Mesa 7i98 Anything I / O Ethernet setup a BTS7960 and Encoder

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4 years 10 months ago #230211 by BigDo
Mesa 7i98 Anything I / O Ethernet setup a BTS7960 and Encoder was created by BigDo
 I waited a long time for my Mesa 7i98 Anything I / O Ethernet controller card (not available from welectron for 4 months) then I ordered it from esurplus and 4 days later I received the card. This is my first Mesa card, and I have a few questions about it.
1. How do I setup and wire this encoder(BRIH-40D1605A1000)correctly?
brown + Vs
green    ChA
red       ChA
yellow  ChB
blue     ChB
pink     ChN
gray     ChN
white    0v
yell/gr  screen
do I need 2 pins for each channel(A. B. N)?

 

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2. How do I setup and wire an IBT-2 (BTS7960) with the Mesa card?
Do I need 2 PWM pins (RPWM, LPWM) and 2 enable pins (R_EN, L_EN) per motor?

 

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4 years 10 months ago #230308 by PCW
Replied by PCW on topic Mesa 7i98 Anything I / O Ethernet setup a BTS7960 and Encoder
That is a differential encoder, normally you would use a differential
input daughtercard for interfacing with this type of encoder but if you
connect it directly to a 7I98, you would only use one of each pair, that is,
only connect to:

CHA
CHB
CHN
+5V
GND

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4 years 10 months ago #230328 by BigDo
Replied by BigDo on topic Mesa 7i98 Anything I / O Ethernet setup a BTS7960 and Encoder
Thank you PCW.

the BTS7960 has R-PWM, L-PWM and 2 Enable pins,
is it the right way if I connect the 2 PWM pins together and switch the R-EN and L-EN with DIR signals?

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4 years 10 months ago #230344 by PCW
Replied by PCW on topic Mesa 7i98 Anything I / O Ethernet setup a BTS7960 and Encoder
I would expect to drive the R-PWM and L-PWM pins with PWM outputs
with the PWM output type set to 2=up/down mode. The enables are
probably tied together and connected to a GPIO bit

NOTE: Directly connecting the FPGA outputs to a non-isolated driver chip
(with a common ground with the motor power supply) is quite likely
to damage the FPGA card unless you are very careful about EMI and ground
bumping. This also applies to the encoder connections. If you wish to do this,
at least add a 220 Ohm or so series resistor to each FPGA I/O pin to prevent
damage from negative voltage spikes

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4 years 10 months ago #230348 by BigDo
Replied by BigDo on topic Mesa 7i98 Anything I / O Ethernet setup a BTS7960 and Encoder
i have i China-BOB with Oprocoupler installed for testing.

where do i set the PWM output type up, in linuxcnc or in the bitfile?

 

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4 years 10 months ago #230388 by BigDo
Replied by BigDo on topic Mesa 7i98 Anything I / O Ethernet setup a BTS7960 and Encoder
PCW can you please take a look at my bitfile to see if I did everything right?
 

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I have configured 4 PWM and 4 Encoder.I got some warnings during compilation, are they important?

 

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4 years 10 months ago #230395 by D.L.
Replied by D.L. on topic Mesa 7i98 Anything I / O Ethernet setup a BTS7960 and Encoder
Duplicate index input for counter 2, no index input for counter 3.

IOPortTag & x"00" & NullTag & NullPin, -- I/O 17 PIN 1 just GPIO
IOPortTag & x"02" & QCountTag & QCountIdxPin, -- I/O 18 PIN 14 (Quad2 IDX)
IOPortTag & x"00" & NullTag & x"00", -- I/O 19 PIN 2
IOPortTag & x"03" & QCountTag & QCountQBPin, -- I/O 20 PIN 15 (Quad2 A)
IOPortTag & x"00" & NullTag & x"00", -- I/O 21 PIN 3
IOPortTag & x"03" & QCountTag & QCountQAPin, -- I/O 22 PIN 16 (Quad2 B )
IOPortTag & x"00" & NullTag & x"00", -- I/O 23 PIN 4
IOPortTag & x"02" & QCountTag & QCountIdxPin, -- I/O 24 PIN 17 (Quad2 IDX)
IOPortTag & x"00" & NullTag & x"00", -- I/O 25 PIN 5
IOPortTag & x"00" & NullTag & x"00", -- I/O 26 PIN 6
IOPortTag & x"00" & NullTag & x"00", -- I/O 27 PIN 7
IOPortTag & x"00" & NullTag & x"00", -- I/O 28 PIN 8
IOPortTag & x"00" & NullTag & x"00", -- I/O 29 PIN 9
IOPortTag & x"00" & NullTag & x"00", -- I/O 30 PIN 10
IOPortTag & x"00" & NullTag & x"00", -- I/O 31 PIN 11
IOPortTag & x"02" & QCountTag & QCountQAPin, -- I/O 32 PIN 12 (Quad2 A)
IOPortTag & x"02" & QCountTag & QCountQBPin, -- I/O 33 PIN 13 (Quad2 B )

