Rockwell Automation 1770-HT8 SMART TRANSMITTER - Manual (Page 32)

Installing the Smart Transmitter Interface
Products
Chapter 2
2-7
Star/Linear Connection
Example 3 shows a setup where a combination of star and linear
connections are used. In this example, two HT8’s are joined in a linear
connection by cable a (a1 and a2) and the other two HT8’s are joined to the
HT1 in a star connection by cables b and c.
Figure 2.5
Example 3: Star/linear Connection
90064
1770ĆHT8
1770 Ć HT1
+ -
1770ĆHT8
1770ĆHT8
b
c
a1
+ -
+ -
+ -
+ -
1770ĆHT8
a2
Cable Size Cable a1 Cable a2 Cable b Cable c
Belden #85168 250 ft 200 ft 200 ft 100 ft