Hardware Manual for the PCD3 Series│Document 26/789; Version E 5│31.01.2005
Saia-Burgess
Controls Ltd.
Diagnostic information on RIOS
PCD3.Mxxx0 Classic CPUs and expansion housings
3-43
3
Instruction 4: Resetting the preferred switch-off state of the outputs
Master→RIO
Byte 0
Byte 1
Byte 2
Byte3
irrelevant
irrelevant
irrelevant
4
RIO→Master
Byte 0
Byte 1
Byte 2
Byte3
irrelevant
irrelevant
irrelevant
4
Function 4 sets the preferred switch-off state for all outputs to a pre-defined value,
e.g. “0”
Instruction 5: Store I/O configuration in EEPROM
Master→RIO
Byte 0
Byte 1
Byte 2
Byte3
irrelevant
irrelevant
irrelevant
5
RIO→Master
Byte 0
Byte 1
Byte 2
Byte3
irrelevant
irrelevant
irrelevant
0x85/0x05
Function 5 stores the configuration in EEPROM, so that the user can use the web
browser to go online without a Master after switching on the power, and test his/her
configuration without redefining it.
This asynchronous function takes a few milliseconds, depending on the scope of
the configuration. While writing to the EEPROM, the value 0x85 is displayed in the
Diagnostic module. While the instruction is being processed, no new instruction will
be accepted.