Instruction Manual

Logic Functions - Book 1
ANALOG OUTPUT MODULE BLOCK (AOM)
5-55
21
Input Range, Top (INHI) ....................................................................................................CWR
User scaled high floating point engineering units value for input normalization. The default is
100.0. The input range top must match the actual input engineering units high value. The
normalization calculation is: (RSC – INLO) / (INHI – INLO). The normalized result must
always be a value between 0 and 1.
22
Input Range, Bottom (INLO) .............................................................................................CWR
User scaled low floating point engineering units value for input normalization. The default is
0.0. The input range bottom must match the actual input engineering units low value.
23
Output Range, Top (OUTHI) .............................................................................................CWR
User scaled high floating point milliamp value for output scaling (corresponds to top of input
range. The default is 20.0. When the high is 20.0 and the low is 4.0, the output is scaled for
the normal operating range of the current output module. The scaling calculation is:
(normalized result with action * (OUTHI – OUTLO) + OUTLO). The scaled signal value is then
converted to an equivalent floating point count value. The floating point count equivalents for
signal values are:
Count Value milliamps
0.0 0.00
5000.0 4.00
25000.0 20.00
32767.0 26.21
32768.0 N/A
40535.0 N/A
60535.0 N/A
65535.0 N/A
24
Output Range, Bottom (OUTLO) ......................................................................................CWR
User scaled low floating point milliamp value for output scaling (corresponds to bottom of input
range. The default is 4.0. When the high is 20.0 and the low is 4.0, the output is scaled for
the normal operating range of the current output module.
25
Output to use on restart (RESTART) ...............................................................................CWR
If a cold or frozen start up is occurring, the result will be set depending upon the selection
made here. If this block looses communication with the select circuit, a failsafe condition
results.
PREVIOUS 0 The result existing in the data base prior to a failsafe output condition.
PRESET 1 A set value for failsafe output conditions (see preset output value).