Rockwell Automation 61C544A RTD Module User Manual
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4Ć9
4.1.12
High Alarm Register (Register 28)
Register 28 defines the High alarm limit. If a channel's input value
exceeds this limit, the channel's corresponding bit in register 17 is set
to one. The value in register 28 is a 15Ćbit plus a signĆbit integer. This
value is in units of 0.1 degrees.
If register 28 does not contain an alarm value greater than the Low
alarm value, a configuration error will result. At powerĆup, the register
is set to a default value of 1000 (1000 x 0.1
o
C = 100
o
C).
4.1.13
Low Alarm Register (Register 29)
Register 29 defines the Low alarm limit. If a channel's input value is
less than this limit, the channel's corresponding bit in register 18 is
set to one. The value in register 29 is a 15Ćbit plus a signĆbit integer.
This value is in units of 0.1 degrees.
If register 29 does not contain an alarm value less than the High
alarm value, a configuration error will result. At powerĆup, the register
is set to a default value of -1000 (-1000 x 0.1
o
C = -100
o
C).
4.1.14
Low Low Alarm Register (Register 30)
Register 30 defines the Low Low alarm limit. If a channel's input value
is less than this limit, the channel's corresponding bit in register 19 is
set to one. The value in register 30 is a 15Ćbit plus a signĆbit integer.
This value is in units of 0.1 degrees.
If register 30 does not contain the lowest alarm value, a configuration
error will result. At powerĆup, the register is set to a default value of
-1500 (-1500 x 0.1
o
C = -150
o
C).