Register 61 general format (Write API gravity)
Host issued command:
<SOH>attr:ddd.d<EOT>
<SOH> = ASCII start of header character (01 Hex)
a = Level Plus communication address
t = tank number
rr = register number
: = ASCII colon field delimiter (3A Hex)
ddd.d = API gravity to write (where ddd.d is a variable length field with 1 to 3
characters to the left of the decimal point and 1 character to the right
of the decimal point)
<EOT> = ASCII end of transmission character (04 Hex)
LPM response:
<STX>attr:d<ETX>cc
<STX> = ASCII start of text character (02 Hex)
a = Level Plus communication address
t = tank number
rr = register number
: = ASCII colon field delimiter (3A Hex)
d = data (fixed at 1 field of 1 character)
d = 0 = memory write not completed successfully
d = 1 = memory write completed successfully
<ETX> = ASCII end of text character (03 Hex)
cc = optional 2 byte checksum (if enabled)
Error Messages
For all data related output commands, error messages may be present instead of actual data. All
error messages are preceded by an ASCII asterisk character (*) for easy parsing. As with data, all
error messages are left justified so only the first character needs to be checked to determine if an
error message is present. The error message text and format is exactly like those documented in
section 8 of this manual.
NOTE
The user must insure that the proper range of API grav-
ity is specified for the particular API table that is select-
ed or the Level Plus Monitor will indicate the *VCF ERR
error message for NSVP and MASS outputs.
84
To Next Page
Loading...