Honeywell Farenhyt IFP-2000 Manual page 103

151430-L8
Figure 7-1 and Figure 7-2 show how wire length is determined for out-and-back tap and T-tap style wiring.
IDP device max loop resistance = 40 ohms
SD device max loop resistance = 50 ohms
Figure 7-1 Calculating wire run length for a simple out and back tap
When using T-taps, the total length of all taps and the main bus must not exceed 40,000 feet. This requirement
must be met in addition to the maximum distance requirements for the various wire gauges.
IDP device max loop resistance = 40 ohms
SD device max loop resistance = 50 ohms
Figure 7-2 Calculating Wire Run Length for a T-tap
IDP and SD SLC Device Installation
7-4