Appendices; Connecting To The Rs232 Serial Port; Connecting To Ibm Rs6000 Workstations; Connecting To Sgi Workstations - Logitech LogiCad3D Magellan/SPACE MOUSE Classic User Manual

Appendices

Connecting to the RS232 Serial Port

The Magellan/SPACE MOUSE is equipped with
a 9-pin D-Sub female connector. The wiring of
this connector matches any IBM-compatible PC
with a 9-pin serial connector. To use the
Magellan/SPACE MOUSE with other computers,
check the pin functions against the list shown
below and verify whether the Magellan/SPACE
MOUSE connector wiring matches your system.
If not, you must use an appropriate adapter
cable to connect the Magellan/SPACE MOUSE
wiring to that of your computer.
Pin Meaning
Case Shield
2 TxD
3 RxD
4 Supply
5 GND
7 CTS
8 RTS
The use of the handshake signals (CTS, DTR
and RTS) is absolutely necessary for the safe
operation of the Magellan/ SPACE MOUSE.
Without these handshake signals, loss of data
will occur. Additionally, the signal lines (DTR
and RTS) are used to supply power to the
Magellan/SPACE MOUSE. Thus no external
power supply is required. The minimum output
voltage has to be 5 V, providing a output
current of 9 mA on both signal lines.
Communication via the serial port using the
XON/XOFF protocol is supported by the
Magellan/SPACE MOUSE, but the handshake
signals (CTS, DTR and RTS) are needed for
safe operation. Thus the status of the
handshake signals has to be carefully checked
and treated by the computer. To activate the
Magellan/SPACE MOUSE, these signals should
have a positive (active) level.

Connecting to IBM RS6000 Workstations

The IBM–Magellan/SPACE MOUSE adapters for
25-pin and 9-pin D-Sub male RS232 ports use
the wiring schemes shown in the following
diagrams.
Connection to
Computer
Case
RxD
TxD
DTR
GND
RTS
CTS
Pin No.
25-p. D-Sub f.
connector
shield ────────────────── shield
2 ────────── TxD ────────── 3
3 ────────── RxD ────────── 2
4 ────────── RTS ────────── 7
5 ────────── CTS ────────── 8
7 ────────── GND ────────── 5
20 ────┬───── DTR ────────── 4
6 ────┤
8 ────┘
(to RS232)
Pin No.
9-p. D-Sub f.
connector
shield ────────────────── shield
1 ────┐
2 ────│───── RxD ────────── 2
3 ────│───── TxD ────────── 3
4 ────┤───── DTR ────────── 4
5 ────│───── GND ────────── 5
6 ────┘
7 ────────── RTS ────────── 7
8 ────────── CTS ────────── 8
(to RS232)

Connecting to SGI Workstations

If the 8-pin mini-DIN female RS232 connector
on an SGI workstation is used, the converter-
adapter cable shown in the following diagram
is required. The cable changes the mini-DIN
connector to that of the Magellan/SPACE
MOUSE and converts, if necessary, the 4 V
Pin No.
8-p. mini-DIN m.
1 ──────── DTR (4V conv. 7V) ─── 1
2 ──────── CTS not used ────── 5
3 ──────── TxD ──────────── 3
4 ──────── GND ──────────── 5
5 ──────── RxD ──────────── 2
6 ──────── RTS ──────────── 7
7 ──────── DCD not used
8 ──────── GND ──────────── 5
connector ───────────── connector
shield
(to RS232)
20
Pin No.
9-p. D-Sub m.
connector
DSR
DCD
(to Mag./S.M.)
Pin No.
9-p. D-Sub m.
connector
DCD
DSR ────────── 6
(to Mag./S.M.)
Pin No.
9-p. D-Sub m.
shield
(to Mag./S.M.)
1