Rockwell-automation 1738-SSIM23 ArmorPoint I/O SSI Absolute Encoder Mo Manual de usuario descargar pdf (Pagina 8)

Publication 1738-IN013A-EN-E - June 2004

8 ArmorPoint I/O Synchronous Serial Interface (SSI) Absolute Encoder Module, Series A

Communicate With

Your Module

The 1738-SSIM23 module transmits SSI sensor data over the

DeviceNet™, ControlNet™, Ethernet

, and PROFIBUS network. Data

can be exchanged with the master through a polled, cyclic, or

change-of-state connection. The module produces 10 byes of data and

consumes 2 bytes of data.

Default Data Map for the ArmorPoint Absolute Encoder Module

1738-SSIM23

Message Size: 10 Bytes

Consume and Produce Bit/Byte Definitions

Byte Bit Description

Produce 0 0-7 Low byte of present low SSI word. Bit 0 is the least

significant bit of the entire present SSI word.

Produce 1 0-7 High byte of present low SSI word.

Produce 2 0-7 Low byte of present high SSI word.

Produce 3 0-7 High byte of present high SSI word. Bit 7 is the most

significant bit of the entire present SSI word.

Produce 4 0-7 Low byte of stored low SSI word. Bit 0 is the least

significant bit of the entire stored SSI word.

Produce 5 0-7 High byte of stored low SSI word.

Produce 6 0-7 Low byte of stored high SSI word.

Produce 7 0-7 High byte of stored high SSI word. Bit 7 is the most

significant bit of the entire stored SSI word.

Byte Bit Description

Produce 8 7 6 5 4 3 2 1 0 Status Byte 0

C2ST C1ST C2R C1R INC DEC RUN I1

Produce 9 7 6 5 4 3 2 1 0 Status Byte 1

RES RES RES LHON IDF

CCE CCF SPF

1 Monitor IDF to determine the validity of the produced data. If IDF=1, the SSI data is false.

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

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Rockwell-automation 1738-SSIM23 ArmorPoint I/O SSI Absolute Encoder Mo Manual de usuario Pagina 8