I can't help with original question but have a similar issue. I have an older pair of duplex 211's where the hall button wires run to one master car and the signal then runs through it to the second "slave" car. Slave car does not "see" the hall wires directly.
Hall calls work on the "master car" just fine. If we shut off the mainline on the "master car" the "slave car" will answer hall calls.
Problem is that when both of them are on normal operation the slave car never gets to respond to hall calls. Send "master car" away and press hall call, with "slave" at the same landing, it never gets dispatched.
Already confirmed that they are set for DUPLEX operation in their parameters. Have the service tool, just haven't been to the job for some time. Wanted to check if there was something else between the parameters to check before we start replacing boards.
