My Serial (RS-232) device isn’t responding to a command, how do I diagnose it?

Serial devices are controlled via a serial adapter with a serial cable. Supported serial adapters include Simple Blaster, Roomie Blaster, and Global Caché iTach. See the Compatibility page for further details. If you are attempting to diagnose why a device might not be responding via Serial, please follow these steps:

  1. Make sure the Serial Cable is connected properly on both ends using the proper wiring and gender. The two most common cable types for Serial devices are null modem cables and straight through cables. Make sure you have the correct cable type as the wrong cable will not work at all. For most serial adapters, there is no need to be concerned about this because the Serial Cable can be easily switched between the two types of cable purely in software using the Crossover setting in the adapter’s settings.
  2. Ensure the settings of your adapter are properly configured for the target device. This is accomplished via the adapter’s settings. While the vast majority of equipment uses the default settings, there are exceptions. The most common difference is in the baud rate. Home theater devices often use 9600 baud. Check with the manufacturer of your device for exact information. Our serial supported device list provides information for select devices.
  3. Make sure you have selected the correct device type in Roomie Remote. Some devices have multiple similar types based on the various models. Use the Test feature when adding a device to make sure you have selected the right type.
  4. Make sure you can connect via your web browser to the serial adapter using its IP address.
  5. If you have selected the most appropriate device type, your device is on the supported serial device list, and the device is still not responding, you may wish to look on our User Forums for any similar issues.