Cooper Instruments & Systems DFI INFINITY Digital Force Indicator/Controller - Manual (Page 20)

where nn = device address from 01 to C7 (hex) = 01 to 199 decimal.
NOTE: Response detail is given in Section 8.8 and 8.9.
8.2.2 General Command Structure
The meter can be commanded to “read”, i.e. to transmit (send) data from either the nonvolatile memory
(EEPROM) or from the volatile working memory (RAM). The meter can also be commanded to “write”, i.e. store
new values for data processing or meter control.
There are different command types associated in communicating with your meter as follows:
Type (1) Commands which return non-measurement data from the meter are “R” and “G”.
Type (2) Commands which return measurement data from the meter are “X” and “V”.
Type (3) Commands which return status character data from the meter is “U”.
Type (4) Commands send non0measurement data to the meter are “P”, “W”, and “Y” (for Process, Strain
Gauge, Temperature and Universal meters only).
Type (5) Commands for disable, enable, and reset are “D”, “E”, and “Z”.
Table 8.1 Command Prefix Letters (Command Classes)
COMMAND PREFIX
(COMMAND CLASS)
MEANING
^AE Special read, communications parameters
P (Put) Write HEX data into RAM
W (Write) Write HEX data into EEPROM
G (Get) Read HEX data from RAM
R (Read) Read HEX data from EEPROM
U Read status byte
V Read measurement data string in decimal format
X Read measurement data values in decimal format
D Disable
E Enable
Z Reset
Y (temp/process/strain
meters only)
Write characters or values to the meter
8.2.3 Command Formats
For “P” and “W” Command classes:
a) Point-to-point mode:
*ccc[hh]
b) Multipoint mode:
*nnccc[][hh]
For “G” and “R” Command classes:
a) Point-to-point mode:
*ccc[hh]
b) Multipoint mode:
*nnccc[hh]
For “X”, “V”, “U”, “D”, “E” and “Z” Command classes:
a) Point-to-point mode:
*ccc[hh]
CF 125 INFINITY SC GUIDE 16 M1519/N/0605