User manual
ADA-4028LA
Addressable RS485/422 to 2-WIRE Current Loop CLO
Baud Rate Converter
1
io_ada-4028la_v4.02_en
ADA-4028LA
Copyright © 2001-2017 CEL-MAR sp.j.
Contents
1. GENERAL INFORMATION...................................................................................................................................................................... 3
1.1. WARRANTED INFORMATION.......................................................................................................................................................3
1.2. GENERAL CONDITIONS FOR SAFE USE....................................................................................................................................3
1.3. CE LABEL....................................................................................................................................................................................... 3
1.4. ENVIRONMENTAL PRESERVATION............................................................................................................................................ 3
1.5. SERVICE AND MAINTENANCE..................................................................................................................................................... 3
1.6. PACK CONTENTS.......................................................................................................................................................................... 3
2. PRODUCT INFORMATION.....................................................................................................................................................................3
2.1. PROPERTIES................................................................................................................................................................................. 3
2.2. DESCRIPTION................................................................................................................................................................................ 4
2.3. CURRENT LOOP TRANSMITTER & RECEIVER.......................................................................................................................... 5
2.4. ISOLATION..................................................................................................................................................................................... 5
3. INSTALLATION....................................................................................................................................................................................... 5
3.1. ASSEMBLING.................................................................................................................................................................................5
3.2. CONNECTION TO PC.................................................................................................................................................................... 5
3.3. CONNECTION TO RS485/422 BUS............................................................................................................................................... 6
3.3.1. CONNECTION TO RS485 (4-WIRE) BUS.............................................................................................................................6
3.3.2. CONNECTION TO RS485 (2-WIRE) BUS.............................................................................................................................7
3.3.3. GND TERMINALS CONNECTION.........................................................................................................................................7
3.3.4. LINE TERMINATION.............................................................................................................................................................. 7
3.3.5. CONNECTION OF CURRENT LOOP DEVICES...................................................................................................................7
3.3.5.1. CONNECTION OF DEVICE WITH PASSIVE INTERFACE CLO..................................................................................8
3.3.5.2. CONNECTION OF DEVICE WITH ACTIVE INTERFACE CLO....................................................................................8
3.3.5.3. CONNECTION OF 4 DEVICES WITH THE PASSIVE CLO INTERFACE....................................................................9
3.4. POWER SUPPLY...........................................................................................................................................................................9
4. ACTIVATION........................................................................................................................................................................................... 9
4.1. SIGNALING LEDS.......................................................................................................................................................................... 9
4.2. SENSITIVITY SETTING OF CURRENT LOOP CLO RECEIVER..................................................................................................9
5. CONFIGURATION................................................................................................................................................................................. 10
5.1. OPERATION MODE..................................................................................................................................................................... 10
5.2. CONFIGURATION BY THE USE OF ADACONFIG..................................................................................................................... 10
5.2.1. CONFIGURATION OF ADDRESSING MODE..................................................................................................................... 10
5.2.2. CONFIGURATION OF BAUD RATE AND DATA FORMAT.................................................................................................10
5.2.3. CONFIGURATION DATA FLOW CONTROL.......................................................................................................................10
5.3. FIRMWARE UPDATE................................................................................................................................................................... 11
5.4. EMERGENCY FIRMWARE UPDATE...........................................................................................................................................12
5.5. FACTORY DEFAULT.................................................................................................................................................................... 12
5.6. DATA TRANSMISSION DIAGNOSTICS.......................................................................................................................................13
6. OPERATION.......................................................................................................................................................................................... 13
6.1. OPERATION IN NON ADDRESSABLE MODE............................................................................................................................13
6.2. OPERATION IN ADDRESSABLE MODE.....................................................................................................................................13
7. CHANGES IN THE SOFTWARE...........................................................................................................................................................14
8. VERSIONS............................................................................................................................................................................................ 14
9. SPECIFICATION................................................................................................................................................................................... 15
2
ADA-4028LA
1. GENERAL INFORMATION
Thank you for your purchase of CEL-MAR Company product. This product has been completely tested and is covered by a two year
warranty on parts and operation from date of sale.
If any questions or problems arise during installation or use of this product, please do not hesitate to contact Technical Support at +48
41 362-12-46 or e-mail support@cel-mar.pl.
1.1. WARRANTED INFORMATION
The ADA-4028LA converter is covered by a two year warranty from date of sale. In case of being damaged it will be repair or the
damaged component will be replace. The warranty does not cover damage caused from improper use, materials consumption or any
unauthorized changes. If the product does not function (is damaged), or not operate in accordance with the instructions, will be
repaired or replaced.
