Note: As a general rule, it is recommended that the total number of ICIM2 or ICIM2-
XD control units connected to any single COM port on the TNCS server be limited to
four (4). However, you may connect more than four ICIM2 or ICIM2-XD control
units per TNCS COM port as long as the total number of devices (modules)
monitored by a single COM port does not exceed four-hundred (400) and the total
number of devices monitored by any single ICIM2 or ICIM2-XD does not exceed 140.
Using TNCS with Multiple Chassis
All chassis within an ICIM domain are connected in series via the ICIM IN/ICIM
OUT connectors using standard 9-wire serial extension cable, DB9 Female to DB9
Male. Using the EM IN/EM OUT connectors, a chassis with an ICIM installed is
connected to a breakout box as shown below.
The breakout box is connected to the TNCS server with the cable included in the RS-
485 cable kit.
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