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Electro Industries/GaugeTech
Doc # E107706 V1.25 9-1
Chapter
9
Nexus
External
I/O
Modules
9.1:
Hardware
Overview
Q
All Nexus External I/O modules have the following components:
••
Female RS-485 Side Port: use to connect to another module’s male RS-485 side port.
••
Male RS-485 Side Port: use to connect to the Nexus 1250/1252 Meter’s Port 3 or 4 or to
another module’s female RS-485 side port. See Figure 9.2 for wiring detail.
••
I/O Port: used for functions specific to the type of module; size and pin configuration vary
depending on type of module.
••
Reset Button: Press and hold for three seconds to reset the module’s baud rate to 57600 and its
address to 247 for 30 seconds.
••
LEDs: when flashing, signal that the module is functioning.
••
Mounting Brackets (MBIO): used to secure one or more modules to a flat surface.
I/O Port
(Size and pin
configuration vary)
Female RS-485 Side Port
Male RS-485 Side Port
Integrated Fastening System
Mounting Brackets (MBIO)
LEDs
Reset Button
Figure 9.1: I/O Module Components