All warranty and no warranty repairs must be returned with paid transport and insuring to the CEL-MAR Company.
CEL-MAR Company under no circumstances won't be responsible for ensuing damage from improper using the product or as a result
of random causes: the lightning discharge, the flood, the fire and the like.
CEL-MAR Company is not be held responsible for damages and loss including: loss of profits, loss of data, pecuniary losses ensuing
from using or the impossibility of using this product.
In specific cases CEL-MAR Company discontinue all warranties and in particular do not follow the user manual and do not accept
terms of warranty by the user.
1.2. GENERAL CONDITIONS FOR SAFE USE
The device should be installed in a safe and stable places (eg, electroinstallation cabinet), the powering cable should be arranged so
as not to be exposed to trampling, attaching, or pulling out of the circuit.
Do not put device on the wet surface.
Do not connect devices for nondescript powering sources,
Do not damage or crush powering wires.
Do not make connection with wet hands.
Do not adapt, open or make holes in casings of the device!
Do not immerse device in water or no other liquid.
Do not put the fire opened on device sources: candles, an oil lamps and the like.
Complete disable from the supply network is only after disconnecting the power supply circuit voltage.
Do not carry out the assembly or dis-assembly of the device if it is enabled. This may result to short circuit and damage the device.
The device can not be used for applications that determine human life and health (eg. Medical).
1.3. CE LABEL
The CE symbol on the device CEL-MAR means compatibility with electromagnetic compatibility Electromagnetic
Compatibility Directive EMC 2014/30/WE. Declaration of Conformity is available by contact with Technical Service
(email: support@cel-mar.pl; phone: +48 41 362-12-46).
1.4. ENVIRONMENTAL PRESERVATION
This sign on the device inform about putting expended device with other waste materials. Device should send to the
recycling. (In accordance with the act about the Electronic Appliance Expended from day 29 of July 2005)
1.5. SERVICE AND MAINTENANCE
ADA-4028LA converter does not require the servicing and maintenance.
Technical support is available at number +48 41 362-12-46 in 8.00-16.00, from Monday to Friday.
1.6. PACK CONTENTS
The converter is delivered with the user manual, resistors: Rt=120W (2 pcs.), Rd = 220W and 120W, CD with ADAConfig software.
2. PRODUCT INFORMATION
2.1. PROPERTIES
● Possibilities of adding the address to no-addressable device, connected to Current Loop CLO port.
● The conversion of parameters and baud rate on RS485/422 and CLO ports of the converter ,
● Operating on 2-wire bus in Current Loop standard,
● Operating up to 4 devices on Current Loop bus,
● Operating on 2-wire or 4-wire bus in point-to-point and multipoint topology,
● Operating up to 32 devices on RS485 bus,
● The baud rate (bps) on Current Loop CLO: 300, 600, 1200, 1800, 2400, 4800, 7200, 9600, 14400, 19200,
● The Current Loop CLO data format: Number of data bites: 5, 6, 7, 8; Parity: None, Odd, Even; Number of stop bits : 1, 2,
● The baud rate (bps) on RS485/422: 300, 600, 1200, 1800, 2400, 4800, 7200, 9600, 14400, 19200, 28800, 38400, 57600, 76800,
115200, 230400,
● The RS485/422 data format: Number of data bites: 5, 6, 7, 8; Parity: None, Odd, Even; Number of stop bits : 1, 2,
● Transparent for all protocols which data format is in accordance with the above specifications of Current Loop and RS485/422
interfaces,
● Power supply 10 - 30 VDC stable,
● 3kV= optoizolation in signal channel between Current Loop interface and RS485/422 interface,
● 1kV= or 3kV= galvanic isolation between RS485/422 interface and power supply,
● 1kV= or 3kV= galvanic isolation between Current Loop CLO interface and power supply,
● Implemented short circuit protection and over-voltage protection on the lines RS485/422 interface,
3
ADA-4028LA
● Implemented short circuit protection and over-voltage protection on the lines Current Loop interface,
● Protection against power supply reverse connection,
● Connection of RS485/422 bus and power supply via screw terminal block, cross section up to 2.5 mm2,
● Connection of Current Loop CLO via screw terminal block, cross section up to 2.5 mm2,
● DIN 43880 standard - mounting in typical electro-installation unit,
● Rail mounting according to DIN35 / TS35 standard,
● Dimensions (W x D x H) 53mm x 62mm x 90mm.
