7i96E + 7i85S + AC Servo - encoder feedback

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6 years 5 months ago #168038 by Bouni
Here's the output of mesaflash:

Code:
mesaflash --device 7i96 --readhmid Configuration Name: HOSTMOT2 General configuration information: BoardName : MESA7I96 FPGA Size: 9 KGates FPGA Pins: 144 Number of IO Ports: 3 Width of one I/O port: 17 Clock Low frequency: 100.0000 MHz Clock High frequency: 200.0000 MHz IDROM Type: 3 Instance Stride 0: 4 Instance Stride 1: 64 Register Stride 0: 256 Register Stride 1: 256 Modules in configuration: Module: DPLL There are 1 of DPLL in configuration Version: 0 Registers: 7 BaseAddress: 7000 ClockFrequency: 100.000 MHz Register Stride: 256 bytes Instance Stride: 4 bytes Module: WatchDog There are 1 of WatchDog in configuration Version: 0 Registers: 3 BaseAddress: 0C00 ClockFrequency: 100.000 MHz Register Stride: 256 bytes Instance Stride: 4 bytes Module: IOPort There are 3 of IOPort in configuration Version: 0 Registers: 5 BaseAddress: 1000 ClockFrequency: 100.000 MHz Register Stride: 256 bytes Instance Stride: 4 bytes Module: StepGen There are 8 of StepGen in configuration Version: 2 Registers: 10 BaseAddress: 2000 ClockFrequency: 100.000 MHz Register Stride: 256 bytes Instance Stride: 4 bytes Module: MuxedQCount There are 6 of MuxedQCount in configuration Version: 3 Registers: 5 BaseAddress: 3600 ClockFrequency: 100.000 MHz Register Stride: 256 bytes Instance Stride: 4 bytes Module: MuxedQCountSel There are 1 of MuxedQCountSel in configuration Version: 0 Registers: 0 BaseAddress: 0000 ClockFrequency: 100.000 MHz Register Stride: 256 bytes Instance Stride: 4 bytes Module: SSerial There are 1 of SSerial in configuration Version: 0 Registers: 6 BaseAddress: 5B00 ClockFrequency: 100.000 MHz Register Stride: 256 bytes Instance Stride: 64 bytes Module: SSR There are 1 of SSR in configuration Version: 0 Registers: 2 BaseAddress: 7D00 ClockFrequency: 100.000 MHz Register Stride: 256 bytes Instance Stride: 4 bytes Module: LED There are 1 of LED in configuration Version: 0 Registers: 1 BaseAddress: 0200 ClockFrequency: 100.000 MHz Register Stride: 256 bytes Instance Stride: 4 bytes Configuration pin-out: IO Connections for TB3 Pin# I/O Pri. func Sec. func Chan Pin func Pin Dir 1 0 IOPort None 14 1 IOPort None 2 2 IOPort None 15 3 IOPort None 3 4 IOPort None 16 5 IOPort None 4 6 IOPort None 17 7 IOPort None 5 8 IOPort None 6 9 IOPort None 7 10 IOPort None 8 11 IOPort SSR 0 Out-00 (Out) 9 12 IOPort SSR 0 Out-01 (Out) 10 13 IOPort SSR 0 Out-02 (Out) 11 14 IOPort SSR 0 Out-03 (Out) 12 15 IOPort SSR 0 Out-04 (Out) 13 16 IOPort SSR 0 Out-05 (Out) IO Connections for TB1/TB2 Pin# I/O Pri. func Sec. func Chan Pin func Pin Dir 1 17 IOPort StepGen 0 Step/Table1 (Out) 14 18 IOPort StepGen 0 Dir/Table2 (Out) 2 19 IOPort StepGen 1 Step/Table1 (Out) 15 20 IOPort StepGen 1 Dir/Table2 (Out) 3 21 IOPort StepGen 2 Step/Table1 (Out) 16 22 IOPort StepGen 2 Dir/Table2 (Out) 4 23 IOPort StepGen 3 Step/Table1 (Out) 17 24 IOPort StepGen 3 Dir/Table2 (Out) 5 25 IOPort StepGen 4 Step/Table1 (Out) 6 26 IOPort StepGen 4 Dir/Table2 (Out) 7 27 IOPort MuxedQCount 0 MuxQ-IDX (In) 8 28 IOPort MuxedQCount 0 MuxQ-B (In) 9 29 IOPort MuxedQCount 0 MuxQ-A (In) 10 30 IOPort SSerial 0 RXData0 (In) 11 31 IOPort SSerial 0 TXData0 (Out) 12 32 IOPort SSerial 0 TXEn0 (Out) 13 33 IOPort SSR 0 AC Ref (Out) IO Connections for P1 Pin# I/O Pri. func Sec. func Chan Pin func Pin Dir 1 34 IOPort SSerial 0 RXData1 (In) 14 35 IOPort SSerial 0 TXData1 (Out) 2 36 IOPort None 15 37 IOPort None 3 38 IOPort StepGen 7 Step/Table1 (Out) 16 39 IOPort StepGen 7 Dir/Table2 (Out) 4 40 IOPort StepGen 6 Step/Table1 (Out) 17 41 IOPort StepGen 6 Dir/Table2 (Out) 5 42 IOPort StepGen 5 Step/Table1 (Out) 6 43 IOPort StepGen 5 Dir/Table2 (Out) 7 44 IOPort MuxedQCountSel 2 MuxSel0 (Out) 8 45 IOPort MuxedQCount 1 MuxQ-A (In) 9 46 IOPort MuxedQCount 1 MuxQ-B (In) 10 47 IOPort MuxedQCount 1 MuxQ-IDX (In) 11 48 IOPort MuxedQCount 2 MuxQ-A (In) 12 49 IOPort MuxedQCount 2 MuxQ-B (In) 13 50 IOPort MuxedQCount 2 MuxQ-IDX (In)

