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Generic CAN Parameter Out Max Value?

Barnhart Crane 4 years ago in IQANdesign • updated 4 years ago • 3

I need to send a PDO1 off SDO to a Variable frequency drive. When I enter the necessary data portion of the frame, IQAN Design (5.04.8.5179) gives me an error saying I'm out of the maximum range. I'm confused by this. Currently,

I won't be able to correctly send the SDO. Any thoughts?

Image 2229

Edward Polzin 4 years ago

Not sure why there is that limitation.  The number that it is limited to is 2,000,000,000, which might make sense it if was defined as a signed integer.

The workaround would be to break up into two 16-bit GFOUT channels with values of 0xC000 and 0x0181.

Thomas Moberg (System support) 4 years ago

Hello Bernard.

This is a limitation on all integers in IQAN.

If you look at page 108 in the instruction book we say this about integer.

Integer
An integer number is a 32 bit signed value in the range ±2·10^9. If an integer
value is used where a boolean value is expected, the value 0 is interpreted as
False and all other values as True.

So you will get this warning everywhere you try to enter a integer value above 2,000,000,000.

Barnhart Crane 4 years ago

Thanks Edward and Thomas. That workaround should work fine. I'll just have to get the endianness right.

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