I just want to say THANK YOU to Bob Bartizek for once again solving an electrical signalling issue for me.
There's a spot on the Panhandle where the Weirton Steel Yard exits onto the Westbound Mainline. This is a place where I needed an interlocking set of signals. The area is protected by an MTH signal bridge on the mainline and a Z-Stuff signal for the yard exit. The correct (desired behavior) was:
- When the switch is thrown for the mainline, the MTH signal (mainline) should show CLEAR and Yard signal STOP.
- When the switch is thrown for the yard exit, the MTH signal (mainline) should show STOP and the Yard signal CLEAR.
- When the track west of the signal is occupied, BOTH signals should show STOP.
Here some photos illustrating the correctly working solution devised by Bob.
The mainline stretches left into the distance beyond the MTH signal bridge (indicating STOP). The Weirton Steel Yard exit is to the right (with the decapod sitting on it). The DZ-1060 indicates CLEAR. Switch #36 is in the left center of the photo.
Switch #36 has been thrown for the mainline. The MTH signal is now CLEAR and the Z-Stuff signal indicates STOP.
Throwing the Switch back to the original position causes the signals to indicate properly.
The double-headed decapods have now pulled onto the mainline, occupying that block. As should occur, BOTH signals are indicating STOP.
Again my thanks to Bob!!