
INSTALLATION
3
15
SMARTMAC 400
www.krohne.com
07/2022 - 4008875401 - MA SMARTMAC_400 R01 en
3.3 Point-to-Point connection - analogue / digital mode
With the SMARTMAC 400, you have direct access to all sensor functions. In case a sensor
connection via PC or HART field communicator is nevertheless desired, please note the correct
master settings.
If using more than one HART
®
master please be aware of the correct configuration because only
one Primary master and one Secondary master are allowed. Two Primary masters or two
Secondary masters will cause communication errors.
Default master modes are
•
SMARTMAC 400: Secondary
•
HART
®
modem in PACTware: Primary
•
HART
®
Field Communicator: Secondary (can’t be changed in most devices)
Figure 3-1: Overview point-to-point connection
1
HART
®
master with e.g. PACTware
TM
FDT/DTM
2
HART
®
modem
3
HART
®
signal
4
SMARTMAC 400
5
HART
®
master with HART
®
DD (for example field communicator)
6
SMARTPAT sensor
7
Power supply for devices (slaves) with passive current output
8
Load
250
(Ohm) (only required if not used in SMARTMAC 400)