Sinumerik controlpanel with Linux CNC

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03 Mar 2021 20:19 #200936 by andypugh

Charlieplexing sounds interesting - but it has the limitation for one led at a time.


Typically you cycle between them very rapidly (and over-drive them) and use persistence of vision to make it look like they are all lit.

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08 Mar 2021 18:31 #201459 by JimPanski
Yes of course. Like on the 7 seg. LED displays..

Do you may have ideas how its possible to use this mpi bus type of panel?

BR
Conny

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08 Mar 2021 19:03 #201467 by andypugh
Google tells me that MPI is RS485. So some sort of protocol analyser (wireshark?) might help figure it out.

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09 Mar 2021 07:13 #201520 by Mike_Eitel
Mpi has quite some common part with old profibus. Can't remember witch one is a subset of the other. Mpi is newer, think it has more possibilities.

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09 Mar 2021 17:47 #201572 by JimPanski
As far a I could read MPI and PB profocols are mostly the same and only few bits should different. On the MPI HW side there is mostly no galvanic isolation as found in PB.

After lot of googling I think this is way over my head. As the programmer of pyprofibus stated this MPI connection will surely not work with his software. Wireshark will also not work. If my understanding is correct a RS485 sniffer tool is needed. Problem is also that I dont know how this would be used :/
So I am afraid I have to go the Mesa way...

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09 Mar 2021 19:38 #201590 by Mike_Eitel
Don't know how it is today, but in the old (Siemens) days these protokoll have been kept for few eyes only behind locked doors. I remember they are subset of the secret s5 programming interface.

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09 Mar 2021 22:17 #201607 by Mud
Beckhoff manage both profibus and profinet.

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11 Mar 2021 07:23 #201778 by JimPanski
Thats right, but those communication terminals are hard to get working with lcec first of all. Then on this particular machine I am using Mesa Hardware, so it´s also not the straight forward soution. Maybe in this case better to use sserial HW (maybe Mesa or even arduino/stm stuff with a matrix type panel).
Nevertheless it would be very interesting to get those types of panels working with lcnc.

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08 Dec 2022 19:23 - 08 Dec 2022 21:04 #258911 by beakersBestFriend
Hi Onkelmat,
I picked the Sinumerik panel because I like the touch and feel and the bunch of user knobs avail.
And it is quite affordable (at least here in Europe).
Profibus needs a hard realtime capable master and protocol is patented by Siemens. So i picked the passive one, without any electronics. It is simple as it can be. It is not multiplexed. Every key has its own signal, the LEDs also. The multi position knobs for feed and spindle speed are binary coded.
Only the stop keys are kind of special. They have a pullup and a resistor to allow fail state detection with a window discriminator curcuit. 
So you only need 80 digital TTL level inputs, three window discriminator curcuit and 48 outputs and you are ready to go.
I decided to make a PCB to interface the Machine Control Panel from its two 64pin ribbon cables with all the key, knob and LED signals to
  • Modbus RTU over isolated RS485 and isolated USB
  • Modbus over Ethernet (that is isolated by definition)
  • CAN/CANOpen over isolated CAN.
(of course only one Interface is needed simultaneously )
 

It is powered by a 24V supply or by a floppy power connector.
Because there was some space left on the PCB I added 4 isolated 12-24V 300mA outputs for a stacked signal light and a TTL  quadraturencoder input with index for a jog wheel.

The software side looks like this:
MB2Hal uses a RS485 (USB Dongle) to communicate with the board. I grouped the keys and LEDs into three modus groups each OpMode, Axis and User.
The Signals from MB2Hal are connected to halui.
The quadratur signal is not supported yet.

