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Rockwell Automation Current Input Module User Manual

Page 22

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4Ć4

4.1.1

A/D Data Registers (Registers 0 to 15)

Registers 0 to 15 hold the latest numeric data from configured analog

current input channels 0 to 15. This data has been filtered (50 or

60 Hz filters) and, if the cycle averaging option has been enabled,

averaged together. See figure 4.1. The data is in 15Ćbit signed integer

format. The data is displayed in engineering units specified by the

Maximum Scaling Value (register 24) and Minimum Scaling Value

(register 25). Unscaled values will range from 0 to 4095. If a channel

is not configured, its data is held at zero.

Register 0 = A/D Data from Channel 0

Register 1 = A/D Data from Channel 1

Register 2 = A/D Data from Channel 2

.

.

.

Register 14 = A/D Data from Channel 14

Register 15 = A/D Data from Channel 15

Figure 4.1 Ć A/D Data Register Assignments

4.1.2

High High Alarm Status Register (Register 16)

Register 16 indicates the current status of each configured channel's

High High alarm. See figure 4.2. A bit is set in this register whenever

a channel's input value exceeds the configured High High alarm limit.

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

to the configured limit.

Register 16

Bits 0Ć15

14 13 12 11 10 9

8

7

6

5

4

3

2 1

0

R

R

R R R R

R

R

R R

R

R R

R R R

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

15

Figure 4.2 Ć High High Alarm Status Register