Ediseja 21 | CMU 200 | CMU 100/1.5.5-0

CMU 100
RS485 to RS485
repetitor
CMU 100 / 1.5.5-0.0
CMU 100 - RS485 to RS485 repetitor
Project
Communication Units
Device name
CMU 100
Document
421304700101_v1-12_06_23-CMU100 repeat RS485-RS485.ODT
Version
v1
Author
Grega Flander
Date
23.06.12
Reference
document
-
Consultants
-
Approved by
Grega Flander
Code
421304700101
History
1 – first release
2
PREFACE
Liability statement
We have checked the contents of this manual to ensure that the descriptions of both hardware
and software are as accurate as possible. However, deviations may occur so that no liability can
be accepted for any errors or omissions contained in the information given.
The contents of this manual will be checked in periodical intervals, corrections will be made in
the following editions.
We reserve the right to make technical improvements without notice.
Copyright
Copyright © Iskra SISTEMI 2007. All rights reserved.
Warnings
In this paper the following terms are used:
Danger
indicates that death, severe personal injury or substantial property damage will result if proper
precautions are not taken.
Warning
indicates that death, severe personal injury or substantial property damage can result if proper
precautions are not taken.
Caution
indicates that minor personal injury or property damage can result if proper precautions are not
taken. This particularly applies to damage on or in the device itself.
General information
These paper contain the information that is necessary for the proper and safe operation of the
described devices. This paper is intended for technically qualified personnel.
Warning!
Hazardous voltage is present inside the device during operation. Disregarding of safety rules can
result in severe personal injury or property damage.
Only qualified personnel may work with described devices after being familiar with warnings and
safety notices in this paper and other safety regulations.
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CMU 100 - RS485 to RS485 repetitor
Warning!
Device must operate completely assembled! Device must be used as described. No modifications
of the device should be made.
Warning!
Do not open device while it is energized! Hazardous voltage is present inside the device.
Disconnect all connectors before opening!
Warning!
If device is damaged disconnect it from power supply! Send it to the manufacturer for inspection.
Warning!
Connect to earth before attaching power supply!
4
CMU100 SYSTEM
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 communication between two devices on
different voltage levels)
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.
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.
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:






(non)isolated RS232
isolated RS485
Multimode Fiber Optic ST and SMA connectors
USB
ethernet (with one virtual com port)
power supply supervision with digital output
There is possibility to use additional redundancy power supply.
Housing is aluminium and intended for mount on standard DIN 35 rail (acc. to DIN EN 50022). 4
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.
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CMU 100 - RS485 to RS485 repetitor
Picture 1: CMU 100 system general diagram
6
RS485 to RS485 REPETITOR
(TYPE CMU 100 / 1.5.5-0.0)
DESCRIPTION
Communication repetitor is device that extends communication lenght between two devices or
extends RS485 bus.
TYPICAL APPLICATION
Picture 2: CMU 100 converter typical application
HARDWARE DESCRIPTION
This configuration of device is made from main board (power supply, switches and logic switch)
and two RS485 port board.
MAIN BOARD
Main board can handle up to 8 in and up to 8 out lines. That means up to 8 ports with (one) Rx
and (one) Tx line can be used. If port with more input or/and output lines is used number of ports
is reduced. For example if port with Rx, Tx, CTS and RTS lines is used up to 4 ports can be
adopted in the system used.
The right LEDs of one port shows activity on receive (Rx) line and the lower one shows activity
on transmit (Tx) line.
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CMU 100 - RS485 to RS485 repetitor
Configuration of ports
Port
1
2
Interface
RS485
RS485
RS485 INTERFACE BOARD
Description
Single, galvanically isolated, half duplex, RS485 port with Phoenix 3 pin screw connector.
Automatic switch to receive after end of transmission with additional terminating and
stabilizating resistors.
Hardware settings
For proper functioning of that board some settings must be done:
board address
 RS485 bus termination and stabilisation
 baud rate

