PEAK® OEM 18 240 Volt SMART Equipment Controller Installation Instructions
6
Stacked FC/SA Bus Terminal Block
A dual-stacked connector serves as the FC Bus and SA Bus port on the PEAK OEM 18 controllers. The upper row
on the connector is the FC Bus Port. The lower connector row is the SA Bus port.
Figure 5: Stacked FC/SA Bus Terminal Block
The FC Bus connection is software switchable for BACnet MS/TP, Modbus slave mode, and N2 communication.
Figure 6 shows the BACnet MS/TP connection and Figure 10 shows the Modbus connection for the three
terminals. The Shield (Shd) is not required for Modbus.
The FC and Modbus controllers communicate as a slave mode, and connect to the Modbus network, which
consists of a Master Modbus device. Due to the OEM application dynamics of the PEAK controllers, the Modbus
resistor table is not based on a default application. For each new application, a new Modbus table is generated as
part of the OEM application development.
The PEAK support team identifies the configuration and application for Modbus. The controllers are programmed
based on OEM applications.
FC Bus Terminal Block
The FC Bus terminal block is a blue, removable, 4-terminal plug that fits into a board-mounted jack. Wire the
removable FC bus terminal block plugs on the controller on the top row of the stacked connector, and other field
controllers in a daisy-chain configuration using 3-wire twisted, shielded cable as shown in Figure 6. See Table 5
for
more information.
