Rockwell-automation 1734-SSI POINT I/O Synchronous Serial Interface Ab Manual de usuario descargar pdf (Pagina 27)

Publication 1734-UM007D-EN-P - December 2005

Communicate with Your Module 3-5

The following table shows the Instance Services provided by the

Parameter Object (Attribute = 1).

Operating Modes

The operating modes of the 1734-SSI module are essentially the

parameters you set through the RSNetWorx EDS file. This table lists

parameters you set.

Parameter Services Field Bytes

1 Get Present SSI Word 4

2 Latched SSI Word 4

3 SSI Status Word 2

4 Get/Set Run 1

5 Gray/Binary 1

6 SSI Word Length 1

7 Data Rate 1

8 Gray to Binary Conversion 1

9 SSI Word Delay Time 2

10 Standardization 1

11 Trailing Bits 1

12 Latch Input Control 1

13 Sensor Resolution 2

14 Sensor Cycles 2

15 Comp 1 Control 1

16 Comparator 1 Value 4

17 Comp 2 Control 1

18 Comparator 2 Value 4

SSI Word Filter Control

(1)

This parameter is present in firmware version 4.001 and later.

Parameter

Value

(1)

Notes

Run Enable/Disable Turns SSI data clock on or

off

Data Type Binary or Gray SSI sensor’s data type

Data Word Length 2…31 (13) Length of the received serial

data word can be any size

between 2 and 31 data bits.

Bit 32 is used for Latch Input

detection.

Data Rate 125/250/500K baud,

1/2M baud

Speed of SSI data clock

1 2 ... 22 23 24 25 26 27 28 29 30 31 32 ... 52 53

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Rockwell-automation 1734-SSI POINT I/O Synchronous Serial Interface Ab Manual de usuario Pagina 27

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