12
The Pfeiffer Vacuum parameter set
6.3 Cross-linking via the connection RS485
Establish the connections according to the specification of the interface RS485.
Connect all units with D+ and D- to the bus.
• The group address of the electronic drive unit is 962.
• All units connected to the bus must have differing RS485 device addresses
[P:797].
7 The Pfeiffer Vacuum parameter set
7.1 General
All function-relevant variables of a turbopump are anchored in the corresponding
electronic drive unit in the form of parameters. Each parameter has a three-digit
number and a designation. Parameters can be used via Pfeiffer Vacuum display
and control panels or via RS485 with the Pfeiffer Vacuum protocol.
USB/RS485-converterTC 400
TC 600 / 750
M12
RJ45
TC TC
D+
D-
USB/RS485-converter
RS 485
USB
PC
CAUTION
Danger of electric shock
The insulation measures of the bus system are designed only for use with safety extra-
low voltage.
Connect only suitable devices to the bus system.
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