16
3.4 RS-422 Serial Connection
For those Quartet housing frames supporting ICP-S, the rear panel includes 2
identical RS-422 ports which may be used interchangeably as the source or daisy
chain loop-through. This port directs communication between a series of housing
frames and a remote Windows NT workstation. A module's configuration may be
modified from this workstation without the need to push buttons or position jumpers.
Refer to the following steps for a single Quartet or multi-Quartet to remote Windows
NT workstation installation.
Single Quartet Installation:
1. Connect the RS-422 cable of Figure 3.7 between the PC/RS-422 converter and
one of the RS-422 ports situated on Quartet's rear panel.
2. Connect the Windows NT workstation and the PC/RS-422 converter with a
proper cable. Refer to the converter vendor documentation.
3. The final step in a single Quartet installation is the serial identification
assignment required for the housing frame. Refer to section 3.
5 RS-422 Serial
ID Assignment
.
Multi-Quartet Installation:
1. Connect the RS-422 cable of Figure 3.7 between the PC/RS-422 converter and
one of the RS-422 ports situated on the first housing frame in the daisy chain.
2. Connect the Windows NT workstation and the PC/RS-422 converter with a
proper cable. Refer to the converter vendor documentation.
3. A maximum of 16 Quartets, a maximum of 16 Symphonies, and a maximum of
16 Solos can be daisy chained together. Therefore, interconnect the housing
frames as shown in Figure 3.4 using appropriate cables (refer to section 3.6).
The final housing frame requires the supplied termination.
4. The final step in a multi-housing frame installation is the serial identification
assignment required for each individual housing frame. Refer to section 3.5
RS-422 Serial ID Assignment
.
Figure 3.4
Daisy chain installation
T
PC/RS-422
Converter
ID = 0
ID = 0
ID = n
ID = 1
ID =0
See Figure 3.7
See Figure 3.8
Symphonie
Quartet-C
Solo
Quartet-C
= Termination
T
Quartet-C
Workstation
See Figure 3.9