
Reference Data
A-16
SIMATIC 505 PROFIBUS-FMS CP User Manual
A.5 FMS Connection Types and Variables
When
configuring FMS connections, you must specify the connection type.
T
able
A-8 shows which job types are available for data transfer with each
connection type.
T
able A-8
FMS Connection T
ypes and Jobs Allowed
Connection Type Possible Job Types Client vs. Server
MMAC – Master-master
on acyclic connection
Read, Write, and Report
possible in both
directions.
FMS
Master FMS Master
Read
Write
Report
Read
Write
Report
MSAC – Master-slave on
acyclic connection
Read, Write, and Report
possible for the FMS
master.
FMS
Master
FMS Slave
Read
Write
Report
MSAC_SI – Master-slave
on acyclic connection
with slave initiative
Read, Write, and Report
possible for the FMS
master.
The FMS slave can also
report once the master
has assigned the
appropriate rights.
FMS
Master
FMS Slave
Read
Write
Report
Report
MSCY – Master-slave on
cyclic connection
Read, Write, and Report
possible for the FMS
master.
FMS
Master
FMS Slave
Read
Write
Report
Confirmed service
Unconfirmed service
Client function
Server function
FMS
Connection
T
ypes and Possible
Job T
ypes
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