Trane VarioTrane TR1 2800 Series, Руководство по эксплуатации

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Frequency converter address (ADR)
Two different address formats are used, with the fre-
quency converter's address range being either 1-31
or 1-126.
1. Address format 1-31
The byte for address range 1-31 has the following
profile:
Bit 7 = 0 (address format 1-31 active)
Bit 6 is not used
Bit 5 = 1: Broadcast, address bits (0-4) are not
used
Bit 5 = 0: No Broadcast
Bit 0-4 = Frequency converter address 1-31
2. Address format 1-126
The byte for address range 1 - 126 has the following
profile:
Bit 7 = 1 (address format 1-126 active)
Bit 0-6 = Frequency converter address 1-126
Bit 0-6 = 0 Broadcast
The slave sends the address byte back unchanged in
the response telegram to the master.
Example:
writing to frequency converter address 22 (16H) with
address format 1-31:
Data control byte (BCC)
The data control byte is explained in this example:
Before the first byte in the telegram is received, the
Calculated CheckSum (BCS) is 0.
When the first byte (02H) has been received:
BCS = BCC EXOR “first byte”
(EXOR = exclusive-or)
Each subsequent byte gates with BCS EXOR and pro-
duces a new BCC, e.g.:
BCS = 0 0 0 0 0 0 1 0 (02H)
EXOR
2nd byte = 1 1 0 1 0 1 1 0 (D6H)
BCC = 1 1 0 1 0 1 0 0 (D4H)
56 TR1 2800 Series VFD
Programming