Horner APG RCS SmartStix User Manual
Page 57
CH.6
15 MAR 2003
PAGE 57
MAN0305-04
ADVANCED SMARTSTIX PROGRAMMING
6.6
SmartStix I/O Module Device Classes
There are currently five SmartStix I/O Module device classes (0, 1, 2, 3 and 7) that control and monitor
Digital I/O points and exchange Directed and Global Data words with a Control Station via the CsCAN
Network.
Table 6. 3 shows the five device classes along with the number of Digital I/O points they contain and the
number of Directed and Global Data words they exchange.
Example: Determining the class of a SmartStix module:
1. Select the number of digital output points and the number of digital input points using Table 6.3.
2. Upon doing so, the device class is located in the same row as the digital outputs and inputs; the
words consumed and produced are also shown for that device class.
Table 6.3 – SmartStix I/O Module Device Classes
Device
Class
Digital
Output Points
Digital
Input Points
Directed Data
Words Consumed
Global Data
Words Produced
0
16
0
8
4
1
0
16
8
4
2
16
16
8
4
3
0
32
8
4
7
32
0
8
4
All other device classes are reserved for future products.
Note that although all of the above device classes can consume eight Directed Data Words and can
produce four Global Data words, each device class uses a specific subset of this data.
The following terms are defined:
Consumed Data:
Directed Data received by a SmartStix I/O Module from a Control Station
Produced Data:
Global Data transmitted by a SmartStix I/O Module to a Control Station
Table 6.4
summarizes SmartStix I/O module consumed and produced data words. For advanced users,
the following sections describe the consumed and produced words in detail.