PLX30 Series
Configuring Your Gateway
Ethernet and Serial Gateways
User Manual
ProSoft Technology, Inc.
Page 27 of 200
September 19, 2012
2.6
Using the CommonNet Data Map
Note:
This is an advanced configuration feature and is
not
required for the basic operation of the
gateway.
The
Data Map
section allows data to be copied between areas in the gateway's
internal database.
The Data Map is especially useful for copying protocol-specific error and status
data from the gateway’s upper memory registers (address 4000 and up) to the
user-accessible memory registers (addresses 0 to 3999). The error and status
data copied into the user memory area can then be accessed by a remote
device, such as an HMI or processor.
Information about upper memory addresses where the gateway places protocol-
specific error and status data can be found in the Diagnostics section in the
appropriate protocol chapter of this manual:
(page 183)
The Data Map can also be used to condense widely dispersed data into one
contiguous data block, for simplified access.
A maximum of 100 registers per
Data Map
command can be copied, and a
maximum of 200 separate copy commands can be configured.
The byte and/or word order can be rearranged during the copy process. For
example, by rearranging byte or word order, floating-point values can be
converted to the correct format for a different protocol.
