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System Manual – MOVIDRIVE® compact Drive Inverters
10
Starting up the inverter with INTERBUS (MCH42A)
Startup
Establishing the
communication
connection with
"Initiate"
The "Initiate" PCP service establishes a communication connection for exchanging
parameters between an INTERBUS interface module and the MOVIDRIVE
®
inverter.
Connection is always established by the INTERBUS interface module. While the
connection is being established, various agreements concerning the communication link
are checked, such as supported PCP services, user data length, etc. After the
connection has been established successfully, the inverter responds with a positive
"Initiate-Response." If the connection could not be established, then the agreements for
the communication connection on the INTERBUS interface module do not match those
on the MOVIDRIVE
®
inverter. The inverter answers with "Initiate-Error-Response." In
this case, compare the configured communications relations of in the INTERBUS
interface module with that of the inverter.
Any attempt to re-establish an existing communication connection generally results in
an abort. The communication connection will then no longer exist so the "Initiate" PCP
service must be executed a third time to re-establish communication.
Disconnecting the
the communica-
tion connection
with "Abort"
The "Abort" PCP service breaks off an existing communication connection between the
INTERBUS interface module and the MOVIDRIVE
®
inverter. Abort is an unconfirmed
PCP service that can be triggered by the INTERBUS interface module and by
MOVIDRIVE
®
.
Reading
parameter values
with "Read"
The "Read" PCP service gives the INTERBUS interface module read access to all
communication objects (drive parameters) of the MOVIDRIVE
®
inverter. All drive
parameters and their codes are listed in detail in the MOVIDRIVE
®
Fieldbus Unit Profile
and Parameter List documentation.
Writing parameter
values with "Write"
The PCP service "Write" is used to grant the INTERBUS interface module write access
to all MOVIDRIVE
®
drive parameters. If a drive parameter is accessed incorrectly (e.g.
value is too high), the inverter generates a "Write Error Response" with exact
information on the cause of the error.
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Summary of Contents for MOVIDRIVE compact MCH41A
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