Epson TM-H6000IV-DT ePOS-Device XML Users Manual - Page 35
Programming flow for the Communication Box, Applic, tion B, Device
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Chapter 3 Programming Guide Programming flow for the Communication Box The following indicates the basic programming sequence using the Communication Box. Application A ePOS-Device Application B [1/2] 1 : Establishment of TCP/IP connection() TCP connection to Socket I/F from the native application 2 : connect message() Establishes communication path with ePOS-Device Service I/F 3 : open_commbox message 1 : Establishment of TCP/IP connection() TCP connection to Socket I/F from the native application 2 : connect message() Establishes communication path with ePOS-Device Service I/F 3.1 : Creates the Communication Box 3.2 : Adds Application A to members 3 3.3 : Response() 3 : open_commbox message 3.2 : Adds Application B to members 4 : commbox_data message(type:send) 4.3 : Response() 3.3 : Response() 4.2 : commbox_data message (type:onreceive) 35