SEW-Eurodrive MOVIDRIVE compact MCH41A, System Manual

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System Manual – MOVIDRIVE® compact Drive Inverters
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Starting up the inverter with INTERBUS (MCH42A)
Startup
Coding examples The coding examples shown in the following sections are shown in the same way as in
the INTERBUS user manual "Peripherals Communication Protocol (PCP)" by Phoenix
Contact.
All information in a PCP service is presented word by word in column format. This
means you can regard a word as PLC word (e.g. Simatic data word). In each case, the
right column shows a coding example for the MOVIDRIVE
®
inverter.
The "Communication Reference (CR)" is used for selecting the inverter for which you
want to set the parameters. In the following examples, CR = 02 hex was assigned to the
inverter in the CMD tool. The index defines the drive parameter that should be accessed.
Device description
of the inverter in
the CMD tool
Before you can use the PCP channel of the inverter, you have to configure the device
description for the inverter in the CMD tool.
Process of a
parameterization
sequence
The peripherals communication protocol (PCP) of the INTERBUS standardizes access
to the parameter data of INTERBUS stations and prescribes the following procedure:
• Initializing the PCP connection with the "Initiate" service
• Reading or writing parameters with the "Read" and "Write" services.
• The communication link can be disconnected with the "Abort" service if it is no longer
required (the service is not described here because it is usually not required; see
PCP manual).
• Initializing the PCP connection with the "Initiate" service
The drive parameters of the inverter are not accessed until the PCP connection has
been established with "Initiate_Request". This can be done, for example, once during
system startup.
You should receive the positive message "Initiate_Confirmation_ after the service has
been sent (refer to the PCP manual in case of a negative message).
Word Meaning Coding (hex)
1 Command_Code = Initiate_Request 00 8B
2 Parameter_Count 00 02
3 - Comm._Reference 00 02
4 Password Access_Groups 00 00
Bits 15 ... 8 7 ... 0
0 0
I