Carlo Gavazzi UDM35/40 & USC - Manual (Page 21)

UDMsoft Programming
The software is menu driven. Just fill-in-the-blanks with your parameters. There
is little explanation required. It is actually a simple process. Any confusion and
concern that has surfaced has surrounded the issue of setup with the PC/laptop.
The following segment is meant to clarify how to establish solid communication
between UDM and PC.
Do not connect or disconnect either end of the UCABLE when the input signal is
connected to the input module. This may result in failure of the input module, the
BD35/40 display, and possibly the PC.
Follow these steps when using UDMsoft:
1. With no power connected. Plug-in the UCABLE to the INPUT module
only. You will see the connector port on the inside face of the module.
2. With the UCABLE now installed on the Input module, connect a line
cord (power source) to the power supply module (BPH or BPL) and
power up the meter. The display will illuminate.
3. Connected the DB9 end of the UCABLE to the serial port on your PC
or laptop. The display will change. It may go completely dark or it may
revert to just a single digit being illuminated. All this is normal.
4. Launch the UDMsoftware. Once launched, this software may be left
open to accommodate the programming of additional UDM meters.
If the DB9 is connected prior to power being applied to the meter, the unit will not
be recognized. Programming will be locked out. The unit will appear to be dead.
Follow the sequence above, in order to assure reliable communication between
the UDM and your PC/laptop.