
32
MOVIDRIVE
®
PROFIBUS DFP11A
4
The PROFIBUS-FMS
Interface
4
The PROFIBUS-FMS Interface
With the DFP11 option the MOVIDRIVE
®
drive inverter offers an FMS interface conforming to DIN
19245 Part 2.
4.1
FMS Services
With the DFP11 option, the MOVIDRIVE
®
drive inverter supports the FMS services shown in Fig.
31. These FMS services conform to the definitions in the sensor/actuator profile. As mostly only
the READ and WRITE services as well as the establish link and abort link services are used for
communication with the MOVIDRIVE
®
drive inverter, only these will be discussed below. For more
detailed information please refer to DIN 19245 Part 2.
01077AEN
Fig. 31: FMS services supported by the MOVIDRIVE
®
drive inverter
4.1.1 Initiate
With the FMS service Initiate (establish link), a communications link is established between an
FMS master and the MOVIDRIVE
®
drive inverter.
The establishment of the link is always performed by the FMS master. As the link is being estab-
lished, various conventions regarding the communications link are checked, e.g. FMS services
supported, user data length, etc. If the link is successfully established, the drive inverter answers
with a positive Initiate Response.
If the link could not be established, then the conventions regarding the communications link
between the FMS master and MOVIDRIVE
®
drive inverter do not match. The drive inverter will
answer with an Initiate Error Response. In this event, compare the configured communications
relationship list of the FMS master with that of the drive inverter.
The attempt to establish an already existing communications link again generally leads to Abort.
The communications link will then no longer exist so the FMS service Initiate will have to be per-
formed again to reinstate the communications link.
Initiate
Abort
Abort/Reject
Identify
Get-OV
Status
Read
Write
PROFIBUS-FMS
E
Q
FMS-Master
e. g. higher level automatic system
DP-/FMS-Slave
e. g. MOVIDRIVE
®