LUMEL RS-485 Interface Converter Instruction Manual
- June 10, 2024
- LUMEL
Table of Contents
interface converter USB/ RS-485
PD10
User’s manual
APPLICATION
The PD10 converter is a device which transmits data from the USB interface to
the RS-485 industrial interface. USB interface, as the first, is destined to
communicate with the device having a USB Host port, which is the most
frequently a PC computer.
The RS-485 interface, as the second, is destined to communicate with devices
in the object side. The maximal baud rate is 1 Mb/s. This baud rate depends on
the RS-485 cable length. The converter does not interfere in the structure of
transmitted data and is compatible with several industrial communication
protocols, e.g. Modbus RTU, Modbus ASCII, a.s.l. In order to protect devices
at both sides of interfaces, a galvanic separation is applied.
CONVERTER SET
The PD10 converter set includes:
| PD10 converter | 1 pc |
|---|---|
| User’s manual | 1 pc |
| USB cable of 1.8 m long | 1 pc |
CONVERTER INSTALLATION
3.1 Converter installation and operational safety
The converter is a portable device supplied from the USB bus. Dimensions of
the converter are presented on the fig.1.
In the safety service scope, the PD10 converter meets to requirements of the
EN 61010-1 standard.
Observations concerning the operational safety
- All operations concerning transport, installation, and commissioning as well as maintenance, must be carried out by qualified, skilled personnel, and national regulations for the prevention of accidents must be observed.
- Before switching converter on, one must check the correctness of connection to the network.
- Do not connect the converter to the network through an autotransformer.
- Before removing the converter housing, one must switch the supply off and disconnect measuring circuits.
- The removal of the meter housing during the guarantee contract period may cause its cancellation.
- The PD10 converter is destined to be installed and used in industrial electromagnetic environment conditions.
- One must remember that in the building installation a switch or a circuit-breaker should be installed. This switch should be located near the device, easy accessible by the operator, and suitably marked.
3.2. Description of converter leads
Markings of individual leads are shown on the fig. 2
External signals must be connected acc. to tables 1 and 2, in which the
assignment of individual PD10 converter leads are described.
There are two diodes on the frontal plate:
Green (RxD) – signals the reception of data via RS-485.
Yellow (TxD) – signals the transmission of data via RS-485.
RS-485 interface leads
Table 1
| Nr of the RS-485 pin | RS-485 signals |
|---|---|
| (5) V+ | Line +5 V (for terminator) |
| (4) A | Line A |
| (3) B | Line B |
| (2) GND | Line GND |
| (1) GND | Line GND |
USB interface leads
Table 2
| Nr of USB pin (type B) | USB signal |
|---|---|
| 1 | +5 V d.c. |
| 2 | -Data |
| 3 | +Data |
| 4 | GND |
3.3. Installation of the COM port for Windows
The PD10 converter makes use of FTDIBUS Driver and FTDIPORT Driver, licensed
by the Future Technology Devices International Ltd company. This software
creates in the system a device of Universal Serial Bus – The Converter USB-
RS485 of PD10 type and connected to it, the virtual COM port, named USB-RS485
Converter Port Com of PD10 type. The controller installation in the Windows
system causes the addition of a successive COM serial port to the list of
ports serviced by the operating system.
3.4. Installation of COM port controllers on the computer
After connecting the connector to the USB port, the operating system informs
about the appearance of a new device by means of a message presented on the
fig. 4.
The creator to find the new hardware of the Universal Serial Bus. Follow the
wizard’s suggestions, selecting the installation from the indicated location
and providing the path to the drivers previously downloaded from the website
www.lumel.com.pl/en.
https://www.lumel.com.pl/en/catalogue/files?search%5Bcategories%5D%5B%5D=26&search%5Bterm%5D=PD10
Controllers are compatible with systems: Windows 2000, Windows XP, Windows
Vista, Windows Server 2003 (x86 and x64).
When installing controllers, information about the lack of controller digital
signature can occur. One must ignore this information and further continue the
installation.
After the creator closure, the system immediately detects the next device – USB Serial Port (fig. 4). The creator to find new hardware will be started again.
After a
successful termination of the installation, the system informs about the
installation of the new hardware (fig.5) In the Device Manager, two new
devices appear:
– Converter USB—RS485 of P10 type and Port COM named: Converter USB-RS485 of
PD10 type, acc. the fig. 6.
OPERATION DESCRIPTION
The RS-485 standard enables the data exchange of half duplex type. That means
that they can be in the same time transmitted or received. PD10 converters can
work with a maximal baud rate up to 1 Mb/s depending on the line length (e.g.
9600 kb/s on lines up to 1000 m long, 1 Mb/s on lines up to 10 m long). At
lines over 800 m, between lines A and B of the RS-485 interface, one must use
terminators (resistors) on ends of the bus. The terminator value should be
adapted to the application.
In the environment with unknown interference level it is recommended to
observe following principles:
-
Connections of communication interface circuits must be conducted individually by twisted wires in a screen.
-
Apply the general principle that wires (group of wires) leading different signals should be led in the possible farthest distance between them (not less than 50 cm) and
the crossing of such group of wires should be made at right angle. -
The device does not fulfil requirements concerning the electromagnetic compatibility in residential environment
TECHNICAL DATA
Transmission data
| – baud rate | up to 1000 kb/s, depending on the line length |
|---|---|
| – data flow direction control | automatic |
| – controllers | Windows 2000, XP, |
Server 2003, Vista,
Server 2008 (x86 and x64).
Converter power consumption| ≤ 1,5 W
Rated operation conditions:
– supply voltage| 5 V d.c., from the USB port
– ambient temperature| 0…55°C
– relative humidity| < 85%
– working position| any
Storage and transport conditions:
– ambient temperature| 0…70°C
– relative humidity| < 85%
Ensured protection grades (EN 60529):
– from the housing side| IP 40
– from the terminal side| IP 20
Dimensions| 52 ´ 44 ´ 24 mm
Weight| 0,1 kg
Electromagnetic compatibility:
– immunity| EN 61000-6-2
– emission| EN 61000-6-4
Maximal working voltage in relation to earth:| < 50 V
ORDERING CODE
| Code | Description |
|---|---|
| PD10 00M0 | Interface converter USB/ RS-485; documentation and descriptions in |
Polish and English version, test certificate
Technical support:
tel.: (+48 68) 45 75 143, 45 75 141, 45 75 144, 45 75 140
e-mail: export@lumel.com.pl
Export department:
tel.: (+48 68) 45 75 130, 45 75 131, 45 75 132
e-mail: export@lumel.com.pl
Calibration & Attestation:
e-mail: laboratorium@lumel.com.pl
PD10-07B, PD10-09B_R1
60-006-00-00967
References
- Lumel | Automation devices and systems | SMT/THT assembly | Lumel
- Lumel | Automation devices and systems | SMT/THT assembly | Lumel
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