Problem with HAL with 2 OUT pins

This is from forum.linuxcnc.org/38-general-linuxcnc-q...etup?start=30#185996


net apos-cmd joint.2.motor-pos-cmd => stepgen.2.position-cmd
net apos-cmd toolchanger.position-cmd => stepgen.2.position-cmd

The error is signal apos-cmd cannot add OUT pin "toolchanger.position-cmd" it already has OUT pin "stepgen.2.position-cmd "

So how do I solve this

Usually a mux component that selects which output signal should drive the input
is used. Note that switching modes may be fairly complex to avoid motion discontinuities

loadrt mux2
addf mux2.0 servo-thread

net apos-cmd-motion <= joint.2.motor-pos-cmd => mux2.0.in0
net apos-cmd-toolchanger <= toolchanger.position-cmd => mux2.0.in1
net apos-cmd <= mux2.0.out => stepgen.2.position-cmd
net apos-mode <= toolchanger-active mux2.0.sel

Thanks Peter
I get an error toolchanger-active does not exist. I don't see any pins by that name
With this;-
loadrt toolchanger
addf toolchanger servo-thread

loadrt mux2
addf mux2.0 servo-thread

net apos-cmd-motion <= joint.2.motor-pos-cmd => mux2.0.in0
net apos-cmd-toolchanger <= toolchanger.position-cmd => mux2.0.in1
net apos-cmd <= mux2.0.out => stepgen.2.position-cmd
net apos-mode <= toolchanger-active mux2.0.sel


net tool-change iocontrol.0.tool-change => toolchanger.toolchange
net tool-changed iocontrol.0.tool-changed <= toolchanger.toolchanged
net tool-number iocontrol.0.tool-prep-number => toolchanger.toolnumber
net tool-oldnumber iocontrol.0.tool-number => toolchanger.currenttoolnumber

##net apos-cmd toolchanger.position-cmd => stepgen.2.position-cmd
net ahomed joint.2.homed => toolchanger.ishomed
net tool-prepare-loopback iocontrol.0.tool-prepare => iocontrol.0.tool-prepared

net estop-out <= iocontrol.0.user-enable-out
net estop-ext => iocontrol.0.emc-enable-in

loadusr -W hal_manualtoolchange
net tool-change iocontrol.0.tool-change => hal_manualtoolchange.change
#net tool-changed iocontrol.0.tool-changed <= hal_manualtoolchange.changed

net tool-number iocontrol.0.tool-prep-number => hal_manualtoolchange.number
net tool-prepare-loopback iocontrol.0.tool-prepare => iocontrol.0.tool-prepared

I just made up that name.

You would need a signal that indicates the the toolchanger is active and
expects to control joint2

Note that I am not suggesting this as a solution to anything but the issue
of driving a hal input (the stepgen position in this case) from two different
sources (the toolchanger position in one case and the joint 2 position in the other)

Expect wild motions and following errors even after you determine what should select
the stepgen source