Door Interlock System

      Typical Layout

First Image

System Logic

Action Door-1 Door-2 Door-3 Door-4 Door-5 Door-6
Door-1
Request to
Release		 Door
Released		 Access
Denied		 Locked/
but can be
Released		 Locked/
Locked/
but can be
Released		 Locked/
Locked/
but can be
Released		 Access
Denied
Door-2
Request to
Release		 Access
Denied		 Door
Released		 Access
Denied		 Locked/
Locked/
but can be
Released		 Locked/
Locked/
but can be
Released		 Access
Denied
Door-3
Request to
Release		 Locked/
Locked/
but can be
Released		 Access
Denied		 Door
Released		 Access
Denied		 Locked/
Locked/
but can be
Released		 Locked/
Locked/
but can be
Released
Door-4
Request to
Release		 Locked/
Locked/
but can be
Released		 Locked/
Locked/
but can be
Released		 Access
Denied		 Door
Released		 Locked/
Locked/
but can be
Released		 Locked/
Locked/
but can be
Released
Door-5
Request to
Release		 Locked/
Locked/
but can be
Released		 Locked/
Locked/
but can be
Released		 Locked/
Locked/
but can be
Released		 Locked/
Locked/
but can be
Released		 Door
Released		 Access
Denied
Door-6
Request to
Release		 Access
Denied		 Access
Denied		 Locked/
Locked/
but can be
Released		 Locked/
Locked/
but can be
Released		 Access
Denied		 Door
Released