Danfoss VLT Series Design Manual page 127

®
VLT HVAC Drive Design Guide 7. RS-485 Installation and Set-up
2. Address format 1-126:
Bit 7 = 1 (address format 1-126 active)
Bit 0-6 = Frequency converter address 1-126
Bit 0-6 = 0 Broadcast
The slave returns the address byte unchanged to the master in the response telegram.
7.4.5. Data Control Byte (BCC)
The checksum is calculated as an XOR-function. Before the first byte in the telegram is received,
the Calculated Checksum is 0.
7
127
®
MG.11.B2.02 - VLT is a registered Danfoss trademark