Allen-Bradley 1747-SN User Manual page 37

8. Set the M0-M1 and G file sizes.
Using the Specialty I/O Configuration menu, set the M1 and M0 file sizes to 32 words (48 words if
using complementary I/O). (32 words is the minimum required for operation.) If you do not set the
M1 and M0 file sizes to at least 32 words the programming device will not allow you to access the M
files in the SLC control program.
Set the G file size to 3 (5 if using complementary I/O) using the Specialty I/O Configuration menu.
Do the programming necessary to configure the M0 and M1 Block Transfer Buffers. If you are using
the block transfer (BT) function, you should set the M1 and M0 file sizes to 3,300. Ensure that you
refer to chapter 5 before completing this selection.
Write the remainder of the SLC control program that specifies how your scanner will transfer data
to/from the SLC processor and RIO devices. (Complete information about how to do ladder
programming using the APS software can be found in the APS User Manual, Publication
9399 APSUM.)
Go through the system start up procedure.
9.
9.
1. Apply power.
2. Download your program to the SLC.
3. Place the SLC in Run mode.
The scanner's FAULT LED is off and the COMM LED is green, as shown below. (This is the valid
LED pattern when in Run mode or after a Run mode to Program mode transition.) I
SCANNER
COMM FAULT
Quick Start for Experienced Users
FAULT LED is off.
COMM LED is green.
2–5
Reference
Chapter 4
(Configuration and
Programming)
Chapter 5
(Block Transfer
Ladder
Programming
Examples)
Chapter 7
(Application
Examples)
your
programming
software's user
manual
Reference
Chapter 3
(Installation and
Wiring)
Publication 1747 6.6 - July 1996