Precision Digital PD865 - Manual (Page 80)

PD865 Modbus Snooper Serial Input Meter Instruction Manual
80
Float decimal point setting is found in Holding Register 40028.
Examples using Float (register values are shown in hexadecimal):
Displayed
Process Value
Register
40001 - 40002
Register
40013
1.234 3F9D F3B6 0003
12.34 4145 70A4 0002
123.4 42F6 CCCD 0001
-123.4 C2F6 CCCD 0001
Note 4. A read of the Lock register will return 0x0000 if the meter is unlocked,
otherwise it will return 0xFFFF to indicate a locked meter. To unlock,
the correct lock number must be written, which will then clear the lock
number to 0x0000. If the wrong lock number is written, the reply will
return 0xFFFF. If the correct lock number is written, the reply will be
0x0000. An unlocked meter can be locked by writing any non-zero
value (from 1 to 9999).
Note 5. For the complete floating point standard, see IEEE 754-
1985 Standard for Binary Floating-Point Arithmetic.