I/O Number Allocation3.1 Input/Output Signals Used for Communication3.1.1 Occupied Area for Communication cassette (Ethernet type)A fixed area is allocated as follows. List of occupied words and I/O points by unitOccupied words(occupied I/O points)Unit Type Model numberInput OutputCPU UnitCommunicationcassette(Ethernet type)AFP7CCET1 4words(64points)WX0 - WX32words(32points)WY0 - WY13.1.2 I/O Number Allocation Input signal (COM.1 port for User connection)InputsignalCommunication port Name DescriptionEffectiveoperationmodeX0 For COM.1PortGeneral-purposecommunication Receptiondone flagWhen the unit completes the data reception, itturns on (1).Waiting for data reception: 0, Receptioncompleted: 1General-purposecommunicationX1 - X3 - Not used Do not use this. -X4 For COM.1PortGeneral-purposecommunication Receptiondone (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-purposecommunicationX5 - X7 - Not used Do not use this. -X8 For COM.1PortGeneral-purposecommunication Clear tosend flagIt turns on (1) when the unit is set to thegeneral-purpose communication mode. Itturns off (0) in other modes.General-purposecommunicationX9 - XB - Not used Do not use this. -XC For COM.1PortMastercommunication Clear tosend flagIt turns on (1) when the unit is set to modesother than the general-purposecommunication mode. It turns off (0) in othermodes.MEWTOCOLXD - XF - Not used Do not use this. -X10 For COM.1Port Reset doneWhen the communication channel is resetunder the output Y10, the flag is turned on (1)once the resetting operation is completed.Resetting done: 1Y10 is off: 0General-purposecommunicationX11 - 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 severalscans. 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