Festo CPX-E Series, Описание

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3 Parameterisation
20 Festo – CPX-E-PB-EN – 2017-07 – English
3.2 Operation with the general DP master
System CPX-E can be controlled by a PLC, PC or industrial PC with a PROFIBUS DP interface according to the
PROFIBUS specification pursuant to IEC 61158.
3.2.1 Implemented functions and service access points
DSAP
1)
Function Data from master to slave Data from slave to master
NIL Data_Exchange Output data Input data
0 … 48
(0x00 … 0x30) MSAC_C2 Function for communication with a Class 2 master (e.g., PC/PG)
2)
50 … 51
(0x32 … 0x33) MSAC_C1 Function for communication with a Class 1 master (e.g., PLC)
3)
55 (0x37) Set_Slave_Add Not available
56 (0x38) RD_Inp Empty Input data
57 (0x39) RD_Outp Empty Output data
58 (0x3A) Global_Control Control –
59 (0x3B) Get_Cfg Empty Configuration
60 (0x3C) Slave_Diag Empty Leakage
61 (0x3D) Set_Prm Parameter Short Confirmation (SC)
4)
62 (0x3E) Chk_Cfg Configuration Short Confirmation (SC)
4)
1) Destination Service Access Point
2) Dynamic use and service access points are defined at the connection set-up.
3) Fixed service access points
4) Short confirmation
Tab. 3.7
3.2.2 Bus parameters and reaction times
Transmission rate [kbps] max T
SDR
[T
bit
]
1)
min T
SDR
[T
bit
]
2)
9.6
19.2
93.75
187.5 60 11
500 100
1500 150
3000 250
6000 450
12000 800
1) Maximum Station Delay Responder
2) Minimum Station Delay Responder
Tab. 3.8
3.2.3 Transmission times on PROFIBUS DP
The transmission times depend on the cycle time of the PLC and update time of the network.
Independently of structure, the delay times within system CPX-E amount to less than 1 ms.
The calculation of the overall transmission time can be found in the controller user documentation.