Performance Data; Transmission Speeds Supported; Characteristic Data Of The Dp Interface - Siemens SIMATIC NET CP 443-5 Extended Manual

Program block
START (SFB 19) / STOP (SFB 20)
RESUME (SFB 21)
STATUS (SFB 22)
USTATUS (SFB 23)
CONTROL (SFC 62)
For more information on the program blocks for S7 communication, see also STEP 7 online
help or the manual /8/ (Page 43))
1.4

Performance data

1.4.1

Transmission speeds supported

The transmission speed is set with the SIMATIC STEP 7 configuration software. For the
permitted values, refer to Table 7-1 in Section 7 (Page 35)
Note
Remember the cable length
The permitted cable length must be kept to depending on the transmission speed. Refer to
the information in /4/ (Page 42)
1.4.2

Characteristic data of the DP interface

General characteristic data
No special program blocks are required for DP mode. The interfacing to the distributed I/O is
by direct I/O access or using program blocks (SFCs/SFBs) of the CPU (see /4/ (Page 42)).
Table 1- 4
Characteristic
Number of operable DP slaves
Max. size of the input area of all DP slaves
Max. size of the output area of all DP slaves
Maximum number of inputs per DP slave
Maximum number of outputs per DP slave
Max. size of the consistent area for a module
CP 443-5 Extended
Manual, 11/2018, C79000-G8976-C162-09
General characteristic data of DP mode
Application and functions
Meaning
Run a warm restart / stop on a remote device.
Run a hot restart on a remote device.
Query the device status of a remote partner.
Receive the status change of a remote device.
Query the status of the connection belonging to
an SFB instance.
Explanation / values
125
4 Kbytes
4 Kbytes
244 bytes
244 bytes
128 bytes
1.4 Performance data
17