User manual

IEC61131 User and Reference Manual
April 22, 2008
605
Unprotected Bit Write
The Unprotected Bit Write function sets or resets individual bits in any area of the I/O
database of the slave device. Access to the I/O database is limited to the unprotected
address range of the slave device. The data may come from any area of the master I/O
database within its unprotected address range.
One 16-bit register with a bitmask is used to write up to 16 bits of data. The register must be
within the unprotected address range of the slave device.