Adding new Units or Upgrade Chips
When you add a new unit, or upgrade chips, the Loggers default to address 0 and the non-logging modules default to address 16. In both cases you need to alter the address to match your configuration (although logger 0 is OK if you only have one Logger in your system). Use the VT Setup program to change addresses.
VT address 16 is special. The logger will only accept counts from VT addresses 0-15 (16 possible modules with 32 channels, in and out on each unit). VT address 16 is therefore not counted by the logger. A new unit is sent out with address 16 to prevent it modifying data from a VT module already in the system. However, you do need to change its address before you can use it.
When adding units, add one at a time. Use the VT Setup software to change the address to the next values (0 up) before adding another unit.
Next: Fault Finding.