2.2. DESCRIPTION
The ADA-4028LA addressable baud rate converter is device solving the problem of connecting no addressable devices equipped with
the Current Loop CLO interface to multipoint RS485/422 bus by adding the address to the no-addressable device. At the same time
the converter converts RS485/422 standard to Current Loop CLO standard with possibility of changing the baud rate and format of the
transmitted data. Depending on the configuration can be set the baud rate, number of data bites, parity (None, Odd, Even) and
number of stop bits. The setting can be different for Current Loop CLO port and RS485/422 port.
The ADA-4028LA supports the asynchronous baud rate up to 230,4 kbps via one or two pairs of twisted-pair cables of RS485/422
interface, and up to 19,2 kbps on 2-wire Current Loop CLO bus.
The ADA-4028LA converter with active transmitter allows connection to the RS485/422 bus devices with passive Current Loop CLO
interface eg. energy meters like POZYTON LZQM, ELSTER A1500, PAFAL and others, with possibility of conversion the format and
baud rate between connected devices to Current Loop CLO interface and RS485/422 bus.
The ADA-4028LA is equipped with screw terminal block for connection of RS485/422, Current Loop CLO and power supply. Overvoltage protection on each RS485/422 lines and Current Loop, was made on the base over-voltage LED's and the fuses. To
RS485/422 bus created by the use ADA-4028LA, is possible to connect 32 devices, operating in half duplex mode (query /response)
on 2 or 4 wires multipoint bus or full duplex on 4-wire bus. To Current Loop CLO bus created by the use ADA-4028LA (active), is
possible to connect 4 devices operating in half duplex mode.
The converter has an internal low-energy surge protection for each line of Current Loop CLO interface. However, for the lightning
protection should be used external lightning arresters such as the typical phone line protection.
Fig. 1. View ADA-4028LA and location SW1 switch
4
ADA-4028LA
62mm
Power Supply
10 - 30 VDC
(SW1)
GND
TX+ /A
TX- /B
RX+
RX-
(RS485/RS422)
RS-485 4-wires
or RS-422
RS-485
2-wires
Power Supply
10 - 30 VDC
90mm
53mm
10mm
10mm
(SW1)
GND
TX+ /A
TX- /B
RX+
RX-
(RS485/RS422)
RS-485 4-wires
or RS-422
RS-485
2-wires
NCNCNCNCCLO -
CLO +
CLO R+RdV -
V +
10 – 30
VDC
(CURRENT LOOP)
NCNCNCNCCLO -RdNC
CLO +
(CURRENT LOOP CLO)
V -
V +
10 – 30
VDC
CURRENT LOOP INTERFACE
WITH ACTIVE TRANSMITTER
CURRENT LOOP INTERFACE
WITH PASSIVE TRANSMITTER
PWRTXRX
ADA-4028LA
ADDRESSABLE
RS485/422 to 2-WIRE CURRENT LOOP
BAUD RATE CONVERTER
CLO
PWRTXRX
ADA-4028LA
ADDRESSABLE
RS485/422 to 2-WIRE CURRENT LOOP
BAUD RATE CONVERTER
CLO
P
2.3. CURRENT LOOP TRANSMITTER & RECEIVER
The converter ADA-4028LA is produced with active or passive Current Loop transmitter.
The converter with Current Loop active transmitter has the transmitter on base power source generating the 0-20mA or 0-30mA
(depend on version) and passive receiver comprising the optocoupler. ADA-4028LA with Current Loop passive transmitter has the
transmitter on base power source generating the 20mA or 0-30mA (depend on version) and passive receiver comprising the
optocoupler.
2.4. ISOLATION
Converter ADA-4028LA has 3-way, 1kV= or 3kV= galvanic isolation (depend on version, described in section VERSIONS).
Fig. 2. Isolation diagram
3. INSTALLATION
This chapter will show how to connect ADA-4028LA to RS485 bus, Current Loop line and power supply and how to use it.
To reduce disturbance from environment, it is recommended to:
– use multipair type shielded cables, which shield can be connected to the earthing on one end of the cable,
– use the suitable diameter cable for power supply on account of voltage drop,
– use the powering cable with a suitable section because of the voltage drops,
– use the interference eliminators for powering the converter,
– lay signal cables at a distance of not less than 25 cm away from power cables,
– not powering the converters form the power-circuit of devices generate large impulse disturbance like contactors, relays, inverters.
3.1. ASSEMBLING
ADA-4028LA converter case is adapted to assembly on TS-35 (DIN35) rail. To install converter should mount device on the rail upper
part of the case then press bottom part to hearing characteristic „Click” sound.
3.2. CONNECTION TO PC
The ADA-4028LA can be connected to RS232 port or USB of PC by the use of additional converter eg. RS232 to RS485 (ADA-1040)
or USB to RS485 (ADA-I9140). The connection is made via RS485 bus or RS422 bus, as on the figure bellow.
