CMU 100 - RS485 to 2x RS232 fallback switch
2 CMU 100 SYSTEM
2.1 DESCRIPTION
Communication unit (CMU 100) is modular system of communication devices that can be used
for various of tasks such as:
communication converter (for example RS232 to RS485)
star coupler (for example 1 fiber optic to 7 fiber optics)
repeater (for example RS485/485)
communication isolator (for example for preventing ground loops)
communication listener - debugger
PC serial com port extender (for example USB to 4 serial com)
CMU 100 device is a couple of software and hardware. For different purposes, different software
versions and different hardware configuration have been developed.
2.1.1 SOFTWARE
Software is application dependent and allows different hardware configurations. Software's task
is switching between communication ports and allows almost any combination between them.
2.1.2 HARDWARE
Hardware is based on main board with power supply and port switching logic. On that board,
interface boards are attached. CMU 100 can handle up to 8 different interface boards. Currently
available interface boards:
RS232
isolated RS485
Multimode Fiber Optic with ST and SMA connectors
Singlemode Fiber Optic with ST, FC & SC connectors
Versatile Link Fiber Optic 1 mm plastic cable
USB
ethernet (with one virtual com port)
Housing is aluminium and intended for mount on standard DIN 35 rail (acc. to DIN EN 50022). 3
different housings have been made. Depends on how many interfaces device has, appropriate
housing is used.
Hardware settings
All settings on the device can be made from outside by a DIL switch. It is not necessary to open
the housing.
Device:
Document:
Code:
Date:
Page:
User manual CMUMU511
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