Process Image - WAGO I/O-SYSTEM 750 Manual

2.1.1.8 Process Image

Process data communication using the Bluetooth
requested, processed in a fixed sequence and exchanged between master and
slaves.
For configuration, diagnosis and register communication, data is transmitted
acyclically between modules and locally connected applications - but not
wirelessly (see Figure 8).
Both the cyclic and acyclic communication share a transmission channel - the
process image.
WAGO-I/O-CHECK
WAGO-I/O-
Figure 8: Cyclic and acyclic communication
The size of the process image for the Bluetooth
size, 12, 24 or 48 bytes. The process image contains 2 bytes of control infor-
mation consisting of a control / status byte and an internally used byte.
The mailbox is superimposed in a size of 6, 12 or 18 bytes on the Bluetooth
process data as long as the control bit (0x20) is set.
Mailbox and process image sizes are set either via startup tool WAGO-I/O-
CHECK or by using WAGO-I/O-PRO CAA over the address 0 in the parame-
ter channel.
Table 10 explains the breakdown of the data in process data and register com-
munication.
WAGO-I/O-SYSTEM 750
I/O Modules
Fieldbus
PRO
CAA
Configuration,
Diagnostics
(acyclic)
®
Bluetooth ® Bluetooth
Module Module
Process data exchange
(cyclic)
®
module can be set as a fixed
I/O Modules
Special Modules
protocol is cyclic. Data is
Fieldbus
®
WAGO-I/O-CHECK
PRO
WAGO-I/O-
Configuration,
Diagnostics
(acyclic)
• 31
CAA
g064407e
®