Product specifications

Diamond 36kW Manual Dynatronix, Inc.
198-1600-00 Rev F Page 115 of 146
2. The NAK indicates the location of the first problem detected. It is possible for the slave to process
part of a message properly and still return a NAK for one or more invalid data fields. For example, it
would be possible for a slave to receive a setup command and process the current setting but not
the voltage setting if the voltage setting were out of range or improperly formatted. In this case the
slave would return a NAK message indicating the first field with a problem.
3. The bad field number indicates which field was determined to be a problem. Fields are separated
by commas. Field number 1 is the header. In the message “@01.1a1#2,1,0,12345” field number 3
has a value of ‘0’
4. The slave does not sent a NAK if the command was directed to the global unit address (00).
5. The slave does not send a NAK if it is unable to decode the unit address from the message.
6. The slave does not send a NAK if the CRC is enabled and the transmitted CRC does not match the
slave calculated CRC for the message.