Epson 4100 manual Etx/Ack

Operator's Guide B-15

In the configuration menu, you may select whether the printer sends an X-ON every 20 seconds during periods when it is ready to receive data (called robust) or only once.

X-ON is ASCII character decimal number 17, and X-OFF is ASCII character decimal number 19. These are sometimes referred to as device control 1 (DC1) and device control 3 (DC3), respectively.

ETX/ACK

ETX/ACK is a commonly used when computers control the handshake.

The computer sends its characters line-by-line. After each line is sent, the computer puts in an END OF TEXT character, ETX. When the printer is ready to receive the next line of data, it sends an ACKNOWLEDGMENT character, ACK, back to the computer.

ETX is ASCII character decimal number 3, and ACK is ASCII character decimal number 6.