Multidrop mode (‘three-wire’), 2 ids and revision numbers, 3 multidrop mode (‘three-wire’) – KROHNE M8E Converter HART 0101 User Manual
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1.3 Multidrop Mode (‘three-wire’)
In case devices with current output shall work continuously active a 'third wire' is needed to properly connect it
together with two-wire loop powered devices in the same network.
2 IDs and Revision numbers
The HART Device Descriptions described in this document have the following IDs and revision numbers:
Manufacturer ID:
69 (0x45)
Device Type:
230 (0xE6)
HART module :
Device Revision:
1
DD Revision:
1
HART Universal Revision: 5
HC 275 OS Revision:
≥
4.9
FC 375 System SW Rev.:
≥
1.8
AMS Version:
≥
6.0
PDM Version:
≥
5.2+SP1
Multidrop Mode (‘three-wire’)
(Connecting two-wire and four-wire devices in the same network)
≥ 250
Ohm
HART
two-wire
loop powered
devices
4 mA
4 mA
. . .
Addr . > 0
Addr. > 0
4 mA
. . .
four-wire
active
source
devices
4 mA
HART
Secondary Master
Primary Master
Power
Supply
HART
Modem
IFC 300
Addr. > 0
IFC 300
Addr. > 0
Terminal A (C)
Terminal A- (C-)