Appendix H: IRIS Workstation RS-232 Interface
An IRIS Workstation can be connected to a serial line through
Port 2
,
Port 3
or
Port 4
on the Cabinet I/O Panel. These serial ports can be used with terminals
(see Sections 4.6 and 6.8), modems (see Sections 4.6 and 6.9) and printers (see
Sections 4.6 and 6.10).
RS-232 Pin Definitions
1
2
3
4
5
6
7
8
20
22
Protective Ground (PG)
Transmit Data (TD)
Receive Data (RD)
Request To Send (RTS)
Clear to Send (CTS)
Data Set Ready (DSR)
Signal Ground (SG)
Data Carrier Detect (DCD)
Data Terminal Ready (DTR)
Ring Indicator (RI)
Table H-1: RS-232 Pin Definitions
The serial ports on the Cabinet I/O Panel are
Data Terminal Equipment
(DTE)
type RS-232 ports. The IRIS Workstation asserts the
Data Terminal Ready
(DTR)
signal on pin 20. This is provided for hosts that expect to see
Data Carrier
Detect
(DCD) on pin 8 and/or
Data Set Ready
(DSR) on pin 6. DCD or DSR
signals are not required for a serial line connection.
Figure H-1 shows a three-wire connection for the IRIS Workstation:
Transmit
Data
on pin 2,
Receive Data
on pin 3 and
Signal Ground
on pin 7.
Figure H-2 shows a five-wire connection that can be enabled by connecting pin
20 (
Data Terminal Ready
) from the IRIS Workstation port to pin 8 (
Data Carrier
Detect
) on the modem. Then connect pin 20 on the modem to pin 8 on the IRIS
Workstation port.
A full modem can be connected to the IRIS Workstation by connecting each pin
on the modem side to its partner on the IRIS Workstation port. Note that lines
6 (
Data Set Ready
) and 22 (
Ring Indicator
) are not required for the IRIS
Workstation.
Version 1.0
Summary of Contents for IRIS Workstation
Page 1: ...IRIS Workstation Guide Version 1 0 Silicon Graphics Inc Mountain View California 94043 ...
Page 6: ...2 IRIS WORKSTATION GUIDE Version 1 0 Introduction ...
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Page 30: ...26 IRIS WORKSTATION GUIDE Version 1 0 Operation ...
Page 48: ...44 IRIS WORKSTATION GUIDE Version 1 0 System Administration ...
Page 50: ...46 IRIS WORKSTATION GUIDE Version 1 0 Appendix A ...
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