Fig. 3. The 4-wire connection of ADA-4028L to PC by the use of USB to RS485/RS422 converter ADA-I9140/ADA-I9141
5
Power Supply
10 - 30VDC
RS485 Current Loop
3-WAY ISOLATION
ADA-4028LA
Rd
.
CLO+
NC
CLO-
GND
USB
USB
connector
RS485 / RS422
connector
RS485(4W)
USB
connector
PC ADA-I9140
USB
Rx+
Rx-
Tx+/ A
Tx-/ B
Tx+ / A
Tx- / B
Rx+
Rx-
GND
RS485 / RS422
connector
ADA-4028LA
Current Loop
connector
Fig. 4. The 2-wire connection of ADA-4028L to PC by the use of USB to RS485/RS422 converter ADA-I9140/ADA-I9141
3.3. CONNECTION TO RS485/422 BUS
The RS485/RS422 interface at ADA-4028LA converter is available on terminal block described as: Tx+/A, Tx-/B, Rx+, Rx-.
Below are shown connection of ADA-4028LA converter to RS485(4W) bus and RS485(2W) bus.
3.3.1. CONNECTION TO RS485 (4-WIRE) BUS
Fig. 5. Example connection of ADA-4028LA to RS485(4W) 4-wire bus and galvanic separation of SLAVE device
6
ADA-4028LA
Rd
.
CLO+
NC
CLO-
GND
USB
USB
connector
RS485 / RS422
connector
RS485(2W)
USB
connector
PC ADA-I9140
USB
Rx+
Rx-
Tx+/ A
Tx-/ B
Tx+ / A
Tx- / B
Rx+
Rx-
GND
RS485 / RS422
connector
ADA-4028LA
Current Loop
connector
(5) GND
GND
(2) Rx
(3) Tx
RS232
connector DB-
9F/DCE
Screw
connector
RS485 / RS422
RS485(4W) bus
9600Bd/8/O/1
RS232
connector
DB-9M/DTE
PC or
MASTER device
ADA-I1040
GND (5)
Tx (2)
Rx (3)
Rt
Rt
Rx+
Rx-
Tx+/ A
Tx-/ B
CLO
SLAVE
2400Bd/8/N/2
SLAVE
19200/Bd/7/N/2
SLAVE
9600Bd/8/E/1
CLO
CLO
3.3.2. CONNECTION TO RS485 (2-WIRE) BUS
Fig. 6. Example connection of ADA-4028LA to RS485(2W) 2-wire bus and galvanic separation of SLAVE device
3.3.3. GND TERMINALS CONNECTION
Connection of GND terminals of RS485/422 interfaces, devices connected to RS485/422 bus, should be done in the case of a
potential difference of the signals grounds on interfaces RS485 / RS422, which prevents proper data transmission.
Cannot connect to the GND terminal - cables screens, PE circuit of electrical installation, signals grounds of other devices.
3.3.4. LINE TERMINATION
The application of Line Termination (terminator) Rt = 120 ohms will reduce electrical reflection in data line at high baud rate. It is not
needed below 9600Bd. The Line Termination resistor should be used if the distance is over 1000m @ 9600Bd or 700m @ 19200Bd
transmission, the resistor can be necessary if there are problems with the transmission correctness. Example connection of Rt are
shown on Fig. 5 & 6. Resistor Rt = 120 W, 5%, 0.25W of a 2 pc. is complete with the device ADA-4028LA.
3.3.5. CONNECTION OF CURRENT LOOP DEVICES
The connections of SLAVE devices with current loop CLO interface to ADA-4028LA are shown on Fig..5 & Fig..6.
Current Loop CLO interface at ADA-4028LA converter is available on terminal block described as: CLO+, CLO-, Rd.
Rd & CLO+ clamp is used also for connection of additional resistor for sensitivity setting of CLO receiver (see pt. 4.2).
