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Use the Server Map page to set up a copy of various remote register data to a specific, unused block of Modbus registers. For example,
copy the data in register 8 from all devices to a Modbus register block. This map is also referred to as the user map.

Bit Field and Fill. Defining the Bit field allows the compiling of register contents derived from multiple sources. The source data is limited
to the number of bits represented in the bit field (a hexadecimal value) and is shifted into the position represented by ‘1’ bits in the field.

Fill bits are logically OR’ed into the result before the server presents the data. Consecutive server map entries that reference the same
server address are OR’ed together and presented at that address. Duplicate map entries referencing the same server address but not
listed in consecutive order following the first instance are skipped. No special bit field processing occurs if the bit field is set to zero. Bit
fields apply to 16-bit integer or unsigned integer server registers only.

For example, a bit field entered as 00FF indicates a need for eight bits of the Local Register, mapped to the lower portion of the Mapped
Register Number. A bit field of FF00 still indicates a need for the lower 8 bits of the Local Register, but mapped to the upper portion of the
Mapped Register Number. For example:

Local Register Contents

Bit Field

Result Copied to Mapped Register

005A

0FF0

05A0

005A

F0F0

00A0

005A

00FF

005A

FF00

5A00

1234

0F0F

0204

A second example is given below, using the Server Map screen.

The example screen image shows two local registers using the bit field to be copied to one mapped register. The result of the bit field
mapping when register 17 contains 005A and register 18 contains 003C is to map the results, 3C5A to register 500.

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