Wiring Rules
Wiring Rules for interfaced equipment.
Applicability: CBW systems including CBW Miltron and Mentor controls, Device Master, Linear Costo Master, Miltrac and other interfaced microprocessor controls.
Also can apply to stand-alone microprocessor controls.
Problem: Microprocessor controls exhibiting any one of the following symptoms:
Controls "crashing" or resetting.
Controls with no response from keyboard entry.
Data corruption problems.
There are specific rules that MUST be followed when connecting equipment prior to startup. These rules are outlined in the MILNOR cabling diagrams.
One of the most important of these instructions refers to grounding. The equipment must be grounded in such a way that GROUND LOOPS are not created. A ground loop can be created when 2 pieces of equipment are connected with more than 1 ground wire. If 1 of the 2 ground wires follow a slightly different path there is a possibility that a voltage difference can be generated that will affect the relationship between ground and the +5VDC driving the processor. This may cause the processor to "crash".
(This was submitted by Ed Hoffman on 12/22/97)
