Backplane69 Parameter - ProSoft Technology CompactLogix MVI69E-MBS User Manual

MVI69E-MBS ♦ CompactLogix™ Platform
Modbus Serial Enhanced Communication Module

6.2.2 Backplane69 Parameter

This section contains general module configuration parameters, including
database allocation and backplane transfer options.
In the ProSoft Configuration Builder (PCB) tree view, double-click on the
B
ACKPLANE
Parameter
Read Register Start
Read Register Count
Write Register Start
Write Register Count
Backplane Fail Count 0 to 65536
Error/Status Block
Pointer
Initialize Output Data
Block Transfer Size
ProSoft Technology, Inc.
69 icon.
Value
0 to 5000
0 to 5000
0 to 5000
0 to 5000
-1 to 5000
Yes or No
60, 120 or 240
Description
Specifies the start of the Read Data area in
module memory. Data in this area is transferred
from the module to the processor.
Specifies the size of the Read Data area.
Specifies the start of the Write Data area in
module memory. Data in this area is transferred
from the processor to the module.
Specifies the size of the Write Data area.
Specifies the number of consecutive backplane
transfer failures that can occur before
communications are halted.
Starting register location in the module's database
for the error/status table. If a value of -1 is
entered, the error/status data is not placed in the
database. This data must be placed in the Read
Data Range of module memory.
This data includes the module version information
and all server error/status data. Refer to
MBS.STATUS (page 64) for more information.
This parameter determines if the input image data
and the module's Read Register Data values are
initialized with Read Register Data values from
the processor. If you set the parameter to No, the
Read Register Data values in the module are set
to 0 upon initialization. If you set the parameter to
Yes, the data is initialized with Read Register
Data values from the processor. This option
requires associated ladder logic to pass the data
from the processor to the module.
Specifies the number of words in each block
transferred between the module and processor.
Legacy Mode
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