The Sinumerik keys match the LinuxCNC functions quite good, only the teach in key has no equivalent. (But of course can dedicate it to an other signal.) 
In addition to the feed stop Sinumerik has a spindle start/stop that stops the feedrate followed by the spindel.
(at least our old Sinumerik 810 does it this way)
I think that can be emulated by a small sequencer.
What I do miss is the Sinumerik style single stepping, that LinuxCNC handles completly different.
On the other side LinuxCNC can override jog feedrate, what the Sinumerik panel does not support with a knob.
I think about using keys so set jog feedrate 10, 20, 50 , 80 and 100%
I used the component toggle2nist (which actually has a bug) to convert e.g. the coolant on and off switch to a toggle switch.But this is a matter of taste. 
For the stacked light i wrote a simple component that combines  halui.mode.is-auto, halui.program.is-running and  halui.machine.is-on to some (blinking) light states.

I love the result. Build it in a Brother TC211 retrofit. Others will come.
Feels much better to control the machine using dedicated keys and indicators.
( The picture shows two boards mounted on two different MCPs. Some communication interfaces are not mounted. Due to the chip shortage I only populated them when needed.)
attached the modbus.hal and modbus.ini 

cheers 
Rainer

modbus.hal
# http://linuxcnc.org/docs/html/man/man1/halui.1.html
loadusr -W mb2hal config=./hallib/modbus.ini
loadrt  toggle2nist names=BlockToggle,CoolantToggle,MistToggle,OptionalStopToggle

addf BlockToggle           base-thread
addf CoolantToggle         base-thread
addf MistToggle            base-thread
addf OptionalStopToggle base-thread

loadrt  jogbykeys count=1
addf jogbykeys.0   servo-thread

loadrt  nothomedwarning names=nothomedwarn
addf    nothomedwarn        base-thread

net MaschinenstatusRot          stackedsignal.0.red      => mb2hal.StackedLight.00
net MaschinenstatusGelb         stackedsignal.0.yellow   => mb2hal.StackedLight.01
net MaschinenstatusGruen        stackedsignal.0.green    => mb2hal.StackedLight.02

net Abort          halui.abort                            mb2hal.OpmodeKey.00
net AutoModeReq    halui.mode.auto                        mb2hal.OpmodeKey.04 
net JogModeReq     halui.mode.joint                       mb2hal.OpmodeKey.01 
net MDIModeReq     halui.mode.mdi                         mb2hal.OpmodeKey.03 

net PRGStopReq     halui.program.stop                     mb2hal.OpmodeKey.06 
net programIsIdle  halui.program.is-idle                    mb2hal.OpmodeLed.06

net PRGStartReq    halui.program.run            =>        mb2hal.OpmodeKey.07 
net programIsRunning                                      mb2hal.OpmodeLed.07


net FEEDPauseReq   halui.program.pause                    mb2hal.AxisKey.17
net FEEDPauseAct   halui.program.is-paused                  mb2hal.AxisLed.17

net FEEDResumeReq  halui.program.resume                   mb2hal.AxisKey.18

net HomeAllRequest mb2hal.OpmodeKey.09                      halui.home-all
setp nothomedwarn.chanelcount   3
net join0homed   halui.joint.0.is-homed   nothomedwarn.is-homed0  
net join1homed   halui.joint.1.is-homed   nothomedwarn.is-homed1  
net join2homed   halui.joint.2.is-homed   nothomedwarn.is-homed2  
net jointshomed  nothomedwarn.all-homed   mb2hal.OpmodeLed.09


net JogINCVAR      mb2hal.OpmodeKey.10                      jogbykeys.0.req-jog-var
net JogINC1        mb2hal.OpmodeKey.11                      jogbykeys.0.req-jog-inc-1
net JogINC10       mb2hal.OpmodeKey.12                    jogbykeys.0.req-jog-inc-10
net JogINC100      mb2hal.OpmodeKey.13                    jogbykeys.0.req-jog-inc-100
net JogINC1000     mb2hal.OpmodeKey.14                    jogbykeys.0.req-jog-inc-1000
net JogINC10000    mb2hal.OpmodeKey.15                    jogbykeys.0.req-jog-inc-10000

