get error: snap7.snap7exceptions.Snap7Exception: b'CPU : Address out of range'

32/64 bit multi-platform Ethernet S7 PLC communication suite

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get error: snap7.snap7exceptions.Snap7Exception: b'CPU : Address out of range'

Forum: General Discussion

Creator: André

Created: 2018-03-31

Updated: 2018-04-01

André - 2018-03-31

Hi,
I'm runnnig snap7 on raspberry pi and on os x. I can read Input when using plc.read_area().
Unfortunately, I get 'snap7.snap7exceptions.Snap7Exception: b'CPU : Address out of range' when using plc.db_read() or plc.read_area() when I try to read DB's.

On PLC side:
I have created an DB (DB7) and on position DB7.2 I created a byte.

I don't know what to do. Can anyone help me?

initial position:

OSX:
snap7: stable 1.4.2 (bottled) (installed with brew)
Python 3.6.5

RaspberryPi:
snap7: python-snap7 0.9 (installed with pip)
Python 2.7.13

S71200:
TIA V12 SP1

Best,
André

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Davide Nardella - 2018-04-01

Read S71200/15000 chapter here:
http://snap7.sourceforge.net/snap7_client.html#target_compatibility

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