Solution If no data is sent between the printer and the iOS device for at least 30 seconds, use the following steps to send data. 1) Before sending data, send 100 bytes of dummy data to the printer. As long as it is not related to printing or commands, anything can be used as the dummy data, however we recommend using 00h. 2) Set a waiting time of 100 milliseconds. 3) Send the data. The iOS application cannot receive the data sent from the printer Situation Although the printer sends data to the iOS device and the data is received by the iOS device, depending on the combination of the iOS version and the iOS device, the iOS application may not be able to receive the data.
Conditions This may occur in combinations of the following conditions. • iOS version: 7.1, 7.1.1 • iOS device: iPhone 5s, iPhone 5c, iPhone 5, iPad Air, iPad mini with Retina display, iPad (4th generation), iPad mini, iPod touch (5th generation), iPhone 4s, iPhone 4, iPad (3rd generation), iPad 2 • Printer firmware version: 5.11 ESC/POS or earlier • Application processing: If the Bluetooth port is closed and then reopened while the application is running. Solution The solution differs depending on the iOS device being used. See the following table.
92 iOS Device Solution iPhone 5s iPhone 5c iPhone 5 iPad Air iPad mini with Retina display iPad (4th generation) iPad mini iPod touch (5th generation) This situation can be avoided by using one of the fol- lowing methods. • Use a product with the following firmware. 5.12 ESC/POS or later • Use the ePOS-Print SDK for iOS which is included in the ePOS-Print SDK Release 14.06.30E or later pack- age. iPhone 4s iPhone 4 iPad (3rd generation) iPad 2 This situation can be avoided by using the ePOS-Print SDK for iOS which is included in the ePOS-Print SDK Release 14.06.30E or later package.