Rockwell-automation 1769-HSC Compact High Speed Counter Module Manual de usuario descargar pdf (Pagina 44)

44 Rockwell Automation Publication 1769-UM006E-EN-P - July 2013

Chapter 2 Module Operation

Table 11 illustrates the step-by-step logical operations that are performed to

determine the final output state. For example, Range 1 values do not affect the

output because Range 1 is disabled, and the Output Off Mask causes some of the

outputs to change to zero because it takes priority over the range masks.

The output parameters shown have been discussed in the previous sections.

Readback/Loopback

The Readback/Loopback function is the feedback of the module’s outputs via its

input array. This 16-bit image includes both real (4) and virtual (12) outputs.

If the module’s output is OFF due to overcurrent, both the Overcurrent status

flag and the Readback bit will indicate the condition being 1 and 0, respectively.

Conversely, should the output be ON due to any module control, such as UDSS,

this will be indicated by Readback.

Table 11 - Output Control Example

Output Parameter Mask Information Logical Operation Result

(1)

Range 0 0 001011011010001OR 0001011011010001

Range 1 0 010111111110010OR 0001011011010001

Range 2 0 100000000001100OR 0001011011010001

Output On Mask 0 100101010101000OR 01 011 110111 1 1 001

Output Overcurrent - -----------1000AND 0101111011110 001

Output Off Mask 1 111000011111100AND 0101000011110000

Program State

Values

------------11 1 1 Override 0 101000011110000

Fault State Values - -----------11 1 1 Override 0 101000011110000

Final Output State 0 101000011110000

(1) Bolded text indicates that these values have changed.

1 2 ... 39 40 41 42 43 44 45 46 47 48 49 ... 169 170

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Rockwell-automation 1769-HSC Compact High Speed Counter Module Manual de usuario Pagina 44