Technical data

4–44 Troubleshooting
■ The state and I/O activity of the logical units, devices, and device ports in the
subsystem
Use the following steps to run VTDPY:
1. Connect a terminal to the controller. The terminal must support ANSI control
sequences.
2. Set the terminal to NOWRAP mode to prevent the top line of the display from
scrolling off of the screen.
3. Start VTDPY with the following command:
RUN VTDPY
Use the key sequences and commands liosted in Table 4–8 to control VTDPY.
Table 4–8 VTDPY Key Sequences and Commands
Command Action
Ctrl/C Enables command mode; after entering Ctrl/C, enter one of the following
commands and press Return:
CLEAR
DISPLAY CACHE
DISPLAY DEFAULT
DISPLAY DEVICE
DISPLAY HOST
DISPLAY STATUS
HELP
INTERVAL
seconds (to change update interval)
Ctrl/G Updates screen
Ctrl/O Pauses (and resumes) screen updates
Ctrl/R Refreshes current screen display
Ctrl/Y Exits VTDPY