net IsJogINCVAR    jogbykeys.0.is-jog-var                mb2hal.OpmodeLed.10                      
net IsJogINC1      jogbykeys.0.is-jog-inc-1                mb2hal.OpmodeLed.11                    
net IsJogINC10     jogbykeys.0.is-jog-inc-10             mb2hal.OpmodeLed.12                    
net IsJogINC100    jogbykeys.0.is-jog-inc-100            mb2hal.OpmodeLed.13                    
net IsJogINC1000   jogbykeys.0.is-jog-inc-1000            mb2hal.OpmodeLed.14                    
net IsJogINC10000  jogbykeys.0.is-jog-inc-10000            mb2hal.OpmodeLed.15                    


setp jogbykeys.0.jog-set-low-speed 100 
setp jogbykeys.0.jog-set-hi-speed  600

net JogVarSpeedValue  halui.joint.jog-speed             jogbykeys.0.jog-set-var-speed
net JogVarIncValue    halui.joint.selected.increment    jogbykeys.0.jog-set-inc


net JogKeyInMinus  jogbykeys.0.jog-minus                mb2hal.AxisKey.12                 mb2hal.AxisLed.12
net JogKeyInSPUP   jogbykeys.0.jog-speedup              mb2hal.AxisKey.13
net JogKeyInPlus   jogbykeys.0.jog-plus                 mb2hal.AxisKey.14                 mb2hal.AxisLed.14

net JogMinusInc  halui.joint.selected.increment-minus   jogbykeys.0.jog-inc-minus 
net JogPlusInc   halui.joint.selected.increment-plus    jogbykeys.0.jog-inc-plus
net JogMinus     halui.joint.selected.minus               jogbykeys.0.jog-var-minus
net JogPlus      halui.joint.selected.plus                jogbykeys.0.jog-var-plus     


net JointSelXreq  halui.joint.0.select                    mb2hal.AxisKey.00
net JointSelYreq  halui.joint.1.select                    mb2hal.AxisKey.01
net JointSelZreq  halui.joint.2.select                    mb2hal.AxisKey.02
#net JointSelAreq  halui.joint.3.select                   mb2hal.AxisKey.03


net JointSelXAct     halui.joint.0.is-selected            mb2hal.AxisLed.00
net JointSelYAct     halui.joint.1.is-selected            mb2hal.AxisLed.01
net JointSelZAct     halui.joint.2.is-selected            mb2hal.AxisLed.02
#net JointSelAAct    halui.joint.3.is-selected            mb2hal.AxisLed.03


net modeIsAuto                                              mb2hal.OpmodeLed.04
net JointModeAct    halui.mode.is-joint                   or2_manual_joint_mode.in0                 
net ManModeAct        halui.mode.is-manual                  or2_manual_joint_mode.in1
net ManOrJogModeAct or2_manual_joint_mode.out             mb2hal.OpmodeLed.01
net MDIModeAct    halui.mode.is-mdi                       mb2hal.OpmodeLed.03

# BlockToggle,CoolantToggle
net FloodTogIn       mb2hal.UserKey.00                       CoolantToggle.in  
net FloodOnReq    CoolantToggle.on                        halui.flood.on             
net FloodOffReq   CoolantToggle.off                       halui.flood.off             
net FloodIsOn       halui.flood.is-on                       CoolantToggle.is-on  mb2hal.UserLed.00

net MistTogIn       mb2hal.UserKey.01                      MistToggle.in  
net MistOnReq     MistToggle.on                          halui.mist.on             
net MistOffReq    MistToggle.off                         halui.mist.off             
net MistIsOn       halui.mist.is-on                       MistToggle.is-on     mb2hal.UserLed.01

net OptStopTogIn  mb2hal.UserKey.03                      OptionalStopToggle.in  
net OptStopOnReq  OptionalStopToggle.on                  halui.program.optional-stop.on             
net OptStopOffReq OptionalStopToggle.off                 halui.program.optional-stop.off             
net OptStopIsOn   halui.program.optional-stop.is-on      OptionalStopToggle.is-on     mb2hal.UserLed.03

