5 Configuring Communication Connections
A-154
S7-CPs for Industrial Ethernet Configuring and Commissioning
Release 01/2007
C79000-G8976-C182-07
5.8 FETCH/WRITE Mode
FETCH/WRITE
The FETCH/WRITE services allow direct access to the system memory areas on
the SIMATIC S7 CPU from SIMATIC S5, SIMATIC PC stations, or from devices of
other ranges.
FETCH: Read data directly
WRITE: Write data directly
Connection Types
The FETCH/WRITE services can be configured and used in SIMATIC S7 on the
following connection types:
ISO transport connections
ISO-on-TCP connections
TCP connections
Configuration
Depending on the station type, the following modes can be configured for the
connection endpoint:
SIMATIC S7 Station: FETCH PASSIVE / WRITE PASSIVE
If you select the FETCH PASSIVE or WRITE PASSIVE mode for the ISO
transport connection, you can access the system areas on a SIMATIC S7 PLC
from a SIMATIC S5 station or other non-S7 station (unspecified connection).
To Next Page
Loading...
Need help?
General
