Rockwell Automation 61C544A RTD Module - Manual (Page 20)

4Ć4
4.1.1 A/D Data Registers (Registers 0 to 15)
Registers 0 to 15 holdthe latest numeric data from RTD analog
channels 0 to 15. This data has been filtered (50 or 60 Hz filters) and
averagedtogether. See figure 4.1. The data is in a 15Ćbit plus a
signĆbit integer format. The data is displayed in units of 0.1 degrees
(either Celsius or Fahrenheit). If a channel is not configured, its data
is heldat 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
S
S
S
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 the
configuredlimit.
Register 16
Bits 0Ć15
Bit 0ă=ăChannel 0 Bit 5ă=ăChannel 5 Bit 10ă=ăChannel 10
Bit 1ă=ăChannel 1 Bit 6ă=ăChannel 6 Bit 11ă=ăChannel 11
Bit 2ă=ăChannel 2 Bit 7ă=ăChannel 7 Bit 12ă=ăChannel 12
Bit 3ă=ăChannel 3 Bit 8ă=ăChannel 8 Bit 13ă=ăChannel 13
Bit 4ă=ăChannel 4 Bit 9ă=ăChannel 9 Bit 14ă=ăChannel 14
Bit 15ă=ăChannel 15
R R R R R R R R R R R R R R R R
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Figure 4.2 Ć High High Alarm Status Register