WAGO I/O-SYSTEM 750 Manual page 109

WAGO-I/O-SYSTEM 750
®
750-644 Bluetooth RF-Transceiver
11. Use the app to send a character string from the smartphone to the 750-644
I/O module, e.g. the character "a".
The value "0x16" must be visible in the process image of the inputs at the first
position of the slot (byte 2). Signaling "0x02 – RR – Receive request", "0x04 –
CS – Connection established" and "0x10 – LEN=1 – 1 byte data received" are
encoded in this value. The following byte should now contain the ordinal numbers
of the transmitted string ("0x61").
12. Invert bit RA (Receive acknowledgement) in the control byte of the ad-hoc
slot for the 750-644 I/O module to signal successful acquisition of the data.
In this example, you should write byte 2 in the output process image with
the value "0x02".
You can now exchange other data between the smartphone and 750-644 I/O
module.
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Manual
Version 2.0.0, valid from FW/HW Version 03/03
Example Configuration 109