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Fisher ROC Serial Driver Help

Address Descriptions

ROC addresses are divided first by Point Type, Logical Address, and then by Parameter Index within the Point

Type. The general format is T-L.P, where:

l T: The Point Type.

l L: The Logical Address.

l P: The Parameter Index.

Parameters are blocked together on Point Type and Logical Address to a size up to 236 bytes. Some parameters

are broken down into individual bits. Those parameters are addressed as T-L.P:B, where:

l B: The Bit Offset.

For example, the address 1-50.3:2 indicates the following:

l Point Type: 1

l Logical Address: 50

l Parameter: 3

l Bit Offset: 2

For a detailed listing of all point type parameters, access, data type, length, and description, refer to the ROC

device's ROC Protocol User Manual. For more information on ROC addressing, select a link from the list below.

ROC Point Types

Logical / Point Number Details

User-Defined Point Types

Bit Assignments

ROC Point Types

The availability of point types varies by model and by how the particular unit is equipped. Points may be Physical

I/O or Internal I/O.

Physical I/O Points

Physical I/O points are one of Discrete Inputs (type 1), Discrete Outputs (type 2), Analog Inputs (type 3), Analog

Outputs (type 4) and Pulse Inputs (type 5). The logical address for physical I/O points is based on their position

in the unit, known as Point Number. There are four slots for each rack. The I/O field is not typically fully

populated.

Note: Rack and slot are ROC nomenclature; however, many ROC devices have no physical racks or slots.

Logical addresses are calculated from the Point Number reference. For information on reconciling the Point

Number to the Logical Address, refer to the table below.

ROCLINK Point Number Server Logical Address

A1-A16 0-15

B1-B16 16-31

C1-C16 32-47

D1-D16 48-63

E1-E16 64-79

... ...

For example, an I/O Point with ROCLINK 800 Point Number "A5" would be Logical Address "4". An I/O Point with

ROCLINK 800 Point Number "C5" would be Logical Address "36" by the function A + B + C5 (or 15+16+5=36).

Internal I/O Points

Internal I/O points consist of PID settings, system flags, communications parameters and other internal

information. The internal I/O logical address begins at 0 for each point type. A ROC unit may have one or several

of a given internal point type. Each point type has a specific set of parameters. ROC drivers have no array types.

Point Type Tables

ROC Point Types for ROC300-Series

ROC Point Types for FloBoss 100-Series, FloBoss 407, and FloBoss 500-Series

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