6.2 Clock instruction
6.2.1 Read and set the real time clock
Operand
Input / output
Data type
T
VB, IB, QB, MB, SMB, SB, LB, *VD, *AC, *LD
Byte
TODR instruction reads the current time and date from the
hardware clock and load it into the time buffer of 7bytes
starting at the address T.
The TODW instruction writes the current time and date to
the hardware clock that is specified by the 7 bytes time
buffer at the beginning of the T .
All date and time values must be encoded in USINT format.Please refer to the
following table.
T byte
direction
byte data type
0
second
USINT
1
minute
USINT
2
hour
USINT
3
date
USINT
4
week
USINT
5
month
USINT
6
year
USINT
83
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