Wiring
Wiring the Optional ISIO Boards
FOUNDATION™
Fieldbus
Communications
With FOUNDATION™ Fieldbus, the DensityPRO gauge provides users with access to
the control or program parameters via a host system. The Fieldbus connector,
accessible from the faceplate of the gauge, only requires connection to the H1 bus for
operation.
Twisted, shielded pair cable must be used, in accordance with the F
OUNDATION
Fieldbus specification
The F
OUNDATION Fieldbus option is utilized through the J12 port. The entity
parameters for port J12 are as follows:
– Vi = 24 V
– Ii = 250 mA
– Ci = Negligibly low
– Li = 10 uH
– Temperature class: T4
Figure 4-23. Optional ISIO Board J12, FOUNDATION Fieldbus
Thermo Scientific DensityPRO Installation Manual 4-15
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