I/O Allocation4-24.1 Input/Output Signals Used for Communication4.1.1 I/O Allocation of CPU Unit Input signalInputsignalCommunicationport Name DescriptionEffectiveoperationmodeX0 For COM.1 PortX1 For COM.2 PortX2 For COM.0 PortGeneral-purposecommunicationReceptiondone flagWhen the unit completes the data reception,it turns on (1).Waiting for data reception: 0, Receptioncompleted: 1General-purposecommunicationX3 - Not used Do not use this.X4 For COM.1 PortX5 For COM.2 PortX6 For COM.0 PortGeneral-purposecommunicationReceptiondone (copy)flagIt turns on (1) if there are copied data whenGPRECV instruction is executed. It turns off(0) when END instruction is executed.(Note 1)Reading completed: 1No data to be read: 0General-purposecommunicationX7 - Not used Do not use this.X8 For COM.1 PortX9 For COM.2 PortXA For COM.0 PortGeneral-purposecommunicationClear to sendflagIt turns on (1) when the unit is set to thegeneral-purpose communication mode. Itturns off (0) in other modes.General-purposecommunicationXB - Not used Do not use this.XC For COM.1 PortXD For COM.2 PortXE For COM.0 PortMastercommunicationClear to sendflagIt turns on (1) when the unit is set to modesother than the PLC link mode or general-purpose communication mode. It turns off (0)in other modes.MEWTOCOLMODBUS-RTUXF - Not used Do not use this.X10 For COM.1 PortX11 For COM.2 PortX12 For COM.0 PortReset doneWhen the communication channel is resetunder the output Y10 - Y12, the flag isturned on (1) once the resetting operation iscompleted.Resetting done: 1Y10 - Y12 is off: 0General-purposecommunicationX13 - Not used Do not use this.X14 For COM.1 Port CTS signalmonitorStatus of the CTS signal sent from thedevice communicating with.Clear to send from COM.1 port = 0Cannot send from COM.1 port = 1The RTS signal can be controlled with Y14.When RS/CS isset to valid inCommunicationBlock COM.1.X15- X1F - Not used Do not use this.(Note 1) The general-purpose communication reception done (copy) flag is effective after the execution of the RECVinstruction until one of the following instructions is executed. This flag does not remain ON across several scans.Execute 1: END instruction (scan header), and 2: RECV instructionPhone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: info@clrwtr.com
