Hi guys
I'm a bit confused by the description of m66 in the user's manual. I'm
trying to think that the answers should be intuitively obvious but I
can't for the life of me figure them out this morning.
Let me mix questions regarding my confusion into the relevant portion of
the current description in the user doc.
15.11 M66: Digital Input Control
To control a digital input bit, program M66 P- E- L- Q- , where the
P-word and the E-word ranges from 0 to an implementation-defined
maximum.
What is, and how can a user use "implementation-defined maximum"
Only one of the P or E words must be present. It is an error
if they are both missing.
• The P-word specifies the digital input number.
• The E-word specifies the analog input number.
• The L-word specifies the wait type:
How does the user specify a value for one of these? M66 P=1 or P1
or ....
What does the P or E value make reference to?
A parport pin, a HAL pin, a ....
In the case of the analog value, how is that formatted. Integer or
decimal or ....
The rest of the description has been snipped.
Now if I start skulking around in a running HAL I see
5 float IN 0 motion.analog-in-00
5 float IN 0 motion.analog-in-01
5 float IN 0 motion.analog-in-02
5 float IN 0 motion.analog-in-03
5 bit IN FALSE motion.digital-in-00
5 bit IN FALSE motion.digital-in-01
5 bit IN FALSE motion.digital-in-02
5 bit IN FALSE motion.digital-in-03
Based on that I'd be inclined to guess;
that we have a hard coded "implementation-defined maximum" of four.
that P could have permissible values from 0-3
that a g66 P0 might look at motion.digital-in-00
Now I'm really lost about what E1234.5678 might refer to and do.
If I can get my head round the M66 concept I'd be happy to try and edit
the relevant lyx file. I must warn that I am not comfortable with this
style of cryptic "man page" writing.
Help
Rayh
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