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Using ProSoft Configuration Builder PLX3x Series ♦ Multi-Protocol Gateways
User Manual
Page 26 of 215 ProSoft Technology, Inc.
January 25, 2018
2.7.1 From Address
0 to highest Status Data address
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.
2.7.2 To Address
0 to 3999
Specifies the beginning destination register address for the copy operation. This
address must always be within the user data area. Make sure you specify a
destination address that does not overwrite data that is stored in memory by one
of the communication protocols running on the gateway.
2.7.3 Register Count
1 to 100
Specifies the number of registers to copy.
2.7.4 Swap Code
N
O
C
HANGE
, W
ORD
S
WAP
, W
ORD AND
B
YTE
S
WAP
, B
YTE
S
WAP
You may need to swap the order of the bytes in the registers during the copy
process in order to change the alignment of bytes between different protocols.
Use this parameter when dealing with floating-point or other multi-register values,
because there is no standard for storage of these data types in slave devices.
Swap Code Description
No Swap
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)
Bytes The bytes in each word are swapped (1234 = 2143)
2.7.5 Delay Preset
This parameter sets an interval for each Data Map copy operation. The value for
the Delay Preset is not a fixed amount of time. It is the number of firmware scans
that must transpire between copy operations.
The firmware scan cycle can take a variable amount of time, depending on the
level of activity of the protocol drivers running on the gateway and the level of
activity on the gateway's communication ports. Each firmware scan can take from
one to several milliseconds to complete. Therefore,
Data Map copy operations
cannot be expected to happen at regular intervals.