S300 Expansion Enclosures CK721-A Installation and Operation
3-24 24-10349-8 Rev. B
This document contains confidential and proprietary information of Johnson Controls, Inc.
© 2012 Johnson Controls, Inc.
NOTE
It is difficult to set the switches of the first level modules and connect the
RS-485 cables once the stacked modules are installed.
Each module is shipped with an RS-485 cable. The first module connects the cable
between J5 on the CK721-A and one of the RS-485 connectors listed in Table 3-11
depending on which module is installed.
Additional modules are connected
in daisy-chain fashion. For example, using the
supplied cable shipped with a second module, connect the unused RS-485 on the
first module, and then connect the other end to a RS-485 interface on the second
module.
Table 3-11: RS-485 Connector Positions
Module Connector Positions
S300-RDR2 J7, J8
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