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Operating modes, Operating modes -5 – Rockwell Automation 1734-SSI POINT I/O Synchronous Serial Interface Absolute Encoder Module User Manual User Manual

Page 27

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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

19

SSI Word Filter Control

(1)

(1)

This parameter is present in firmware version 4.001 and later.

1

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