TFT32 COMMUNICATION PROTOCOL
Greyline TFS Tank Farm Supervisor software manages communications with TFT32 Transmitters
automatically
. The following Communication Protocol information is supplied for programmers who are
not using
the Greyline TFS Tank Farm Supervisor program. Programmers can create their own drivers
to address TFT32 Transmitters through other software programs on PC computers or PLC’s.
The TFT32 uses an ASCII format command/response protocol. The TFT transmits an answer only when
polled with a valid command and address. The Host computer always initiates the command/response
sequence.
Example of command/response sequence:
Command:
#%1RA
<
CR
>
Response: *
%1RA+959.3000210AA
<
CR
>
COMMAND STRUCTURE:
RESPONSE STRUCTURE:
Page 22
TFT32 Tank Farm Transmitter
Manual Series 2.4
#% 1 RA <CR>
CARRIAGE
RETURN
TANK/TFT
ADDRESS
1-9 = 1-9
A-W = 10-32
COMMAND
(MUST BE
CAPITAL
LETTERS)
COMMAND
PROMPT
FOR TFT32
*%1RA +959.3 0 0 XXX 0 AA <CR>
RESPONSE
PROMPT
TFT DATA
(SEE TEXT)
UNITS
0 = cm
MODE
0=LEVEL
RELAY
STATUS
0=OFF
1=ON
TEMP
IN °C
CHECKSUM
IN HEX
CARRIAGE
RETURN
XXX
(N/A)