7
ADA-4028LA
(5) GND
GND
(2) Rx
(3) Tx
RS232
connector DB-
9F/DCE
Screw
connector
RS485 / RS422
RS232
connector
DB-9M/DTE
ADA-I1040
GND (5)
Tx (2)
Rx (3)
Rt
Rx+
Rx-
Tx+/ A
Tx-/ B
RS485(4W) bus
9600Bd/8/O/1
PC or
MASTER device
CLO
SLAVE
2400Bd/8/N/2
SLAVE
19200/Bd/7/N/2
SLAVE
9600Bd/8/E/1
CLO
CLO
3.3.5.1. CONNECTION OF DEVICE WITH PASSIVE INTERFACE CLO
Fig. 7. Example connection of device with passive CLO interface eg. energy counter to ADA-4028LA
3.3.5.2. CONNECTION OF DEVICE WITH ACTIVE INTERFACE CLO
Fig. 8. Example connection of device with active CLO interface to ADA-4028LA
8
ADA-4028LA
CLO-
CLO+
Current Loop
connector
V+
V-
Power
adapter
Vss-
Vss+
CLO+
NC
CLO-
GND
Tx+ / A
Tx- / B
Rx+
Rx-
RS485
connector
ADA-4028LA
ACTIVE
Rd
Device with passive CLO
interface
CLO-
CLO+
Device with active CLO
interface
Vss-
Vss+
CLO+
CLO R+
CLO-
GND
Tx+ / A
Tx- / B
Rx+
Rx-
Rd
Power
adapter
ADA-4028LA
PASSIVE
Current Loop
connector
RS485
connector
V+
V-
3.3.5.3. CONNECTION OF 4 DEVICES WITH THE PASSIVE CLO INTERFACE
Fig. 9. Example connection of 4 devices with passive CLO interface eg. energy counters to ADA-4028LA
3.4. POWER SUPPLY
The power supply to ADA-4028LA should be DC (regulated) from the scope 10 V= to 30V= and nominal power more then 2W. The
power cable from DC power supplies to the device must not be longer than 3m. Observe the polarity, connect positive (+) of DC power
supplies to V+ and negative (-) end to V- terminal. The ADA-4028LA has the protection from opposite connection power supply.
If after power, on the front panel is not lit green LED PWR, check the power connection (polarity).
4. ACTIVATION
Converter can be powered after proper connection according to steps above.
If connection was made properly green LED PWR on front panel of converter should light, if not check polarization of power
connection and if RX LED is lighted check connection correctness of Current Loop CLO transmitter circuit. Lighting this LED indicates
non flow of current through optocoupler in receiver circuit.
During correctness data transition via the converter the LEDs Tx and Rx should blinking.
4.1. SIGNALING LEDS
LED Description
PWR Signalling of Power Supply
Standard mode
RX Signalling of data receiving through the ADA-4028LA converter from Current Loop CLO port
TX Signalling of data transmitting from the ADA-4028LA converter through Current Loop CLO port
Configuration mode
LED by SW1 Blink with frequency 1 Hz - signalling of configuration mode (see micro-switch SW1 setting)
Firmware update mode
LED by SW1 Blinking signalling the software data flows to converter.
4.2. SENSITIVITY SETTING OF CURRENT LOOP CLO RECEIVER
Devices with a passive interface CLO may have different current values in the logical zero state, therefore should be set the converter
receiver sensitivity. Wrong adjustment of receiver sensitivity is revealed by not lit of RX LED during data receiving from connected
devices (eg. energy counter) despite the correct connections to converter. The sensitivity is set by adding additional resistor to Rd and
CLO+ screw terminal block. If the resistor is correct RX LED will be blinking during data receiving. ADA-4028LA converter is supplied
with resistors Rd = 220W / 0,25W and 120W / 0,25W.
9
ADA-4028LA
CLO-
CLO+
V+
V-
Vss-
Vss+
CLO+
NC
Rd
CLO-
GND
Tx+ / A
Tx- / B
Rx+
Rx-
CLO-
CLO+
CLO-
CLO+
CLO-
CLO+
Current Loop
connector
Power
adapter
RS485
connector
ADA-4028LA
ACTIVE
Device no.1
passive CLO
interface
Device no.2
passive CLO
interface
Device no.3
passive CLO
interface
Device no.4
passive CLO
interface
5. CONFIGURATION
5.1. OPERATION MODE
ADA-4028LA converter can operates in a few modes :
– run,
– configuration,
– factory default,
– emergency firmware update
Those modes can be set by use SW1 located by terminal block RS455/RS422. To set the switch section, should remove terminal
cover marked as SW1 and make the appropriate settings by the use a small, flat screwdriver.
All available adjusting the SW1 switch are shown in table below.
Operation modes
SW1- 1 SW1- 2 Mode
OFF OFF Run
ON OFF Configuration
OFF ON
Factory default
Turning OFF and ON the power of the converter, the configuration will be set
to factory default.
ON ON Emergency Firmware Update
5.2. CONFIGURATION BY THE USE OF ADACONFIG
The configuration of ADA-4040A converter should be done by use of ADAConfig software - selling with converter.
To make the configuration, connect converter to computer (see pt. 3.2) and power supply. If after power, on the front panel is not lit
green LED PWR, check the power connection (polarity). If the PWR LED lights, set the section of SW1 switch to configuration mode
as in table below.
