Siemens CP 342-5 - 1.3 Communications services

Application and functions
1.3 Communications services
CP 342-5 / CP 342-5 FO
10 Manual, 07/2017, C79000-G8976-C146-10
1.3
Communications services
Supported communications services
The current version of the CP 342-5/342-5 FO supports the following communications
services:
●
PROFIBUS DP
– as DP master class 1 (PROFIBUS DP according to EN 50170 DPV0, DP master)
– as DP slave (PROFIBUS DP according to EN 50170 DPV0, DP slave)
Note
DP master or DP slave
Please note, however: The CP 342
-5/342-5 FO supports operation as a DP master or
DP slave only as alter
natives. You can also deselect DP mode altogether.
●
S7 communication and PG/OP communication
– PG functions with uploading / downloading of FM modules, configuration / diagnostics
and routing
– Operator control and monitoring functions (HMI)
Multiplexing TD/OP connections
When multiplexing OP connections, the following acyclic services are supported:
- read once
- write once
- read system status list
– Client and server for data exchange via communication blocks on S7 connections
configured at both ends
The following blocks / functions are available:
BSEND FB 12, BRCV FB 13,
PUT FB 14, GET FB 15
USEND FB 8, URCV FB 9
C_CNTRL FC 62
You will find a more detailed description in /5/ (Page 48)
Note
The partner station can be an S7
-300, S7-400 or PG/PC application with SIMATIC
NET OPC server; raw data tags using BSEND/BRECV to WinCC are not supported.
– Server for data exchange on connections configured at both ends without
communications blocks on the S7-300 / C7-300 station
●
Open communications services (SEND/RECEIVE interface) over FDL connections of the
following type:
– Specified FDL connections