Cooper Instruments & Systems DFI INFINITY Digital Force Indicator/Controller - Manual (Page 64)

Table 11.12. Pulsed Setpoint Values
VALUE RESULT
0
AL TI is used for analog output ramping function
1 AL TI pertains to Setpoint 1
2 AL TI pertains to Setpoint 2
3 AL TI pertains to Setpoint 3
4 AL TI pertains to Setpoint 4
5 AL TI pertains to Setpoint 5
EXAMPLE: You want to assign Setpoint 2 to the AL TI parameter. To write this information to RAM of meter
#15, send the command *15P2002. The meter will respond with 15P20.
11.11 Alarm Time (“AL TI”)
This item is 2 bytes (4 characters). It specifies the pulse duration of the single setpoint set to pulsed (see 11.6
and 11.10). It uses command prefixes G, P, R, and W with the suffix 17. Values can range from 01 to 9999
where 01 corresponds to 0.01 s and 9999 corresponds to 99.99 s.
EXAMPLE: Setpoint 2 has been set to pulsed (“CNFG 3”) and assigned to the AL TI parameter (Pulsed
Setpoint). You want the Setpoint 2 pulse duration to be 34.12s. To write this information to RAM of meter #15,
send the command *15P170D54. The meter will respond with 15P17.
11.12 Input Scale And Offset (“IN.SC.OF”)
Input Scale and Input Offset are 3 bytes (6 characters) each. Both use command prefixes G, P, R, and W.
Input Scale uses the suffix 23. Input Offset uses the suffix 24.
Three bytes equals 24 bits. Bits 0 through 22 are assigned to the scale or offset value and decimal point as
follows:
Bits 0 to 19 = the HEX value of the scale or offset
Bits 20 to 22 = decimal point location according to the following table:
Table 11.13. Input Scale and Offset (“IN.SC.OF”) Bits 22, 21, and 20
BIT NUMBER
22 21 20 DECIMAL NO. (POWER OF 10 MULTIPLIER)
0 0 0 Not used
0 0 1 0
0 1 0 -1
0 1 1 -2
1 0 0 -3
1 0 1 -4
1 1 0 -5
1 1 1 -6
NOTE: Input Scale is always positive.
The input rate always considered “Positive”.
Bit 23 assigns the sign of the input or offset value. In Rate and Batch Modes, 0 corresponds to a positive value
and 1 corresponds to a negative value.
In Sq Rt Mode, Bit 23 acts as a factor of 100 for Input Scale. If the input scale value (excluding the decimal
point) extends to more than 6 digits (1000000 or larger), the value is divided by 100 and bit 23 set to 1. In
effect, the input scale value is reduced by a factor of 100 and bit 23 restores it to the original value by multiplying
by an equal factor.
CF 125 INFINITY SC GUIDE 60 M1519/N/0605