Frequently Asked Questions

Digital Communications
Question: What are the default communication settings for Keller transmitters?
Answer: By default Keller transmitters are set to 8 data bits, 1 start bit & 1 stop bit with no parity. The baud rate is 9600 by default (it can be changed to 115,200 baud). The default MODBUS address is 250.

Question: Why is MODBUS address 250 used by default on Keller transmitters?
Answer: Device address 250 is a transparent address, a sort of 'catch-all'. If only one transmitter is connected to the bus, this address can be used to communicate with the device without knowing the device’s actual address. If more transmitters are to be used on a bus you should change the address of each using READ30/CCS30, or specify this when you place your order.

Question: I am using a 3rd party RS485 converter, how can I get it to work with READ30?
Answer: Try disabling 'echo' in READ30. You can do this on the communications panel that first opens when you launch READ30. This will solve most communication problems with 3rd party interface converters. However, you should contact the manufacturer of the interface converter if you have further issues configuring the device to communicate with our transmitters. Alternatively you can use one of our own interface converters for guaranteed functionality with other Keller devices.

Data Loggers (Hardware & Software)
Question: How do I clear the memory on my data logging device?
Answer: There is no way to manually clear or erase the memory of a Keller data-logger, nor is it necessary to do so. By default our data loggers will use all available memory until full capacity is reached, then once the data is extracted using the Logger DCX software the device will overwrite this old data as necessary. However, if the option 'Endless (circular memory)' is used in the Logger DCX software then the device will keep writing new data, while overwritting the oldest data, until logging is stopped.

More Q&A to come very soon! In the meantime please do not hesitate to contact us if you need further assistance!