Specifications

ProLinx Communication Gateways, Inc. 82
HART Master Protocol Drive Manual
August 17, 2004
ProLinx HART Connection Diagram for Multiple Single and
Loop-Powered Devices, Digital Signal Only (A, B, C, or D Types)
This type of connection is NOT recommended, but has been used to mix A, B, C, and D
types of HART devices.
Note: This type of connection may have problems associated with the lowering of AC
impedance, lower immunity to electrical noise, and lower supply voltage to A and B type
devices.
POWER CHANNEL CHANNEL CHANNEL CHANNEL
1 2 3 4
+- +-+-+-+-
24V
Power
Supply
15 devices
maximum per
channel of any A,
B
,
C or D T
yp
e
620 to 1000
Ohm, 2 Watt
Resistor