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What is the maximum total length of the RJ45 control cable for connecting multiple 34945EXTs?

The total length of the RJ45 cable between all 34945EXT modules of a system must be less than or equal to 140 feet. For a system with two 34945EXT modules, the max cable length is 140 feet. The spec we have says a maximum of 20 feet between modules, assuming 8 modules total. The important parameter is the total cable length, so if there are only two modules, the maximum length of the cable between them is 140 ft (20 feet x 7 spaces = 140 ft).