AMT Datasouth Performax - Manual (Page 109)

When the printer is ready for more data, it will transmit the DC1 (X-ON) character.
ETX/ACK: The host will include the ETX character at the end of a string of data. When the
printer detects the ETX character, it transmits an ACK character to the host,
indicating it is ready for more data.
ENQ/ACK: The host will include the ENQ character at the end of a string of data. When the
printer detects the ENQ character, it transmits an ACK character to the host
indicating it is ready for more data.
Serial port configuration can only be selected through the front panel. Only one handshaking
protocol can be selected at a time. The DTR protocol can be selected with any handshaking
protocol. If the user selects modem control, the printer will only receive and transmit data if RTS,
CTS and DSR are honored and provided by the host.
B-8