Hardware reference guide

I/O Modules
35013379 11/2011 461
LED Indicators and Descriptions for Discrete 12 Point Modules with Fault Indication
The following table shows the LED indicators for the discrete 12 point
140DDO88500 module with fault indication.
The following table shows the LED descriptions for discrete 12 point modules with
fault indication.
Field Wiring Terminal Strip/Module Keying Assignments
Field wiring terminal strips and module housings are slotted on the left and right
sides of the PCB card slot to accept keying pins (see I/O Module figure). The
purpose of keying is to prevent plugging the terminal strip into the wrong module,
once wiring connections have been made. Keying is implemented at the discretion
of the user.
Primary keying is provided on the right side of the module, marked A through F (top
and bottom positions are coded the same). Primary keying provides module class
coding. Primary codes have been pre-defined (see the following chart).
LEDs Color Indication when ON
Active Green Bus communication is present.
F Red An over current condition on any point has been detected.
1 ... 12 Green The indicated point or channel is turned ON.
1 ... 12 Red The indicated output point has an over current condition.
CAUTION
Safety precaution
For maximum safety and protection, Modicon recommends that module key
coding be part of the system installation procedure.
Failure to follow these instructions can result in injury or equipment damage.