'How to read Enumeration values via. pyads

I'm recently using the package pyads to connect to Beckhoff TwinCAT3. The reading and writing methods work smoothly. (BTW: TwinCAT3 works fine)

But some error occurs when I try to write a value into an enumeration in TwinCAT3.

I'm using the easiest code to test:

eCtrlMode = plc.write_by_name("GVL_Tset.stTest.eCtrlMode", 1)

eCtrlMode is the instance of an enumeration "E_CtrlMode". The enumeration "E_CtrlMode in" TwinCAT3 as following:

TYPE E_CtrlMode:
(
    Off := 0,
    Auto := 1,
    Reset := 10,
    Manual := 20
);
END_TYPE

Error returns:

TypeError: 'NoneType' object is not callable

Any help, direct or recommended reading would be appreciated :)

Solution 1:^[1]

Solution right now: An enumeration in this case is no other than a group of INT values. By using the write_by_name function, the pyads.PLCTYPE_INT property should always be added, otherwise it won't work:

eCtrlMode = plc.write_by_name("GVL_Tset.stTest.eCtrlMode", 1, pyads.PLCTYPE_INT)

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'How to read Enumeration values via. pyads

Solution 1:[1]

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Solution 1:^[1]