Performance data and behavior in operation
5.7 Parallel use of communications services (multiprotocol mode)
CP 342-5 / CP 342-5 FO
Manual, 10/2011, C79000-G8976-C146-09
31
Note the following limits:
Characteristic
Explanation / values
Number of operable connections in total:
in operation with PROFIBUS DP
(DP master with up to 15 DP slave
1)
)
44 maximum
Of these, up to 16 FDL connections and 12 S7
connections and 16 OP connections in multiplex
mode.
in operation without PROFIBUS DP
48 maximum
1) The number of S7 connections that can be operated when using the module as DP master depends
on the number and configuration of the assigned DP slaves (see table below).
Influence of the data length in S7 communication
In S7 communication, the data length of the jobs and in DP mode, the number of DP slaves
and the length of the I/O data mean the following restrictions:
●
Number of S7 connections
●
Number of jobs that can be sent at one time
The decisive factor is the job with the highest data length.
The information in the following table applies to S7 job types BSEND/BRCV, PUT/GET, and
USEND/URCV.
Data length in bytes
1)
Number of S7 connections or number of S7 jobs
S7 communication only With DP master and 32
DP slaves ET200B
(1 byte I data and 1
byte Q data)
With DP master and 32
DP slaves ET200M
(32 byte I data and 32
byte Q data)
<=1000
16
10
8
2000
16
8
6
4000
16
6
5
8000
8
4
4
16000
4
2
2
32000
2
1
1
1) A maximum of 32 Kbytes can be transmitted with one BSEND/BRCV block, with
PUT/GET/USEND/URCV a maximum of 160 bytes in each case.
Содержание CP 342-5
Страница 6: ...Product overview and notes CP 342 5 CP 342 5 FO 6 Manual 10 2011 C79000 G8976 C146 09 ...
Страница 14: ...Requirements for use 2 3 Programming CP 342 5 CP 342 5 FO 14 Manual 10 2011 C79000 G8976 C146 09 ...
Страница 22: ...Displays and operator controls 4 2 Mode selector CP 342 5 CP 342 5 FO 22 Manual 10 2011 C79000 G8976 C146 09 ...
Страница 50: ...References B 3 On programming CP 342 5 CP 342 5 FO 50 Manual 10 2011 C79000 G8976 C146 09 ...
