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Rockwell Automation 1794-APB/B FLEX I/O PROFIBUS Adapter Module User Manual User Manual

Page 84

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2–64

How Communication Takes Place and I/O Image Table Mapping

Publication 1794ĆUM057B-EN-P - November 2001

1203ĆFM1 - SCANport Module Image Table Mapping

0

Connection Status Channel 1

Logic Status Channel 1

Analog Feedback Channel 1

Logic Status Channel 2

Analog Feedback Channel 2

Connection StatusChannel 2

Module Image

I/O Image

6 Words

5 Words

Read

Write

1 Word

Connection Enable Channel 2 Connection Enable Channel 1

Logic Command Channel 1

Analog Reference Channel 1

Logic Command Channel 2

Analog Reference Channel 2

Not Used

Connection Status Word Definition

Connection Status Channel 2

Connection Status Channel 1

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

Bit:

Not Used V2

ID2

Not Used

V1

ID1

Description

V1

SCANport channel 1 valid data bit. When high (1), the Logic Status

and Analog Feedback values are valid and can be used. When low

(0), the values should not be used.

ID1

SCANport channel 1 connected peripheral port ID number. This three

bit field contains the port number that channel 1 is connected to on the

SCANport device. It should contain a value between 1 and 7. If this

field is 7, then the channel is not connected to the SCANport device, or

the SCANport device may not be powered.

V2

SCANport channel 2 valid data bit. When high (1), the Logic Status

and Analog Feedback values are valid and can be used. When low

(0), the values should not be used.

ID2

SCANport channel 2 connected peripheral port ID number. This three

bit field contains the port number that channel 2 is connected to on the

SCANport device. It should contain a value between 1 and 7. If this

field is 7, then the channel is not connected to the SCANport device, or

the SCANport device may not be powered.

Logic Status/Analog Feedback Definition

The Logic Status and Analog Feedback values are defined within the product
manuals of the connected SCANport device(s).