I/O Expansion Module Overview
18
HMC3000 Series I/O Module Guide
18
Fixed Pulse Mode
The output signal is generated on Channel 1. The frequency ramps up from the minimum frequency to the
maximum frequency in the interval specified by acceleration time. The output signal is generated until the
specified number of pulses has been sent. As the number of pulses approaches the specified count, the
frequency ramps down from the maximum frequency to the minimum frequency in the interval specified by the
deceleration time. When the specified number of pulses is reached, the output signal stops but remains
enabled. The Duty Cycle is fixed at 50%.
Function
Register
Description
Output, PWM Pulse
Y0 (Channel 1)
Y1 (Channel 2)
Physical Output
Configuration Register
MWnn24
MWnn30
Value = 9 for this mode
Minimum Frequency Register
MWnn25
MWnn31
Range = 1 to 100000
Maximum Frequency Register
MWnn27
MWnn33
Range = 1 to 100000
Acceleration Time Register
MWnn37
MWnn38
Range: 0 to 65535
Deceleration Time Register
MWnn39
MWnn40
Range: 0 to 35536
Total Pulses Register
MWnn41
MWnn43
0 to 4294967295
Elapsed Pulses Register
MWnn45
MWnn47
0 to 4294967295
Pulse Enable Flag
Mnn576
Mnn577
Output enabled when ON
Frequency Setting Error Flag
Mnn467
Mnn472
ON = error (resets automatically)
Acceleration Time Error Flag
Mnn468
Mnn473
ON = error
Deceleration Time Error Flag
Mnn469
Mnn474
ON = error
Total Pulses Setting Error Flag
Mnn470
Mnn475
ON = error
Total Pulses Reached
Mnn784
Mnn785
ON when Total Pulses have been sent
To Implement PWM Operation:
1.
Configure the PWM output using the configuration register for that channel and mode.
2.
Set the parameter values for the selected mode. Monitor the error flags for the parameters.
3.
Enable the output by setting the Enable Output bit for that channel.
Summary of Contents for HMC3-M0808P0401T
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