Very High Speed Counter Module - Esco Drives & Automation
Very High Speed Counter Module - Esco Drives & Automation
Very High Speed Counter Module - Esco Drives & Automation
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3-2 <strong>Very</strong> <strong>High</strong> <strong>Speed</strong> <strong>Counter</strong> <strong>Module</strong> Input and Output Data<br />
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 0<br />
Scalar<br />
8-bit value used to divide the Z input by 2 n<br />
Output Ties 0 0 0 0 0 T3 T2 T1 T0<br />
Output Ties 1 0 0 0 0 T3 T2 T1 T0<br />
Rollover Value<br />
32-bit value at which the counter is commanded to rollover<br />
Preset Value<br />
32-bit value the counter is to be set to when CP is asserted<br />
On Value 1<br />
32-bit value that sets the compare window<br />
Off Value 1<br />
32-bit value that sets the compare window<br />
On Value 2<br />
32-bit value that sets the compare window<br />
Off Value 2<br />
32-bit value that sets the compare window<br />
On Value 3<br />
32-bit value that sets the compare window<br />
Off Value 3<br />
32-bit value that sets the compare window<br />
On Value 4<br />
32-bit value that sets the compare window<br />
Off Value 4<br />
32-bit value that sets the compare window<br />
PWM Safe State Value 16-bit safe state value for the PWM signal<br />
<strong>Counter</strong> Control SS Value 0 0 0 0 0 VR CP CR<br />
Output Control SS Value DS ES OE FO DS ES OE FO<br />
Detailed Description of<br />
Data Table Information<br />
Present Channel Data (Input Word 1)<br />
This is a 32 bit unsigned long word value representing the current<br />
count of the 24 bit counter (configurations: count [0], x1 encoder [1],<br />
x2 encoder [2], PWM [3], x4 encoder [4]) or the frequency<br />
(configurations: period/rate [5], continuous/rate [6], rate measurement<br />
[7]). The range of values is 0 ≤ value ≤ 0x00FFFFFF (16,777,215).<br />
Stored/Accumulated Channel Data (Input Word 2)<br />
This is a 32 bit unsigned long word value representing the stored<br />
count of the counter at the time of some specified event. In counter<br />
configurations (configurations: count [0], x1 encoder [1], x2 encoder<br />
[2], x4 encoder [4]) without store modes selected, these words are not<br />
updated. With store modes selected, they are the stored value of the<br />
counter at the time of the specified event (ex: rising edge of Z input).<br />
In PWM [3] configuration it is the counter value at the end of the<br />
period specified by the product of the time base x gate interval. In<br />
period/rate [5] and continuous/rate [6] configurations it is the total<br />
accumulation of unscaled Z pulses (i.e. if scaling is set to 128, after<br />
128 Z pulses the accumulator will increase by 128 counts).<br />
The maximum frequency that accumulation can follow in these two<br />
modes is 200Hz x scalar value (ex: 200Hz x 128 is 25kHz). Finally, in<br />
Publication 1734-UM003A-EN-P - August 2000