3980xpi Users Manual - Data I/O Corporation

Transparent Mode
Setting Up
The programmer’s transparent mode allows it to be inline between the host
computer (such as a networked file server) and a terminal, eliminating the
need for a switch box or a second link to the host and enabling you to
communicate with the host and download directly from the host to the
programmer. The terminal connected to the programmer can control both the
programmer and the remote host.
Terminal/
Workstation
T R
In Transparent mode, the programmer passes all characters through its serial
ports (Terminal and Remote), which can operate at different baud rates.
While operating the programmer from the terminal, press ESC CTRL+T to
toggle the programmer between terminal mode and transparent mode.
1. Connect the hardware.
To connect the programmer to a terminal, follow the steps below.
CAUTION: To minimize electromagnetic interference, use only properly
shielded and terminated cables.
1a. Connect one end of an RS-232C serial cable to the serial port connector
on the back of the terminal. Some terminal serial ports may be labeled
Modem; others may be labeled EIA. Refer to the documentation that
came with the terminal for more information.
1b. If you will not be using transparent mode, connect the other end
of the cable to the Terminal port on the back of the programmer, then
go to step 2.
If you will be using transparent mode, connect one end of an RS-
232C serial cable to the serial port connector on the host. If the host is
not available locally (for instance, if the host is a networked VAX),
connect the serial cable to the appropriate serial port. Connect the
other end of the cable to the programmer’s Remote port.
2. Set the communication parameters.
Set the communication parameters of the equipment connected to the
programmer as follows: 9600 baud, 8 data bits, no parity, 1 stop bit, full
duplex, and CTS/DTR handshaking.
Note: CTS/DTR (Hardware Handshake) is enabled as the default. If
those signals are not connected, the programmer will communicate
correctly using XON/XOFF (Software Handshake), which is always
used whether or not CTS/DTR handshake is enabled.
If you are using transparent mode, set the communication parameters on
the serial port on the host as described above.
3980xpi/3980/3900/2900 User Manual 2-7
Host
0544-2