MVI56-BDW
♦
ControlLogix Platform
Module Configuration
BARDAC Drive Web Interface
Page 36 of 82
ProSoft Technology, Inc.
September 4, 2008
Parameter Range
Description
Poll Interval
0 to 65535
This parameter specifies the minimum interval to execute continuous
commands (Enable code of 1). The parameter is entered in units of 1/10
th
seconds. Therefore, if a value of 10 is entered for a command, the command
will execute no more frequently than every 1 second.
Swap Code
0 or,1
This parameter defines if the data received from the Server is to be ordered
differently than received from the Server device. This parameter can be set to
order the register data received in an order useful by other applications. The
following table defines the values and their associated operations:
Swap Code
Description
0
None - No Change is made in the byte ordering
(1234 = 1234)
1
Bytes - The bytes in each word are swapped
(1234=2143)
Node IP
Address
xxx.xxx.xxx.xxx
The IP address of the device being addressed by the command.
Function Code
0 or 1
This parameter specifies the BARDAC DW function to be executed by the
command. The following table defines the purpose of each function supported
by the module.
Function Code
Description
0
Get (read data)
1
Set (write data)
Device Address
This parameter specifies the PIN value for the data value or parameter to be
considered by the command. Refer to the drive manual for a complete listing
of valid PIN's for your specific application.
2.2.3 Command
List
Overview
In order to interface the MVI56-BDW module with BARDAC-DW capable drives,
you must construct a command list for each of the four clients. The commands in
the list specify the Server device to be addressed, the function to be performed
(get or set), the data area in the device to interface with and the registers in the
internal database to be associated with the device data. The Client Command
List supports up to 100 commands for each client. The command list is
processed from top (command #0) to bottom independently by each client. A poll
interval parameter is associated with each command to specify a minimum delay
time in tenths of a second between the issuance of a command. If the user
specifies a value of 10 for the parameter, the command will be executed no more
frequently than every 1 second.
Write commands have a special feature, as they can be set to execute only if the
data in the write command changes. If the register data values in the command
have not changed since the command was last issued, the command will not be
executed. If the data in the command has changed since the command was last
issued, the command will be executed. Use of this feature can lighten the load on
the network. In order to implement this feature; set the enable code for the
command to a value of 2.
