Function Blocks 
RAMP Function Block 
Revision 11    HC900 Hybrid Control Designer Function Block Reference Guide  313 
2/07     
Table 91  RAMP general tab parameters 
 
Properties Group  Parameter  Index #  Parameter Description  Value or Selection 
General 
Tag Name 
N/A  16-character tag name 
 
 
Descriptor 
N/A Block description 
16 character maximum 
Display 
IN Decimal 
Places 
N/A 
Parameter Decimal Places 
shown on the operator Interface 
for the Input and Input Limit. 
Range 0 to 5 
Enter selection in field 
 
OUT Decimal 
Places 
N/A 
Parameter Decimal Places 
shown on the operator Interface 
for the Output and Output Scale 
Limit. 
Range 0 to 5 
Enter selection in field 
 
IN Engr. 
Units 
N/A 
PV Engineering Units for 
Operator Interface. Also applies 
to Input Limit parameters. 
Four characters maximum 
Enter characters in field 
 
OUT Engr. 
Units 
N/A 
Output Engineering Units for 
Operator Interface. Also applies 
to Output Scale Limit 
parameters. 
Four characters maximum 
Enter characters in field 
Settings Off Value 
16 
Value written to OUT when the 
scale is disabled. If no scales 
are selected, then the default 
Input value [DFLT] is the output. 
Within the Output Limits 
 
Lag Time 
(Sec) 
19 
Lag Time Constant 
Range: 0.0 to 120.0 
seconds. 0=no lag 
 
Transfer 
Rate Up 
(EU sec) 
17 
Transfer Rate in Engineering 
Units/second when switching to 
a 
higher value (bumpless 
analog transfer). 
Range: 0-99999 EU/sec 
 
Transfer 
Rate Down 
(EU sec) 
18 
Transfer Rate in Engineering 
Units/second when switching to 
a 
lower value (bumpless analog 
transfer). 
Range: 0-99999 EU/sec