WAGO-I/O-SYSTEM 750
I/O Modules 247
758-874/000-131 WAGO-I/O-IPC-C6
Manual
Version 1.0.0
18.2.5.14 Bluetooth
®
RF-Transceiver
750-644
The size of the process image for the
Bluetooth
®
module can be adjusted to 12, 24
or 48 bytes.
It consists of a control byte (input) or status byte (output); an empty byte; an
overlay able mailbox with a size of 6, 12 or 18 bytes (mode 2); and the
Bluetooth
®
process data with a size of 4 to 46 bytes.
Thus, each
Bluetooth
®
module uses between 12 and 48 bytes in the process image.
The sizes of the input and output process images are always the same.
The first byte contains the control/status byte; the second contains an empty byte.
Process data attach to this directly when the mailbox is hidden. When the mailbox
is visible, the first 6, 12 or 18 bytes of process data are overlaid by the mailbox
data, depending on their size. Bytes in the area behind the optionally visible
mailbox contain basic process data. The internal structure of the
Bluetooth
®
process data can be found in the documentation for the
Bluetooth
®
750-644 RF
Transceiver.
The mailbox and the process image sizes are set with the startup tool WAGO-I/O-
CHECK
.
Table 121: Bluetooth
®
RF-Transceiver 750-644
Input and Output Process Image
Byte Destination
Offset
High Byte
Low Byte
Description
0 -
C0/S0 not
used
Control/status
byte
1 D1
D0
2 D3
D2
3 D5
D4
... ...
...
max.
23
D45 D44
Mailbox (0, 3, 6 or 9 words) and
Process data (2-23 words)