Chapter 4 Application Development Information Printer settings 1 Use TM-T88VI Utility, Epson TM Utility, or EpsonNet Config (Web version) to configure the following settings. • Automatic Update of CA-signed certificates: Enable the setting • Update time: Set the time to update the certificate • Time Configuration: Set correct time (TimeServer or UTC, and time difference) • Proxy: Set up proxy as needed 4 99 2 Connect the host device and printer to an Internet environment. 3 Print from application software developed using Epson ePOS SDK for JavaScript. To use this function, the host name of the printer must be designated when executing a connect method.
The host name is generated by converting the serial number of the printer. A program to enter the printer’s serial number is necessary on the application side. Refer to the sample programs in Epson ePOS SDK for JavaScript for information on how to convert to the host name. Operation Check Print the status sheet to check the status of the automatic update of CA-signed certificates. Auto Cert Update / Automatic update of CA-signed certificates setting • Disable: Certificates are not automatically updated • Enable: Certificates are automatically updated Server Access / Result of the last communication with the server for automatic certificate update • OK: Successfully communicated • Unknown:
Was not communicating or is in communication • NG (Failure): Communication failed If "NG (Failure)" is printed, check the following. • Is the printer connected to the Internet? • Is the time setting of the printer correct?