net BLOCKMODETogIn       mb2hal.UserKey.04                   BlockToggle.in  
net BLOCKMODEOnReq    BlockToggle.on                      halui.program.block-delete.on            
net BLOCKMODEOffReq   BlockToggle.off                     halui.program.block-delete.off            
net BLOCKMODEIsOn       halui.program.block-delete.is-on => BlockToggle.is-on               => mb2hal.UserLed.04


net SpindleStop  halui.spindle.0.stop                   mb2hal.AxisKey.15
net SpindleStart halui.spindle.0.start                  mb2hal.AxisKey.16

setp             halui.spindle.0.override.direct-value  1
setp             halui.spindle.0.override.count-enable  1
setp             halui.spindle.0.override.scale         0.01

setp             halui.feed-override.direct-value        1
setp             halui.feed-override.count-enable        1
setp             halui.feed-override.scale              0.01

setp             halui.rapid-override.direct-value        1
setp             halui.rapid-override.count-enable        1
setp             halui.rapid-override.scale             0.01

net SpindleSet   mb2hal.Knob.00.int  => halui.spindle.0.override.counts        
net FeedSet      mb2hal.Knob.01.int  => halui.feed-override.counts       => halui.rapid-override.counts     

modbus.ini
[MB2HAL_INIT]

INIT_DEBUG=3
HAL_MODULE_NAME=mb2hal
SLOWDOWN=0.0
TOTAL_TRANSACTIONS=8

[TRANSACTION_00]
LINK_TYPE=serial
SERIAL_PORT=/dev/ttyUSB0
SERIAL_BAUD=115200
SERIAL_BITS=8
SERIAL_PARITY=even
SERIAL_STOP=1
SERIAL_DELAY_MS=1
MB_SLAVE_ID=10
MB_TX_CODE=fnct_02_read_discrete_inputs
FIRST_ELEMENT=0
NELEMENTS=16
HAL_TX_NAME=OpmodeKey
MAX_UPDATE_RATE=8.0
MB_RESPONSE_TIMEOUT_MS=50
MB_BYTE_TIMEOUT_MS=50
DEBUG=0

[TRANSACTION_01]
MB_TX_CODE=fnct_02_read_discrete_inputs
FIRST_ELEMENT=16
NELEMENTS=19
HAL_TX_NAME=AxisKey
DEBUG=0

[TRANSACTION_02]
MB_TX_CODE=fnct_02_read_discrete_inputs
FIRST_ELEMENT=40
NELEMENTS=15
HAL_TX_NAME=UserKey
DEBUG=0

[TRANSACTION_03]
MB_TX_CODE=fnct_15_write_multiple_coils
FIRST_ELEMENT=0
NELEMENTS=16
HAL_TX_NAME=OpmodeLed
DEBUG=0

[TRANSACTION_04]
MB_TX_CODE=fnct_15_write_multiple_coils
FIRST_ELEMENT=16
NELEMENTS=19
HAL_TX_NAME=AxisLed
DEBUG=0

[TRANSACTION_05]
MB_TX_CODE=fnct_15_write_multiple_coils
FIRST_ELEMENT=40
NELEMENTS=15
HAL_TX_NAME=UserLed
DEBUG=0

[TRANSACTION_06]
MB_TX_CODE=fnct_03_read_holding_registers
FIRST_ELEMENT=0
NELEMENTS=2
HAL_TX_NAME=Knob
DEBUG=0

[TRANSACTION_07]
MB_TX_CODE=fnct_15_write_multiple_coils
FIRST_ELEMENT=56
NELEMENTS=4
HAL_TX_NAME=StackedLight
DEBUG=0
Attachments:
Last edit: 08 Dec 2022 21:04 by beakersBestFriend.

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