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1-2
1-1 Functions
The 3G3FV-PDRT1-SIN CompoBus/D Communications Card is a dedicated communications interface
card that makes it possible for the SYSDRIVE 3G3FV High-function General-purpose Inverter to com-
municate with SYSMAC Programmable Controllers. Installing a CompoBus/D Communications Card in
the SYSDRIVE 3G3FV Inverter permits a Programmable Controller to monitor RUN/STOP and operat-
ing conditions, and to make changes in set values.
3G3FV-PDRT1-SIN
CompoBus/D Communications Card
H Easy Communications
The following two functions can be used simultaneously in CompoBus/D communications between the
CPU Unit of a SYSMAC PC and the SYSDRIVE 3G3FV Inverter.
S Remote I/O Communications
I/O is automatically transferred between Slaves and the CPU Unit without any special program-
ming in the CPU Unit. (Automatically transmits Inverter control inputs such as RUN or STOP from
a SYSMAC PC to the SYSDRIVE 3G3FV Inverter and returns operation status of the Inverter or
output frequency monitor data. )
S Message Communications
Message communications are performed between a CPU Unit to which a Master Unit is mounted
and Slaves (SYSDRIVE 3G3FV Inverters) by executing specific instructions (such as CMND
and IOWR, depending on the model of SYSMAC PC used) from the program in the CPU Unit.
(Allows some parameter setting and monitoring, Inverter output frequency, output voltage, or
output current. If the remote I/O communications is not performed, Inverter control data such as
RUN or STOP can be input through this message communications function.)
Remote I/O communications for the CompoBus/D Communications Card are performed using either 4
or 6 words allocated in the I/O Area of the SYSMAC PC. The Inverter can be controlled using remote I/O
communications because the basic control I/O functions, frequency setting functions, and output fre-
quency monitoring functions are assigned to remote I/O. The allows the Inverter to be controlled
through simple I/O processing.
H Communications with SYSMAC C200HX/HG/HE and CV-series PCs
The CompoBus/D communications system is supported by both SYSMAC C200HX/HG/HE and CV-se-
ries Programmable Controllers. Up to twice as many Inverters can be connected in comparison to SYS-
MAC BUS Remote I/O Systems to support even larger control systems.
Note 1. The maximum number of nodes that can be connected to the system depends on the type of
Master Unit used, whether the message function is used, and the number of words used by
remote I/O communications. See 1-3 CompoBus/D System Configuration for further details.
Functions and System Configuration Chapter 1