Rockwell Automation 1761-HHP-B30 MicroLogix 1000 with Hand-Held Programmer (HHP) - Manual (Page 332)

After You’ve Entered Your Program
Chapter 18
18–11
Selecting the Watchdog Scan
This byte value contains the number of 10 ms ticks allowed during a program
cycle. The default value is 10 (100 ms), but you can increase this to 255
(2.55 seconds) or decrease it to 1, as your application requires.
Important: If the watchdog value equals the current scan time value, a
watchdog major error will be declared (code 0022).
To change the setting:
1. Access the program configuration menu.
2. Arrow up to the option WATCHDOG SCAN and select it.
4 times
ENT
W A T C H D O G S C A N
( x 1 0 m s ) 1 0
3. Type in a new scan time.
4. Enter the setpoint and return to the home screen.
ENT ESC ESC