Homer Hot Measurement and Tuning System - S-TEAM Lab

Once the connection has been established, the green message CONNECTION ESTABLISHED appears and you can
continue by clicking Continue button.
The Com Port Setting dialog can be invoked anytime by clicking the Commun|COM Port menu item.
A Note on USB-RS232 Adapter
Problems with communication (e.g. when transferring all samples in Rectified and Pulsed modes of sampling) or
even PC crash may be experienced with certain brands of USB-RS232 adapters (some contain a fake chip instead of
a genuine one). In case of problems, we recommend the Brainboxes US-101B adapter (supplied worldwide e.g. by
Farnell).
Case of CAN Bus
One possible problem at HomSoft start is incorrectly installed or recognized CAN Bus adapter. Then an error
message like that in Figure 12 may pop up. Sometimes simple disconnecting and reconnecting of the USB adapter
plug, then clicking Retry helps. (Clicking OK tries using a different adapter type.)
Figure 12. CAN Bus adapter error.
If this problem has been overcome and still the connection with Homer fails, a dialog window titled CAN Bus
Setting shows up (Figure 13), displaying the error message COMMUNICATION FAIL. The cause may be that Homer
is busy with lengthy measurement and responds with delay longer than the set timeout (repeated clicking the
Connect button may help), or there is CAN baudrate discrepancy. The window enables to either set CAN baudrate
on the PC side manually or detect it automatically. Be sure the CAN cable is properly connected and terminated by a
120-ohm resistor at both end devices (see Electrical Installation – CAN Bus).
To establish communication manually:
From Hardware drop-down list, select the CAN Bus interface your PC is equipped with (preferably Sontheim
CAN USB Light Dongle).
Set Baudrate and, if your patience has limits, possibly decrease Timeout to, say, 2 seconds.
Click Connect and wait for message.
If the message is CONNECTION ESTABLISHED, reset Timeout to the original value and click Continue
button. If the message is COMMUNICATION FAIL, repeat clicking Connect several times, then try another
baudrate.
To establish communication automatically:
From Hardware drop-down list, select the CAN Bus interface your PC is equipped with (preferably Sontheim
CAN USB Light Dongle).
If your patience has limits, decrease Timeout to, say, 2 seconds.
Click AutoFind and wait (abort by Stop).
Read the message. If the message is CONNECTION ESTABLISHED, reset Timeout to the original value and
click Continue button. If the COMMUNICATION FAIL message persists, verify the interconnecting cable
integrity or proceed as described in “Problem is at Homer end” above and retry.
User's Handbook Homer Hot Measurement and Tuning System Homer Start 27