Panasonic FP2 User Manual

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Contents

Panasonic FP2 User Manual Manual pdf 81 page image

SpecificationsFP2 Serial Data Unit7 − 57.2 Table of Shared Memory Areas7.2 Table of Shared Memory AreasShared memory configurationThe configuration of the shared memory in the serial data unit is shown below.Addresses are expressed as decimal numbers, so to specify address 501 in theprogram, “K501” should be specified in the program.Address Contents of allocation Description1 to 250 COM.1 Sent buffer (500 characters) This is the area to which the data to besent to the RS232C device is written.251 to 500 COM.1 Received buffer (500 characters) This is the area in which data already re-ceived from the RS232C device is stored.501 to 750 COM.2 Sent buffer (500 characters) This is the area to which the data to besent to the RS232C device is written.751 to 1000 COM.2 Received buffer (500 characters) This is the area in which data already re-ceived from the RS232C device is stored.1001 COM.1 End code setting area If “Any code” is specified only in the trans-mission format, any desired end codeh ld b ifi d i h l b f hi1002 COM.2 End code setting areass o o at, a y des ed e d codeshould be specified in the lower byte of thisaddress.1003 COM.1 Transmission format setting area To change the transmission format, set anydesired transmission format value for this1004 COM.2 Transmission format setting area desired transmission format value for thisaddress.1005 COM.1 Number of byte of received data The number of received data bytes isstored here.Th d d i l d1006 COM.2 Number of byte of received datasto ed e eThe end code segment is also counted aspart of the number of bytes.Notes• The addresses of the sent buffer for CH1 start from address 1.Do not write data so that it starts from address 0.• The setting areas for addresses 1001 ~ 1004 are used when anend code and transmission format are specified in the sharedmemory. Normally, it is not necessary to write anything tothese areas.