Communicate real-time information, Communicate real-time information -3 – Rockwell Automation 1734-SSI POINT I/O Synchronous Serial Interface Absolute Encoder Module User Manual User Manual
Page 25
Publication 1734-UM007D-EN-P - December 2005
Communicate with Your Module 3-3
Communicate Real-time
Information
The Synchronous Serial Interface Absolute Encoder module uses data
bytes composed into assemblies to communicate real-time input and
output data over an I/O connection, as well as non-real-time module
information by using an Explicit Messaging connection.
• Assembly 101 is produced data sent by the module over an I/O
or Explicit Messaging connection.
• Assembly 102 is consumed data that is received by the module
over an I/O or Explicit Messaging connection.
• Assembly 103 is configuration data that can be read or changed
over an Explicit Messaging connection.
The following table shows the 1734-SSI module data assemblies.
Instances
Services
Field
Bytes
#101 (0x65)
Get
Present SSI Data
4
Stored SSI Data
4
Module Status
2
#102 (0x66)
Set/Get
Master Ack Byte
1
CONS1
1
Firmware
Version 3.001
Only
#103 (0x67)
Set/Get
Run
1
Gray/Binary
1
SSI Word Length
1
Data Rate
1
Gray to Binary Conversion
1
Standardization
1
SSI Word Delay Time
2
Trailing Bits
1
Latch Input Control
1
Sensor Resolution
2
Sensor Cycles
2
Alignment Byte (0x00)
2
Comparator 1 Value
4
Comparator 2 Value
4
Comp 1 Control
1
Comp 2 Control
1