53
Serial Interface
Error Processing
In order to ensure correct data exchange between the VM-83 and the computer,
the rules described above must be observed. If an error occurs, the following
steps should be taken.
- The computer has sent RMT1**<CR><LF> but the REMOTE indicator
on the VM-83 does not light.
Send RMT1**<CR><LF> again after about 4 seconds. Repeat this 2
to 3 times. If the REMOTE indicator still does not light, one of the
following conditions may exist:
- Transfer parameters do not match. (Check settings made with menu
screens.)
- Interface cable is defective or not properly connected.
- VM-83 is not powered.
- ID number setting does not match.
When the computer has sent a wrong command or the parameter is out of range,
the VM-83 disregards that command. If the VM-83 is in receiving mode but
there is no command from the computer for 4 seconds or more, the receive
mode times out.
Control Operation in Remote Mode
While the VM-83 is in remote mode, only the LIGHT key and MENU key are
active. The LIGHT key allows turning the display backlight on and off, and the
MENU key in remote mode serves for switching back to local mode. This al-
lows manual override of remote mode at any time.