Process Data (Group B And D) - Festo CPX-E-EP Manual

3 Parameterisation
3.2.3

Process data (Group B and D)

The process image of the input data (Group B) and of the output data (Group D) is composed without gaps from the
data of the modules as mounted from left to right in the system CPX-E.
The Modbus addresses also depend accordingly on the arrangement of the modules of the system CPX-E. The
Modbus addresses are arranged in ascending order without gaps i.e. n, n +1, n +2..., where n corresponds to the first
Modbus address of the module.
Bus module CPX-E-EP
Inputs
Modbus Process data inputs (Group B)
1)
address
n Result of access to the I/O
diagnostic interface
n + 1 Data from the system table
(read access)
Waiting
Request successful (8000
Error (, 8000
Write protection (8001
Writing not permitted,
reserved range (8002
Internal error (8003
n + 2 Module diagnostics data
Error number (0 ... 255)
Channel number (0 ... 63)
Number of first faulty output
channel
Number of first faulty input
channel
There is a module error
Reserved
1) n = First Modbus address of the module
Tab. 3.38
Outputs
Modbus Process data outputs (Group D)
1)
address
n Access to the I/O diagnostic
interface
n + 1 Data for the system table
(write access)
Function number
Read request
Write request
Byte value
Word value
Control bit: Write access to the
I/O diagnostic interface
1) n = First Modbus address of the module
2) Write access occurs with a rising edge (from 0 to 1).
Tab. 3.39
Festo – CPX-E-EP-EN – 2017-07 – English
Bit
15 14 13 12 11 10 9
0 0
1
0 0
) 1 0
h
)
h
) 1 0
h
1 0
)
h
) 1 0
h
0 0
1 0
0 1
1 1
Bit
15 14 13 12 11 10 9
0
1
0
1
0
1
2)
8
0 0 0 0 0 0
1 1 1 1 1 1 1
0 0 0 0 0 0
0 0 0 0 0 0
0 0 0 0 0 0
0 0 0 0 0 0
0 0 0 0 0 0
0 0 0 0 0 0
1 1 1 1 1 1
8
0 0 0 0 0 0 0
1 1 1 1 1 1 1
0 0 0 0 0
1 1 1 1 1
0
1
7 6 5 4 3 2 1
0 0 0 0 0 0
0
1 1 1 1 1
1
0 0 0 0 0 0 0
0 0 0 0 0 0 0
0 0 0 0 0 0 0
0 0 0 0 0 0 1
0 0 0 0 0 0 1
0 0 0 0 0 0
0
1 1 1 1 1
1
7 6 5 4 3 2 1
0 0 0 0 0 0 0
1 1 1 1 1 1
0 0 0 0 0 0
0
1 1 1 1 1
1
0
0
1 1
0
0
1
0
1
0
1 1
0
0
1 1
0
1 1
39