Unfortunately I flashed the bitfile several months ago and do not have the bit file around anymore.
I guess there is no way of getting a checksum of the loaded bitfile?

The next thing that's very strange is that I've ordered a 7i85S at EUSurplus an they confirmed that type on the order confirmation, but on my card the silkscreen says just 7I85. On the Mesanet store the 7i85 and 7i85S show the exactly same image.
Is there a hardware difference between these two boards and if so, how can I figure out which one I got?
Maybe the problem is the wrong board for the bitfile!?

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6 years 5 months ago - 6 years 5 months ago #168066 by PCW
The 7I85 and 7I85S have the same PCB but have different assembly options

The back of the card will have a lot label that has the actual part #
You can also tell from the components, on a 7I85, there will be a
120 Ohm 1206 resistor by the 7I85S Stepgen output locations. these will be
empty on a 7I85S. You are running 7I85S firmware and the encoder order is
as expected (you will need to enable 6 encoders in your hal file to make the last
7I85S encoder available)
Last edit: 6 years 5 months ago by PCW.

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6 years 5 months ago #168145 by Bouni
I just checked and the resistors are empty and the label on the back side says its a 7i85S.

I have currently 5 encoders configured. Can you tell me why I need to configure 6?
There is one on the 7i96 and 4 on the 7i85S !?

What would be the correct number for this setup, 4 Stepgens, 2 SmartSerial and 6 encoders?

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6 years 5 months ago - 6 years 5 months ago #168149 by PCW
The 7I85/7I85S uses multiplexed encoders, The LinuxCNC driver can support multiplexed
encoders or non-multiplexed encoders but not both at the same time. This means that the
7I96 non-multiplexed encoder connection must use multiplexed hardware. What this means
practically is that the 7I96 will have an aliased encoder:

7I96 ENC HAL ENC 0
7I96 ENC HAL ENC1 (alias of ENC 0)
7I85S ENC 0 HAL ENC 2
7I85S ENC 1 HAL ENC 3
7I85S ENC 2 HAL ENC 4
7I85S ENC 3 HAL ENC 5

The correct setup number would be to enable as many modules as you need, the maximum numbers
of modules enabled would be 8 stepgens, 6 encoders, 2 sserials
Last edit: 6 years 5 months ago by PCW.

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6 years 5 months ago #168157 by Bouni
Thank you so much for answering my questions!
Everything starts to make sense now :-)

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6 years 5 months ago #168268 by Bouni
One thing ist still not clear to me, you said

The correct setup number would be to enable as many modules as you need, the maximum numbers
of modules enabled would be 8 stepgens, 6 encoders, 2 sserials


There are 5 Stepgens on the 7i96 and 4 Diff Out aka Stepgens on the 7i85S, so that should mean there are 9 possible Stepgens, right?

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