Specifications

54 Chapter 5 - Software Interface
has processed the command and is ready to receive another, indicated by when it
asserts CTS.
The host should assert RTS (Request To Send) when it is ready to accept data,
and de-assert RTS when it cannot accept data. Typically, the host will de-assert
RTS while it is processing a complete packet, then reassert RTS when it is ready
to receive another packet.
To ease troubleshooting of the initial installation, jumper J3 can be used to force
the controller to ignore hardware handshaking.
Hardware handshaking may also be enabled, disabled, or inverted with the
Parameter command (see page 95). It is enabled by factory default.
Duplex
When full-duplex is selected, each character sent to the controller is echoed. When
half-duplex is selected, the controller does not retransmit each received character.
Full-duplex mode is useful when a dumb terminal, also in full-duplex mode, is used
to manually test or set up the controller. Half-duplex mode is used if the terminal is
also in half-duplex mode.
Half-duplex mode is normally used when software is communicating directly with
the controller.
Full or half-duplex is selected with the Parameter command (see page 95). Half-
duplex is the factory default.