Echelon LonPoint Module - Manual (Page 38)

4-2 Installation and Wiring of Base Plates
LonPoint Type 1 Base Plate Installation
Figure 4.1 presents a detailed view of the front side of the base plate. The circuit
board inside the Type 1 Base Plate includes a large number “1A” in the lower right
corner, as viewed from the front of the base plate, designating it as a Type 1 Base
Plate with a Revision A circuit board. The “1A” designation indicates compatibility
with LonPoint modules such as the DIO-10, that make use of screw terminal 14.
Screw terminal 14 is NOT connected on older base plates marked “1”.
Test points are provided on the circuit board for measuring all of the wiring
connections. Symbols are silk-screened on the PCB to identify the functions of the
test points.