User manual

IEC61131 User and Reference Manual
April 22, 2008
604
Protected Bit Write
The Protected Bit Write function sets or resets individual bits in the I/O database of the slave
device. Access to the I/O database is limited to the protected address range of the slave
device. The data may come from any area of the master I/O database within the 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 protected address range of the slave device.