7i96 - P1 CONNECTOR - 15 mA for sink - it is not good
20 Sep 2022 17:49 #252419
by zz912
7i96 - P1 CONNECTOR - 15 mA for sink - it is not good was created by zz912
Hello,
I have problem. I made breaking for P1 EXPANSION CONNECTOR. I need only inputs.
This is schema:
This dont working. First problem was rezistor R2. I clamped it. But after that it still didn't work well. So I increased the current for the diode on the optocoupler. After that it started working properly.
When I showed off these modifications on the CZ discussion forum, I was warned that something was wrong when I needed such a large current in the optocoupler.
forum.strojirenstvi.cz/viewtopic.php?t=42356
So I disconnected the optocoupler and tried connecting pin P1 to ground via an ammeter. There should be a 4k7 Pull up resistor, so I should measure about 1 milliamp. However, I measured 15 milliamps!!!
I tried this with LinuxCNC turned off and on, to rule out that the pin is configured as OUTPUT.
[/code]
Can't think of what could be wrong?
I have problem. I made breaking for P1 EXPANSION CONNECTOR. I need only inputs.
This is schema:
This dont working. First problem was rezistor R2. I clamped it. But after that it still didn't work well. So I increased the current for the diode on the optocoupler. After that it started working properly.
When I showed off these modifications on the CZ discussion forum, I was warned that something was wrong when I needed such a large current in the optocoupler.
forum.strojirenstvi.cz/viewtopic.php?t=42356
So I disconnected the optocoupler and tried connecting pin P1 to ground via an ammeter. There should be a 4k7 Pull up resistor, so I should measure about 1 milliamp. However, I measured 15 milliamps!!!
I tried this with LinuxCNC turned off and on, to rule out that the pin is configured as OUTPUT.
[code]zdenek@CNC:~$ mesaflash --device 7i96 --addr 10.10.10.10 --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: PWM
There are 1 of PWM in configuration
Version: 0
Registers: 5
BaseAddress: 4100
ClockFrequency: 200.000 MHz
Register Stride: 256 bytes
Instance Stride: 4 bytes
Module: StepGen
There are 4 of StepGen in configuration
Version: 2
Registers: 10
BaseAddress: 2000
ClockFrequency: 100.000 MHz
Register Stride: 256 bytes
Instance Stride: 4 bytes
Module: QCount
There are 1 of QCount in configuration
Version: 2
Registers: 5
BaseAddress: 3000
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 -> 7I96_0
Pin# I/O Pri. func Sec. func Chan Sec. Pin func Sec. Pin Dir
TB3-1 0 IOPort None
TB3-2 1 IOPort None
TB3-3 2 IOPort None
TB3-4 3 IOPort None
TB3-5 4 IOPort None
TB3-6 5 IOPort None
TB3-7 6 IOPort None
TB3-8 7 IOPort None
TB3-9 8 IOPort None
TB3-10 9 IOPort None
TB3-11 10 IOPort None
TB3-13,14 11 IOPort SSR 0 Out-00 (Out)
TB3-15,16 12 IOPort SSR 0 Out-01 (Out)
TB3-17,18 13 IOPort SSR 0 Out-02 (Out)
TB3-19,20 14 IOPort SSR 0 Out-03 (Out)
TB3-21,22 15 IOPort SSR 0 Out-04 (Out)
TB3-23,24 16 IOPort SSR 0 Out-05 (Out)
IO Connections for TB1/TB2 -> 7I96_1
Pin# I/O Pri. func Sec. func Chan Sec. Pin func Sec. Pin Dir
TB1-2,3 17 IOPort StepGen 0 Step/Table1 (Out)
TB1-4,5 18 IOPort StepGen 0 Dir/Table2 (Out)
TB1-8,9 19 IOPort StepGen 1 Step/Table1 (Out)
TB1-10,11 20 IOPort StepGen 1 Dir/Table2 (Out)
TB1-14,15 21 IOPort StepGen 2 Step/Table1 (Out)
TB1-16,17 22 IOPort StepGen 2 Dir/Table2 (Out)
TB1-20,21 23 IOPort StepGen 3 Step/Table1 (Out)
TB1-22,23 24 IOPort StepGen 3 Dir/Table2 (Out)
TB2-2,3 25 IOPort PWM 0 PWM (Out)
TB2-4,5 26 IOPort PWM 0 Dir (Out)
TB2-7,8 27 IOPort QCount 0 Quad-A (In)
TB2-10,11 28 IOPort QCount 0 Quad-B (In)
TB2-13,14 29 IOPort QCount 0 Quad-IDX (In)
TB2-16,17 30 IOPort SSerial 0 RXData0 (In)
TB2-18,19 31 IOPort SSerial 0 TXData0 (Out)
Internal-TXEn 32 IOPort SSerial 0 TXEn0 (Out)
Internal 33 IOPort SSR 0 AC Ref (Out)
IO Connections for P1 -> 7I96_2
Pin# I/O Pri. func Sec. func Chan Sec. Pin func Sec. Pin Dir
P1-01/DB25-01 34 IOPort None
P1-02/DB25-14 35 IOPort None
P1-03/DB25-02 36 IOPort None
P1-04/DB25-15 37 IOPort None
P1-05/DB25-03 38 IOPort None
P1-06/DB25-16 39 IOPort None
P1-07/DB25-04 40 IOPort None
P1-08/DB25-17 41 IOPort None
P1-09/DB25-05 42 IOPort None
P1-11/DB25-06 43 IOPort None
P1-13/DB25-07 44 IOPort None
P1-15/DB25-08 45 IOPort None
P1-17/DB25-09 46 IOPort None
P1-19/DB25-10 47 IOPort None
P1-21/DB25-11 48 IOPort None
P1-23/DB25-12 49 IOPort None
P1-25/DB25-13 50 IOPort NoneAttachments:
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20 Sep 2022 18:32 #252424
by zz912
Replied by zz912 on topic 7i96 - P1 CONNECTOR - 15 mA for sink - it is not good
Sinking old 7i96 is needed 15mA.Sinking new 7i96S is needed 1mA.I measured with only connected power.
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20 Sep 2022 18:57 #252430
by zz912
Replied by zz912 on topic 7i96 - P1 CONNECTOR - 15 mA for sink - it is not good
I found another old 7i96 and it need 16mA for sinking IO50.
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