
Parker Hannifin S.p.A. - S.B.C. Division HPD N User’s Manual
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3.11.1.
Encoder emulation
On connector X7 there are signals of encoder emulation phase A, phase B and phase C
(reference zero). The signals are RS-422 type. For the relative programming of pulses per
revolution consult the
Basic parameters
chapter in this manual, bit b42.0, b42.1 and b42.2
(default = 1024 pulses/revolution).
3.12.
Serial line connection
The HPD drive serial line can be configured as RS-422 or RS-485 depending on the
connection. In both cases termination resistors must be used (150
Ω
). Where more than one
HPD drive is connected to the bus the final node must be terminated as shown below. The
two cases are illustrated in the following diagrams.
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