SW1-1 SW1-2
ON OFF
In the configuration mode the yellow LED located by SW1 micro-switch will blink with frequency 1 Hz. Start the ADAConfig software
and make the configuration of transmission parameters for each interfaces and set his visible address from RS485 bus. Firstly should
be set a number of COM port for communication with the converter, then readout the configuration from converter's memory using the
button [Read converter configuration] and make the proper changes of interfaces setting.
5.2.1. CONFIGURATION OF ADDRESSING MODE
If the option Converter Address will be enabled, on configuration window should be set a proper converter address from range 1 - 255.
If this option is disabled the converter will operate as baud rate converter.
5.2.2. CONFIGURATION OF BAUD RATE AND DATA FORMAT
In both operating modes (addressing / baud rate converter), is possible to set additional transmission parameters for RS485/422 &
Current Loo CLO interfaces separately.
For RS485/RS422 interface:
– baud rate (kbps): 0.3, 0.6, 1.2, 1.8, 2.4, 4.8, 7.2, 9.6, 14.4, 19.2, 28.8, 38.4, 57.6, 76.8, 115.2, 230.4,
– number of data bites: 5, 6, 7, 8,
– control parity: no control, parity control, control of none parity,
– number of stop bits : 1, 2,
– frame spacing – range from 4 to 255 (silence time as frame's end),
For Current Loo CLO interface:
– baud rate (kbps): 0.3, 0.6, 1.2, 1.8, 2.4, 4.8, 7.2, 9.6, 14.4, 19.2,
– number of data bites: 5, 6, 7, 8,
– control parity: no control, parity control, control of none parity,
– number of stop bits : 1, 2,
– frame spacing – range from 4 to 255 (silence time as frame's end),
5.2.3. CONFIGURATION DATA FLOW CONTROL
In the section Data flow control for RS485/RS422 interface, can be set:
– signal DE – Off – RS485/RS422 interface operates only in receiving data mode,
– signal DE – Toggle – RS485 interface operates in receiving & transmitting data mode for RS485 bus 2-wires and 4-wires,
– signal DE – On – RS485/RS422 interface operates in RS422 mode,
After configuration the setting should be saved on converter memory by using button [Write converter configuration].
Return to work in run mode is made by using SW1 switch (yellow LED blink OFF) as below.
SW1-1 SW1-2
OFF OFF
10
ADA-4028LA
Fig. 10. View of ADAConfig software interface
5.3. FIRMWARE UPDATE
Set SW1 micro switch to configuration mode as in table below.
SW1-1 SW1-2
ON OFF
In the configuration mode the yellow LED will blink with frequency 1Hz. Press a button [Load New Firmware] to change the software
delivered by manufacturer. The Select File window will open (Fig.11) and select the *.bin file then click [Open] - software will be load
to ADAConfig buffer storage and will be checked. If the ADAConfig not detect errors in loaded file, change converter software.
Process of updating is visualized by ADAConfig in use Progress Window and after proper changing confirmed by correct message.
11
ADA-4028LA
Fig. 11. Selection of firmware file
During loading software the yellow LED located beside SW1 micro-switch will blink, showing data flow to the converter. If the software
was loaded correctly yellow LED will be blink with frequency 1 Hz.
After that set micro switch SW1 to standard mode as shown in the table below.
SW1-1 SW1-2
OFF OFF
Yellow LED will be OFF
5.4. EMERGENCY FIRMWARE UPDATE
In case of the unsuccessful update of the converter software, try again according to description in point FIRMWARE UPDATE. If the
update is still incorrect use emergency firmware update. Set SW1 microswitch mode as in the table below.
SW1-1 SW1-2
ON ON
After micro-switch setting, should be restarted the ADA-4028LA, by turning OFF and then ON the power supply. The yellow LED will
light continuously and the converter will be in Emergency Firmware Update mode. Now follow the description in point FIRMWARE
UPDATE.
After successful updating, set SW1 micro-switch as in table below. Yellow LED will be OFF.
SW1-1 SW1-2
OFF OFF
5.5. FACTORY DEFAULT
In case of faulty functioning of ADA-4028LA, like:
- no communication in the configuration mode,
- transmission errors on RS485/422 bus,
can be restored the factory default setting of the converter internal registers.
Factory default
Parameter
RS485/RS422
interface
Current Loop CLO
interface
Converter address - Enable unset
Converter address – Address no active
Baud rate 9600bps 9600bps
Data bits 8 8
Parity Non Non
Stop bits 1 1
Interval between frames in bytes 4 4
Data flow control DE-TOGGLE ------
12
ADA-4028LA
Set SW1 microswitch mode as in the table below.
