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ROC827 Instruction Manual
Issued Mar-06 Communications 5-3
5.2 Installing Communication Modules
All communication modules install into the ROC827 in the same way.
You can install or remove communication modules while the ROC827 is
powered up (hot-swappable), you can install modules directly into unused
module slots 1, 2, or 3 (hot-pluggable), and modules are self-identifying in
the software. All modules are self-resetting after a fault clears.
Note: The dial-up modem module is not hot-swappable or hot-pluggable.
When you install a dial-up modem module, you must remove power from
the ROC827.
Figure 5-2. Example RS-485 Communications Module
Caution
When working on units located in a hazardous area (where explosive
gases may be present), make sure the area is in a non-hazardous state
before performing procedures. Performing these procedures in a
hazardous area could result in personal injury or property damage.
Note: You can install communications modules only in slots 1, 2, or 3 of
the ROC827. Refer to Figure 5-1.
1. Remove the wire channel cover.
Note: Leaving the wire channel cover in play can prevent the module
from correctly connecting to the socket on the backplane.
2. Perform one of the following: