Rockwell-automation Current Input Module Manual de usuario descargar pdf (Pagina 24)

4Ć6

4.1.5 Low Low Alarm Status Register (Register 19)

Low Low alarm. See figure 4.5. A bit is set in this register whenever a

channel's input value is less than the configured Low Low alarm limit.

The bit is reset when the input value returns to a level equal to or

above the configured limit.

Bits 0Ć15

14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

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Bit 5 = Channel 5

Bit 6 = Channel 6

Bit 7 = Channel 7

Bit 8 = Channel 8

Bit 9 = Channel 9

Bit 10 = Channel 10

Bit 11 = Channel 11

Bit 12 = Channel 12

Bit 13 = Channel 13

Bit 14 = Channel 14

Bit 15 = Channel 15

Bit 0 = Channel 0

Bit 1 = Channel 1

Bit 2 = Channel 2

Bit 3 = Channel 3

Bit 4 = Channel 4

Figure 4.5 Ć Low Low Alarm Status Register

4.1.6 Out of Range Status Register (Register 20)

Out of Range alarm. See figure 4.6. A bit is set in this register

whenever a channel's A/D input value is outside of the range of

3.7 mA to 20.3 mA. The bits in this register are not latched

automatically. If you want a bit to be latched the first time a value

goes out of range, you must latch it through the application program.

If an input is identified as being out of range, the most probable

cause is that a wire between the transmitter and the module has

either not been properly connected or has been broken.