Serial interfaces
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IRDH575_D00089_05_M_XXEN/01.2020
Master receives no answer from five subsequent addresses, the scanning cyc-
le is started again. If the Master recognizes incorrect answers from a slave, the
fault message "Fault RS485" is issued by the Master.
Faults may be caused when:
Addresses are assigned twice
A second master exists on the BMS bus
Interference signals occur on the bus lines
A defective device is connected to the bus
Terminating resistors are not activated
7.3.2 BMS-Slave
In a BMS network for each slave an individual address between 2 and 30 has
to be selected. There may be no gaps of more than five subsequent addres-
ses, so that all slaves can be scanned by the Master. For IRDH575 a BMS
address can be selected from the address range 1…30. When assigning the
addresses, also other devices such as the EDS4… must be considered.
The correct reception of BMS data is indicated by a flashing point on the dis-
play on the right of the measuring pulse indication.
Flashing point:
BMS data re-
ceived
Fault RS485
Rs=011k
W . H
--EDS:on---auto---
******************
au t S 85
Rs=011k
W . H
--EDS:on---auto---
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