CommunicationFP0R User's Manual 111U Command name/error codeNormal processing: The command name is stored here.Error condition: The error code is stored here.I Response codeNormal processing: "$" (ASCII code: 16#24)Error condition: ! (ASCII code: 16#21)If the response contains an "!" instead of a "$", check the meaning of the errorcode. If no response is returned, the command may not have arrivedat the slave, or the slave may not be functioning. Check to makesure all of the communication specifications (e.g. baud rate, datalength, and parity) match between the master and the slave. Station number and command name are always identical in acommand and its corresponding response (see below). Thismakes the correspondence between a command and a responseclear.Q Command message W Response message6.5.3 CommandsCommand name Code DescriptionRead contact area RC(RCS)(RCP)(RCC)Reads the on and off status of contacts.- Specifies only one point.- Specifies multiple contacts.- Specifies a range in word units.Write contact area WC(WCS)(WCP)(WCC)Turns contacts on and off.- Specifies only one point.- Specifies multiple contacts.- Specifies a range in word units.Read data area RD Reads the contents of a data area.Write data area WD Writes data to a data area.Read timer/counter setvalue areaRS Reads the value set for a timer/counter.Write timer/counter setvalue areaWS Writes a timer/counter setting value.Read timer/counter elapsedvalue areaRK Reads the timer/counter elapsed value.Write timer/counterelapsed value areaWK Writes the timer/counter elapsed value.N o t e
