8.6.5 PROPER DSAI INSTALLATIONS
Here are some examples of DSAi installations that will work reliably, both avoiding loops and keeping EIA- 485 running well. These can be used as a basis for larger and more complex installations.
PC
DSA
PILOT
485 | CM1 | SLink |
| DSA "A" |
|
| PLink |
|
485 | CM1 | SLink |
| DSA "B" |
|
| PLink |
|
485 | CM1 | SLink |
| DSA "C" |
|
| PLink |
|
485 | CM1 | SLink |
| DSA "D" |
|
| PLink |
|
EXAMPLE 1:
This is a simple
Figure 8.6.5a Example 1
Cobranet
Unit
PC
DSA
PILOT
485 | CM1 | SLink |
| DSA "A" |
|
| PLink |
|
485 | CM1 | SLink |
| DSA "B" |
|
| PLink |
|
Ethernet
Switch
485 | CM1 | SLink |
| DSA "C" |
|
| PLink |
|
485 | CM1 | SLink |
| DSA "D" |
|
| PLink |
|
EXAMPLE 2:
This is a standard CobraNet connection. Just like computers connected using Ethernet, each module, whether used singly or in a cluster, requires its own a connection to a network switch. No Link cables are used. The DSAPilot PC communicates to all DSAi modules through the serial bridge in the CobraNet Unit.
Figure 8.6.5b Example 2
40