SW1-1 SW1-2
OFF ON
Disconnect the power and after while connect again the power. After that, will be loaded the factory default setting to the converter
internal registers.
Set micro switch SW1 to run mode (Yellow LED will be OFF) as shown in the table below.
SW1-1 SW1-2
OFF OFF
5.6. DATA TRANSMISSION DIAGNOSTICS
To readout diagnostics should be set SW1 microswitch to the configuration mode (see pt. OPERATION MODE).
Correctness of transmission proceed on Current Loop interface and RS485/422 interface can be checked by readout the errors list by
ADAConfig Software form the converter memory. Frames error counter will be increased, in case of: improper speed set compared to
real speed of data transmission. Parity error counter will be count the errors which can arise in case of misrepresent bytes in
transmitted sign. This counter will not works in case of disable control parity. To check those counters press the button [Read
transmission errors], and to delete (zeroing of counters in the memory of the converter) press [Delete transmission errors].
In case of parity errors or frame errors, should be checked the ADA-4028LA converter's configuration and correctness connection of
RS485 bus and Current Loop device to the converter ports.
After finishing the diagnostics, the SW1 micro-switch should be set to standard mode as shown in the table below
SW1-1 SW1-2
OFF OFF
Yellow LED will be OFF
6. OPERATION
The ADA-4028LA converter can operate in to two modes: not addressable and addressable.
6.1. OPERATION IN NON ADDRESSABLE MODE
In this mode the ADA-4028LA operates as baud rate converter and data format converter and lets to set different baud rates and data
format on Current Loop CLO & RS485/422 interfaces.
It lets connect to RS485 network old devices operate with non-configure baud rate and data format, on which operate devices with
different baud rate or data format.
6.2. OPERATION IN ADDRESSABLE MODE
In this mode ADA-4028LA operate as baud rate converter and data format converter and lets to connect no addressable devices with
Current Loop CLO interface, transmitting data at different rates and formats of data frame to the RS485 bus, in the process of enabling
the cooperation with addressable devices.
Example connection of ADA-4028LA is shown on fig. 12.
On RS485 bus the frame of protocol for no addressable devices connected to Current Loop CLO port of ADA- 4028LA should be
created in the following way:
ADDRESS ADA-4028LA FRAME OF NO ADDRESSABLE DEVICES
Where:
ADDRESS ADA-4028LA - one byte of address from 1-255 scope, - set in the memory of ADA-4028LA
during configuration in use of ADAConfig,
FRAME OF NO ADDRESSABLE DEVICES - free sequence of bytes containing the appropriate frame of device, connected
to Current Loop CLO port. Not longer than 950 bytes.
ADA-4028LA converter with set up addressing is listening constantly to frame on RS485 bus via RS485/422 port. If received frame
contains byte of address equal to address of converter, then another bytes of frame are received, right up to silence on RS-485 bus
equal to 'space between frames in signs'. If the frame is received correctly, the address byte is deleted and transmitted over as typical
to the Current Loop CLO port. In case of errors in received frame, it isn't transmitted to the Current Loop CLO. In this case should be
send the previous frame one more.
The frame received from device connected to Current Loop CLO port is being tested of transmission errors and in case of their
missing the converter adds address to the beginning of frame and send it to RS485/422 bus through RS485/RS422 port. Frame
containing errors isn't being transmitted to RS485/422 port. In case of transmitting of frames containing more than 950 bytes converter
receive only 950 bytes and next are ignored. ADA- 4028LA has equipped with separate buffers for RS485/422 and Current Loop CLO,
therefore converter can operate in full duplex mode on RS-422 and RS-485 4-wire bus.
Additionally, can be set data flow control for RS485/RS422 interface according to pt. CONFIGURATION BY THE USE OF
ADACONFIG.
On a picture below are shown the possibilities of using the addressable ADA-4028LA baud rate converter.
13
ADA-4028LA
Fig.12. Connection of no addressable devices with Current Loop CLO interface to RS485/422 bus
7. CHANGES IN THE SOFTWARE
From CPU 2.0 and software 000.007 versions, was added:
- flow data control by the use of DE signal for RS485/RS422 interfaces. Description of using new option is in pt. CONFIGURATION BY
THE USE OF ADACONFIG,
- converter operating mode factory default is set by the use of SW1 micro-switch, see pt. OPERATING MODE
ATTENTION!!!
THE SOFTWARE IN 0.007 VERSION AND UPPER WILL NOT OPERATE WITH THE CONVERTERS WITH CPU 1.0. VERSION.
