GE Industrial Solutions 6KCV301DGF - Manual (Page 28)

—————— Digital General Function Card —————— 28
GEI-100430
The defined categories in the DPRAM satisfy the following needs:
1)
DGF to access the drive parameters. These channels of connection can be divided
into two main categories:
MANUAL The manual connections allow access to all the parameters of
the Drive. The goal of this connection is to allow devices
connected to the DGF, for instance through the serial port RS-
485, to access the Drive parameters.
AUTOMATIC The automatic connections allow access to only some of the
Drive’s parameters. The goal of these connections is to allow
the DGF regulation program to manage the Drive. There are
two automatic connections:
SYNCHRONOUS The automatic synchronous connection
, called SYN DPRAM, allows access
to only the “HIGH PRIORITY”
parameters of the Drive. This
connection is managed by the DGF
from the task SYN DPRAM with all
the characteristics of this task.
ASYNCHRONOUS The automatic asynchronous
connection, called ASYN DPRAM,
allows access to only the HIGH and
LOW PRIORITY parameters of the
Drive. This connection is managed on
the DGF from the task ASYN DPRAM
with all the charac-teristics of this task.
2) DGF to manage the keypad of the Drive. This operation is executed by the structure
of connection GSTKEY.
3) Devices connected to the Drive through the optional card SBI to access the
parameters of the DGF.
4) Issue messages SLINK3 received from the Drive by the serial port RS-485 to the
DGF.
5) Management of a special status structure which allows two devices, the DGF and
Drive, to know the respective status.
6) Management of a check structure like Watch-dog which ensures a check on the
correct working of the operations.