User Manual

Table Of Contents
92 Fieldbus-specific Additions
PROFIBUS-DP
WAGO-I/O-SYSTEM 750
I/O Modules
5.4 PROFIBUS-DP
5.4.1 Process Image Access
The Bluetooth
®
module data is accessed through the process image of the
PROFIBUS master. To ensure data consistency at a data width of 12 to 48
bytes, the data must be mapped with system functions for the consistent read-
ing and writing to an appropriately large, reserved flag area. The data in this
flag area can then be processed by the control program.
5.4.1.1 Example
A node contains the following modules with input and output process image:
3 x 750-402 for every 4 bits of input data,
1 x 750-452 4 bytes of input data,
1 x 750-644 12 bytes of input and 12 bytes of output data,
1 x 750-550 4 bytes of output data,
1 x 750-452 4 bytes of input data,
1 x 750-550 4 bytes of output data,
1 x 750-452 4 bytes of input data,
1 x 750-504 4 bits of output data.
The Bluetooth
®
module uses a process image of 12 bytes with a mailbox size
of 6 bytes. The mailbox is unmasked.
The input/output configuration in the PROFIBUS master can be structured as
follows:
no. Function Module Process image of the master *
Identifier inputs outputs
Digital input EB12.0
Digital input EB12.1
Digital input EB12.2
1
Digital input
750-402 4 DI/24 V DC/3.0 ms
0x10
EB12.3
Digital input EB12.4
Digital input EB12.5
Digital input EB12.6
2
Digital input
*750-402 4 DI/24 V DC/3.0 ms
0x00
EB12.7
Digital input EB13.0
Digital input EB13.1
Digital input EB13.2
3
Digital input
750-402 4 DI/24 V DC/3.0 ms
0x10
EB13.3