version 2.0.0, valid from FW/HW Version 03/03
WAGO-I/O-SYSTEM 750
®
RF-Transceiver
Save
config.
● ● ●
2 1
2 2
Reboot
-
0
2
Manual