Johnson Controls IOM3711 Installation Manual page 10

Table 4: Communications bus and supply power terminal blocks, functions, ratings, requirements, and cables
Terminal block/Port Terminal
label labels
HOT
24~
COM
Note:
• The SA Bus and FC Bus wiring recommendations
in this table are for MS/TP bus communications
at 38,400 baud. For more information, refer to
the MS/TP Communications Bus Technical Bulletin
(LIT-12011034).
• See Table 3 to determine wire size and cable
lengths for cables.
10 IOM3711 Input/Output Module Installation Guide
Function, electrical ratings/Requirements
24 VAC Power Supply - Hot
Supplies 20–30 VAC (Nominal 24 VAC)
24 VAC Power Supply - Common
(Isolated from all other Common terminals on expansion
module.)
Recommended cable type
0.8 mm to 1.0 mm
(18 AWG) 2-wire