Rockwell Automation 1747-DSN DISTRIBUTED I/O SCANNER - Manual (Page 20)

Chapter 3
Configuration and Programming
3–2
The scanner can be configured to communicate with a maximum of 7 or 30
I/O blocks. The 7 or 30 I/O block configuration is determined by the ID code
that is entered when programming the SLC processor. SLC 5/01 processors
can only use the 7 I/O block configuration. SLC 5/02 processors can use
either the 7 or 30 I/O block configuration.
Programming
Your SLC processor can be programmed with an HHT (Hand Held Terminal)
or APS (Advanced Programming Software). Although the configuration
steps are similar, they are not identical. Therefore, the following basic steps
are provided. For specific instructions, refer to the user’s manual included
with your programming device.
1. Locate an open slot in your rack.
2. Assign the scanner to the slot by selecting OTHER from the I/O
Configuration Screen.
3. Enter the ID Code number:
•
03507 for 7 I/O block Configuration
•
13607 for 30 I/O block Configuration
4. When using the 30 I/O block configuration, you can enter the number of
Scanned Input and Output Words using the Specialty I/O and Advanced
Setup menus. You can specify less than the default and reduce the
processor scan time by transferring only the part of the input and output
image that your application requires.
Important: Do not set either of these values to 0. The scanner will not
work correctly.
The default Maximum [number of] Input and Output Words is 8 when
using ID number 03507 and 32 when using ID number 13607. You do
not have to change these values.
After selecting the maximum number of I/O blocks by entering the proper ID
code, the specific number of I/O blocks on the DIO Link is programmed
using bits 0–4 of the scanner output image Control Word. Further
information regarding the Control Word is found in the sections entitled 7
I/O block Configuration Output Image and 30 I/O block Configuration
Output Image.
SLC Processor
Configuration