IN CASE OF UPDATE THE SOFTWARE TO 0.007 VERSION AND UPPER IN THE CONVERTERS WITH CPU 1.0. VERSION
PLEASE CONTACT TO SERVICE.
8. VERSIONS
ADA-4028LA - -
Order example:
Product Symbol: ADA-4028LA-1-2
1 – 24VDC/0-20mA current loop, active transmitter,
2 – 1kV=, 3-way galvanic isolation.
Current Loop voltage:
24VDC / 0-20mA, active transmitter of Current Loop
1
12VDC / 0-20mA, active transmitter of Current Loop
2
24VDC / 0-30mA, active transmitter of Current Loop
3
12VDC / 0-30mA, active transmitter of Current Loop
4
24VDC / 0-20mA, passive transmitter of Current Loop
1P
12VDC / 0-20mA, passive transmitter of Current Loop
2P
24VDC / 0-30mA, passive transmitter of Current Loop
3P
12VDC / 0-30mA, passive transmitter of Current Loop
4P
3-way Galvanic isolation:
1kV=
2
3kV=
3
14
ADA-4028LA
RS-485 bus
2-wire or
4-wire
Addressable
Device
RS-485
Specifications of RS-485 bus :
- baud rate 19200 bps,
- 8 data bits,
- no parity,
- 2 stop bits.
- baud rate 1200bps,
- 8 data bits,
- no parity,
- 1 stop bit.
CL
Device
ADA-4028LA
Address 2
CL
Current Loop
CL
Device
ADA-4028LA
Address 2
CL
Current Loop
CL
Device
ADA-4028LA
Address 2
ADA-1040
RS-232
9. SPECIFICATION
TECHNICAL DATA
Transmission Parameters
Interface RS-485/RS-422 Current Loop
Connector Screw terminal, wire max. Ø 2,5mm
2
Screw terminal, wire max. Ø 2,5mm
2
Line length
Up to 1200 m Depends on baud rate up to 1000 meters
Maximum number of connected device Up to 32 1
Maximum baud rate
230,4 kbps 19,2 kbps
Transmission line
Twisted cable 1-pair or 2-pair , UTP
Nx2x0,5 (24AWG), shield inside large
interferences STP Nx2x0,5(24AWG).
2-pair twisted cable, UTP Nx2x0,5
(24AWG), shield inside large
interferences STP Nx2x0,5(24AWG).
Transmission type
Asynchronism full duplex, half duplex.
Standards EIA-232, CCITT V.24, EIA-485, CCITT V.11
Optical signalisation
• PWR – green LED power supply,
• RX - red LED data receiving from Current Loop,
• TX - yellow LED data transmission through Current Loop CLO.
Electrical Parameters
Power requirements
10 - 24 – 30 V DC
Power Cable Recommended length of power cable – up to 3m
Power
2W
Protection from reverse power polarization YES
Galvanic Isolation
1kV= or 3kV= DC between power circuit and RS485/422 signal line
Optoisolation 3kV= between signal line RS-485/422 and Current Loop
Electromagnetic compatibility
Resistance to disruptions according to the standard PN-EN 55024.
Emission of disruptions according to the standard PN-EN 55022.
Safety requiring
According to the PN-EN60950 norm.
Environment Commercial and light industrial.
Environmental Parameters
Operating temperature
-30 ÷ 60°C
Humidity 5 ÷ 95% - non-condensing
Storage temperature
-40 ÷ 70 °C
Casing
Dimensions 53mm x 90mm x 62 mm
Material
Noryl UL. 94 V-O
Degree of casing protection IP40
Degree of terminal protection
IP20
Weight 0,10 kg
According to standard
DIN EN50022, DIN EN43880
Position during operation Free
Mounting
Rail mounting according to DIN35 standard / TS35.
15
ADA-4028LA
16
ADA-4028LA
Dear Customer,
Thank you for purchasing CEL-MAR Company products.
We hope that this user manual helped connect and start up the ADA-4028LA converter. We also wish to inform you that we are a
manufacturer of the widest selections of data communications products in the world such as: data transmission converters with
interface RS232, RS485, RS422, USB, Current Loop, Fibre-Optic Converters and Ethernet or Wi-Fi.
Please contact us to tell how you like our products and how we can satisfy you present and future expectation.
CEL-MAR sp.j.
Zakład Informatyki i Elektroniki
str. Ściegiennego 219C
25-116 Kielce, POLAND
Tel....................................................: +48 41 362-12-46
Tel/fax.............................................. : +48 41 361-07-70
Web................................................. : http://www.cel-mar.pl/en
Office............................................... : office@cel-mar.pl
Sales department........................... .: handlowy@cel-mar.pl
Technical information ..................... : support@cel-mar.pl
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