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RE 30523-B/09.13 | Installation and operation Hydraulics | Bosch Rexroth AG 17/48
Installing the VSPD 2
2.6 Installation Local Bus
The local bus is used to connect the individual amplifier cards of the HACD family.
Up to 32 cards can be connected. Each amplifier must be assigned a clear bus ad-
dress.
The connection is established using a CAN protocol with a baud rate of 250kbit. The
maximum length of the most distant amplifier cards must not exceed 280m. Moreover,
the maximum length of the branch lines of 1 m must be observed.
Fig. 3 Schematic structure of “Local Bus“
Data is to be transmitted via a shielded twisted-pair cable.
Two bus terminating resistors of 120 Ohm are required.
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