Cooper Instruments & Systems DFI INFINITY Digital Force Indicator/Controller - Manual (Page 69)

11.20 Output Offset
This item is 3 bytes (6 characters). It uses the prefixes G, P, R and W with the suffix 27.
Bits 0 through 19 assign the value.
Bits 20 through 22 assign the decimal number according to Table 11.19.
Table 11.19. Output Offset Bits 22, 21, and 20
BIT NUMBER
22 21 20 DECIMAL NO. (POWER
OF 10 MULTIPLIER)
0 0 0 Not used
0 0 1 1
0 1 0 -0
0 1 1 -1
1 0 0 -2
1 0 1 -3
1 1 0 -4
1 1 1 -5
Bit 23 is the sign bit where 0 corresponds to a plus sign and 1 corresponds to a minus sign.
The maximum/minimum value is ±999999.
EXAMPLE: You want to read the output offset value from RAM of meter 15. Send the command *15G27.
The meter responds with
Since the meter is in ECHO mode, G27 is the echoing response, and the value to be interpreted is D17618.
D is the decimal value and sign. This is 1101 binary, therefore the sign is negative and the power is 10
-3 .
17618 HEX = 95768 decimal, therefore the output offset is –95.678.
Important Note: The true value for the output offset is stored in EEPROM. When the meter is operating, it
combines this value with the calibration scale and offset of the Isolated Analog Output Board and stores the
“modified output offset value” in RAM. Therefore, a P27 command that writes to RAM should not be used at all,
or should be used very carefully. With G27 the value of the modified output offset can be read.
11.21 Raw Measurement Values; Batch Count (“BATCH”), Batch Number (“BAT NO”), Total
And Time
You can read and change values in internal registers depending upon the mode. In Batch Mode, you can read
and change the values of the BATCH count, BAT NO, TOTAL, and TIME. In Rate and Sq Rt Modes, you can
read and change values of TOTAL and TIME. Values can be in either RAM or EEPROM. Any time the meter is
put through a hard reset, it loads raw values from EEPROM registers into the corresponding registers in RAM.
(A raw value is a value that has had no scale or offset factors applied.)
All raw measurement values use prefixes G, P, R, and W. Suffixes are as follows:
BATCH count = 2A
BAT NO =
2B
TOTAL = 29
TIME = 28
Since no scale factors or offsets are applied to BAT NO and TIME, raw values are the same as final values.
1. TIME. TIME is 3 bytes where
CF 125 INFINITY SC GUIDE
65 M1519/N/0605