Writing The Local Bluetooth ® Password; Bluetooth ® Rf-Transceiver - WAGO I/O-SYSTEM 750 Manual

160 Appendix
Response
Byte
0
1
2
3
4
5
6
7
...
17
The password is not completely displayed if too long!
If the password is longer than the available Mailbox, the excess bytes are cut off.
MBX_ PASSPHRASE _Length returns the actual length of the password.
Therefore, the real password may deviate from the password displayed.
Return values
Parameters
MBX_PASSPHRASE_Length
MBX_PASSPHRASE_Byte n
12.3.5.13 Writing the Local Bluetooth
SetLocalPassphrase, 0x52
This command is used to configure the local password. The 750-644 I/O module
calculates the "Link Key" from the local password, which is necessary during
active authentication to establish the connection and to encrypt data. The
Bluetooth
with each other.
Choosing a password
Security depends on the password you choose. The password should be as long
and random as possible. 750-644 I/O modules can only connect with each other
when they have the same settings for encryption, authentication and password.
Conditions
Mailbox size
6
-
7 6
2 2
T
Value
[4 ... 15]
Characters (ASCII) Password as ASCII representation
®
password must be identical for all devices that want to communicate
12 18 Config. Real-time Ad-hoc Master Slave
(●) (●) ●
750-644 Bluetooth
5 4
2 2 2
MBX_GETLOCALPASSPHRASE
MBX_RESULT
MBX_PASSPHRASE_Length
MBX_ PASSPHRASE_Byte 1
MBX_ PASSPHRASE_Byte 2
MBX_ PASSPHRASE_Byte 3
MBX_ PASSPHRASE_Byte 4
MBX_ PASSPHRASE_Byte 5
...
MBX_ PASSPHRASE_Byte 15
Description
Complete length of the password
®
Password
Mode
- -
Version 2.0.0, valid from FW/HW Version 03/03
WAGO-I/O-SYSTEM 750
®
RF-Transceiver
3 2 1
2 2
Device role Save
config.
● ● ●
0
2
Reboot
-
Manual