Rockwell Automation 61C544A RTD Module - Manual (Page 21)

4Ć5
4.1.3 High Alarm Status Register (Register 17)
Register 17 indicates the current status of each configured channel's
High alarm. See figure 4.3. A bit is set in this register whenever a
channel's input value exceeds the configured High alarm limit. The
bit is reset when the input value returns to a level below the
configured limit.
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
Register 17
Bits 0Ć15
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 4.3 Ć High Alarm Status Register
4.1.4 Low Alarm Status Register (Register 18)
Register 18 indicates the current status of each configured channel's
Low alarm. See figure 4.4. A bit is set in this register whenever a
channel's input value is less than the configured Low alarm limit. The
bit is reset when the input value returns to a level above the
configured limit.
Register 18
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 4.4 Ć Low Alarm Status Register