Dave,
It appears to me that you are assigning an attribute to position A that does not exist. A to D are track segment connection points and provide a handy means of identifying the routes through a cross-over or slip, such as A <--> B.
JMRI knows that the point ends for a left hand cross-over are at B and D. And are at A and C for a right hand cross-over.
On the tool bar, the "Additional Name" field is only active for slips. They require two turnouts. I don¡¯t know the reasoning behind the design. One thought is that requiring explicit actions in the Edit screen to select the additional turnout eliminates accidental turnout pairs.
Dave Sand
toggle quoted message
Show quoted text
On Nov 27, 2018, at 2:23 PM, Dave Roberts <dccdaveroberts@...> wrote:
Dave,
Thank you for the explanation. I understand the convention being used to identify the attached Blocks and see the underlying logic.
What I am also seeing in the actual icons used for both RH and LH Crossovers in the Tool Bar of the Layout Editor is a breakdown in the logic. With the RH Crossover icon position A is identified as the Top LH corner and this is correctly shown as being on the Throat of the Turnout. As you say, going clockwise, A & B are on one route and C & D are on a separate route.
It is not possible to repeat this for the LH Crossover - using the Throat of the turnout as A - without placing A at the Top RH Corner and reversing the direction. Given that this may prove to be problematic to implement and the fact that the Blue is only to identify the 'Start Position A' in the sequence then it should not matter which connection is made first so long as the pairings are maintained.
With regard to the Turnout Name and Associated Turnout Name fields. In the Tool Bar of the Layout Editor when I select a Crossover I am allowed to enter a Name in the Turnout Name field but I cannot select the Associated Turnout field and enter data here. This is in line with the Notes that say there is usually only one turnout in the Turnout Table since both turnouts are operated as one, at the same time. However, this is a connection that JMRI need to be aware of. This is dealt with using the Turnout Editor where this Associated Turnout can be edited in. I was just asking that the Field in the Tool Bar of Layout Editor be changed so that the Alternative Turnout's Name can be added here too.
A final thank you for the Mac keystroke info. I'll try this when I get to the next Crossover/Slip/Double Crossover.
Dave