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4 years 9 months ago #230578 by BigDo
Replied by BigDo on topic Mesa 7i98 Anything I / O Ethernet setup a BTS7960 and Encoder
finally i managed to flash my Mesa card, but the card does not appear in pncconf. How can I add the 7i98.

 

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Code:
niko@dcs:~$ mesaflash --device 7i98 --readhmid Configuration Name: HOSTMOT2 General configuration information:   BoardName : MESA7I98   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: QCount   There are 4 of QCount in configuration   Version: 2   Registers: 5   BaseAddress: 3000   ClockFrequency: 100.000 MHz   Register Stride: 256 bytes   Instance Stride: 4 bytes   Module: PWM   There are 8 of PWM in configuration   Version: 0   Registers: 5   BaseAddress: 4100   ClockFrequency: 200.000 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 P1 Pin#                  I/O   Pri. func    Sec. func       Chan      Pin func        Pin Dir  1                      0   IOPort       None            14                      1   IOPort       QCount           0        Quad-IDX        (In)  2                      2   IOPort       PWM              0        PWM             (Out) 15                      3   IOPort       QCount           1        Quad-A          (In)  3                      4   IOPort       PWM              1        PWM             (Out) 16                      5   IOPort       QCount           1        Quad-B          (In)  4                      6   IOPort       PWM              2        PWM             (Out) 17                      7   IOPort       QCount           1        Quad-IDX        (In)  5                      8   IOPort       PWM              3        PWM             (Out)  6                      9   IOPort       None             7                     10   IOPort       None             8                     11   IOPort       None             9                     12   IOPort       None            10                     13   IOPort       None            11                     14   IOPort       None            12                     15   IOPort       QCount           0        Quad-A          (In) 13                     16   IOPort       QCount           0        Quad-B          (In) IO Connections for P2 Pin#                  I/O   Pri. func    Sec. func       Chan      Pin func        Pin Dir  1                     17   IOPort       None            14                     18   IOPort       QCount           2        Quad-IDX        (In)  2                     19   IOPort       PWM              4        PWM             (Out) 15                     20   IOPort       QCount           3        Quad-B          (In)  3                     21   IOPort       PWM              5        PWM             (Out) 16                     22   IOPort       QCount           3        Quad-A          (In)  4                     23   IOPort       PWM              6        PWM             (Out) 17                     24   IOPort       QCount           3        Quad-IDX        (In)  5                     25   IOPort       PWM              7        PWM             (Out)  6                     26   IOPort       None             7                     27   IOPort       None             8                     28   IOPort       None             9                     29   IOPort       None            10                     30   IOPort       None            11                     31   IOPort       None            12                     32   IOPort       QCount           2        Quad-A          (In) 13                     33   IOPort       QCount           2        Quad-B          (In) IO Connections for P3 Pin#                  I/O   Pri. func    Sec. func       Chan      Pin func        Pin Dir  1                     34   IOPort       None            14                     35   IOPort       None             2                     36   IOPort       None            15                     37   IOPort       None             3                     38   IOPort       None            16                     39   IOPort       None             4                     40   IOPort       None            17                     41   IOPort       None             5                     42   IOPort       None             6                     43   IOPort       None             7                     44   IOPort       None             8                     45   IOPort       None             9                     46   IOPort       None            10                     47   IOPort       None            11                     48   IOPort       None            12                     49   IOPort       None            13                     50   IOPort       None  

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