ProSoft Technology PLX31-EIP-SIE - Manual (Page 26)

Configuring Your Gateway PLX3x Series
User Manual Ethernet and Serial Gateways
Page 26 of 218 ProSoft Technology, Inc.
September 17, 2014
The following illustration shows an example Data Map.
The following table describes the parameters for configuring the Data Map.
Parameter Value Description
From Address 0 to highest
Status Data
address
This parameter specifies the beginning internal database
register address for the copy operation. This address can be
any valid address in the User Data Area or the Status Data
Area of the gateway.
To Address
0 to 3999
This parameter specifies the beginning destination register
address for the copy operation. This address must always be
within the User Data registers area. A destination address
must be specified that will not overwrite data that has been
stored in memory by one of the communication protocols
running on the gateway.
Register Count 1 to 100 This parameter specifies the number of registers to copy.
Swap Code
No Change
Word Swap
Word and Byte
Swap
Byte Swap
The order of the bytes in the registers may need to be
swapped during the copy process in order to change the
alignment of bytes between dissimilar protocols. This
parameter is helpful when dealing with floating-point or other
multi-register values, as there is no standard method of
storage of these data types in slave devices.
No change: No change is made in the byte ordering (1234 =
1234)
Word Swap: The words are swapped (1234=3412)
Word and Byte Swap: The words are swapped, then the
bytes in each word are swapped (1234=4321)
Byte Swap: The bytes in each word are swapped
(1234=2143)
Delay Preset This parameter sets an interval for each Data Map copy
operation. The value that is specified for the Delay Preset is
not a fixed amount of time. It is the number of firmware scans
that must transpire between copy operations.