RS485 bus termination and stabilisation
TERMINATION
At high transmission rates or long distance, RS485 bus termination is necessery.
The termination on RS485 bus must be set on both ends of the RS485 bus.
STABILISATION
Some device, to work properly, demands that RS485 must always be in known and valid state.
That is, when + (positive) pin is more than 200 mV positive than – (negative) pin. Pins + and –
are sometimes marked as A and B. In case that no device on RS485 bus is transmitting or in
case of short circuit, there is no voltage difference between those pins and some device do not
work correctly.
On this port board so called „true fail-safe“ RS485 chip is used so board works correctly without
stabilisation at invalid RS485 bus state. But still switches for stabilisation are provided on port
board. The stabilization on RS485 bus may be set on one device only!
Switches at the right (lower) side of connector:
8
Switch
1 (J13)
2 (J12)
3 (J11)
Description
RS485 stabilisation
RS485 termination
RS485 stabilisation
Picture 3: RS485 BUS schematic
Switches at the left (upper) side of connector:
Baud rate
Switches
BAUD rate
1 (J4)
2 (J5)
3 (J6)
19200
OFF
OFF
OFF
38400
OFF
OFF
ON
57600
OFF
ON
OFF
115200
ON
OFF
OFF
BAUD rate setting 19k2 (bps) is valid for all standard communication protocols, that do not
request special timings. If special protocols (small request-respond time required) are used
please note it in order.
Connector pin table
MSTB
1
2
3
Description
GND
- (B)
+ (A)
Picture 4: RS485 interface board outlook
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CMU 100 - RS485 to RS485 repetitor
Picture 5: Data rate vs cable lenght
Picture 6: RS485 BUS schematic
10
SCHEMATIC
Picture 7: CMU 100 / 1.5.5-0.0 general diagram
MAINTENANCE
Device is maintenance-free. Do not use liquids for cleaning the unit. Disconnect power supply
before cleaning.
TECHNICAL DATA
Power supply
88-250 V DC
Input voltage
70-255 V AC
Power consumption
Power supply indicator
70 V AC
16 mA
1.5 VA
250 V AC
12 mA
3 VA
88 V DC
9 mA
1W
250 V DC
4 mA
1W
light
green LED marked PWR
Voltage dips
20 ms
Connector type
screw type „MSTB“ Phoenix 2pin
Wire crossection
0.5 – 2.5 mm2
Communication port RS485 (interface type 5)
421304700101_v1
Type
RS485
Direction
half duplex
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CMU 100 - RS485 to RS485 repetitor
Communication port RS485 (interface type 5)
Speed
19200, 38400, 57600 or 115200 BAUD
Number of ports
1
Distance
up to 1200 m
Isolation
1000 V DC
„MSTB“ Phoenix 3pin
Connector type
Termination
120 Ohm
Max number of devices
on BUS
32
* slowest interface defines device's maximum speed
Device
0,31 kg
Weight
Dimensions
(see picture)
(D)
(W)
105 mm
111 mm + connectors
40 mm
Temperature range
0 °C to +55 °C
Humidity operating
up to 90 % (noncondensing)
Enclosure
Mount type
Material
Al
IP
20
standard DIN 35 rail (acc. to DIN EN 50022)
Class
I
Overvoltage category
III
Communication indicator
12
(H)
Receiveing
yellow LED marked Rx
Tranmitting
green LED marked Tx
DIMENSIONS
Picture 8: CMU 100 / 1.5.5-0.0 dimensions
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CMU 100 - RS485 to RS485 repetitor
CMU 100 ORDERING
ORDERING NUMBER:
CMU 100 / c . c . c . c . c . c . c . c . c - c . c
Mother Board + enclosure + :
Power supply: 70-250 V AC or 88-250 V DC
2 ports converters (no echo possible, mark Function as 0) ............................................... 1
2 to 8 ports converters, star couplers, ... (echo possible) ................................................... 2
Power supply: 30-60 V AC or 38-80 V DC
2 ports converters (no echo possible, mark Function as 0) ................................................ 5
2 to 8 ports converters, star couplers, ... (echo possible) ................................................... 6
(enclosure width: 2 ports-40 mm, 3&4 ports-55 mm, 5&6 ports-70 mm, 7&8 ports-85 mm)
Interfaces:
none ................................................................................................................ leave empty or 0
RS232 nonisolated, Rx & Tx support ...................................................................................... 1
RS232 isolated, Rx & Tx support ............................................................................................ 2
RS232 nonisolated, Rx, Tx, CTS & RTS support .................................................................... 3
RS232 isolated, Rx, Tx, CTS & RTS support .......................................................................... 4
RS232 nonisolated, Rx & Tx support (LDU version)................................................................ C
RS232 isolated, Rx & Tx support (LDU version)...................................................................... D
RS485 isolated, half duplex (19200-115200 baud) ................................................................. 5
RS485 isolated, half duplex (300-2400 baud) ......................................................................... L
FO multimode ST .................................................................................................................... 6
FO multimode SMA ................................................................................................................. 7
FO singlemode ST................................................................................................................... S
USB (one virtual com port) ...................................................................................................... 8
Ethernet (one virtual com port) ................................................................................................ 9
Digital output ........................................................................................................................... A
Power supervision ................................................................................................................... B
Function:
3 port star coupler / communication node with echo's possible (1 master, 2 slaves).................... 2
4 port star coupler (2 masters, 2 slaves) ...................................................................................... 5
4x2 port converter (one master <-> one slave; 4 independent channels) .................................... 7
6 port star coupler (1 master, 5 slaves) ....................................................................................... 13
8 port node..................................................................................................................................... 8
8 port star coupler (1 master, 7 slaves) ....................................................................................... 12
8 port star coupler (1 master, 6 slaves, 1 listener) .......................................................................14
Software Version:
software version ................................................................................................................. leave empty
14
Example:
CMU 100 / 2.1.5.6.7.B-2
or CMU 100 / 2.1.5.6.7.B.0.0.0-2
is
star coupler / communication node with
- single high voltage power supply and
- 5 interfaces
1. interface is RS232 master port,
2. interface is RS485 slave port,
3. interface is FO with ST connectors slave port,
4. interface is FO with SMA connectors slave port and
5. interface is power supervision.
Accessories:
Description
- power supply cable with „schuko“ plug, 2 m .......................................................
- communication cable CMU 100 RS232 port to PC, 2 m ...................................
- fiber optic cable ST-ST connector, 2 m ..............................................................
Ordering code
421304700030
421304700033
001977263002
For other cable lenghts please contact us.
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