Properties / Services - Siemens CP 443-5 Extended Manual

1 Properties / Services

1 Properties / Services
Application
The CP 443-5 Extended communications processor is designed for use in a
SIMATIC S7-400 (standard) and S7-400H (fault-tolerant system) programmable
controller. It allows the S7-400 / S7-400H to be connected to a PROFIBUS fieldbus
system.
You can use the CP as a router for data records intended for field devices (for
example PA slaves).
Services
The current version of the CP 443-5 Extended supports the following
communication services in the standard and H systems:
S PROFIBUS-DP with the following characteristics:
- DP master (class 1) (redundant operation in fault-tolerant system also
possible)
- Direct data exchange (DP slave to DP slave)
As a DP master, the CP 443-5 Extended is capable of enabling direct data
exchange for "its" DP slaves.
- SYNC /FREEZE (please refer to Tables 2-1 and 2-2)
The outputs or inputs can be synchronized from the within the user program
using system function SFC11.
- Constant bus cycle time (only in the standard system)
The ability to set a constant bus cycle time means that the DP master
always starts the DP bus cycle after the same interval.
- Selectable DP modes:
DP master mode for:
S
S
(Refer to the information in Tables 2-1
and 2-2 on the required CPU)
(For more information on the topic of DPV1, refer to the STEP 7 / Hardware
Configuration online help)
B4-4
DPV1 functionality
(default in STEP 7)
DP slaves complying with the
PROFIBUS DP-V0 and DPV1
standard
Siemens DP slaves
S7-compatible
DP master mode for:
S
DP Slaves complying with the
PROFIBUS DP-V0 standard (DP
slaves complying with the DPV1
standard can only be used with
restricted functionality)
S
Siemens DP slaves
CP 443-5 Extended for PROFIBUS / Manual Part B4
C79000-G8976-C162-06
Release 6/2005