Explorer FX15 - FX15 I;O Expansion Connection

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FX15 Controller Technical Bulletin

Connection Details for I/O Expansion (XT-XP Modules) on Local

Extension Bus

Figure 12: Connection Details for the XT/XP Modules

Consider the following information when you work with the

connections details for the XT/XP Modules:

• maximum XT modules: 4 XT91D00s

• maximum bus length: 1.2 m (4.0 ft)

• Install a repeater (for example, RP-9100-810x) to regenerate the

RS-485 signal in case more than 31 N2 devices have to be

connected on the same N2 bus trunk and/or the N2 bus trunk length

is more than 1,200 m (4,000 ft).

• Install 220 ohm end-of-line resistors at each end of the XT-Bus line

when the bus length is greater than 100 m (330 ft). When the bus

length is less than 100 m (330 ft), insert only one 220 ohm resistor

at the FX15 end only.