NOVUS DigiGate Profibus User Manual
DigiGate Profibus
INSTRUCTIONS MANUAL - V1.0x B
INTRODUCTION
DigiGate Profibus is the ideal equipment for interconnecting a Profibus DP network with a Modbus RTU network. It
Works as a gateway, operating as a master station in the Modbus network and as a slave station in the Profibus network.
Thus, according to its previous configuration, DigiGate will read the data of the other devices (slaves) of the Modbus
network and send the read values to the Profibus master. In the same way, it will write at the output of the Modbus
slaves according to the Profibus master requests, providing a complete control of the Modbus network devices through
the Profibus network.
The data interchange is performed through internal memory tables of the device, which are shared between the Profibus
side and the Modbus side. This data interchange mode is very simple, since the Profibus control system will only need
reading the data from the reading table, which is continuously fed and updated through the reading operation performed
by the Modbus. In the same way, the Profibus will write the data in the writing table so that the Modbus can forward the
new values to the correct registers of the corresponding slaves.
The device is totally configurable through the application DigiConfig for Windows®, which comes with the product,
making access and change of its parameters really easy.
This manual will present the instructions necessary for installation and connection of the module. The installer for the
DigiConfig is contained in the CD which comes with the product. The installer program can also be found at the
manufacturer’s homepage for download.
SPECIFICATIONS
General:
● Operating environment: 0 to 50 °C, 30 to 80 % of relative humidity, without condensation.
● Mounting: DIN 35 mm rail.
● Electrical insulation between Profibus output and the rest of the device: 1000 Vac.
● Power supply: 10 to 35 Vdc / 100 mA maximum. Internal protection against inverse polarity.
● Front lit indicators for communication and status.
● The CFG key at the front panel will set the device into “Configuration mode” (Modbus slave: address 246, baud
rate 1200, even parity, 1 stop bit), able to be detected and configured through the DigiConfig software.
● Configuration software in Windows environment: DigiConfig.
● Electromagnetic compatibi lity : EN 61326:200 0.
● Mounting: DIN 35 mm rail.
Profibus:
● Protocol: Profibus DP.
● Operates at the entire range of communication rates, from 9600 bps to 12 Mbps.
● Addressing range: 0 to 125.
● Automatic detection of supported baud rate.
● “.GSD” file included.
● Termination and polarization resistors included (activated by jumper).
● Profibus connection: Terminals for wires, comes with an adapter for DB9.
NOVUS AUTOMATION 1/11
Modbus:
● Operates from 1200 bps to 115200 bps.
● Termination and polarization resistors included (act iv ated by jumper) .
● Protection at the bus: ±60 Vdc, 15 kV ESD.
● Commands available for data reading:
● “01 – Read Coil Status”
● “02 – Read Input Status”
● “03 – Read Holding Register”
● “04 – Read Input Register”
● Commands available for data wr iting:
● “05 – Force Single Coil”
● “06 – Preset Single Register”
● “15 – Force Multiple Coils”
● “16 – Preset Multiple Registers”
Measures: Fig. 1 shows the dimensions of the device.
DigiGate Profibus
Fig. 1 – Dimensions
NOVUS AUTOMATION 2/11
DigiGate Profibus
. If the positive
conductor of the power source is fastened, even momentarily, at any of the other terminals, the
ELECTRICAL INSTALLATION
Recommendations for installation
• When mounting the device on the DIN rail be sure to let a space of approx. 1 cm between the adjacent devices, in order
to allow heat dissipation and avoid overheating of the product.
• Input and communication signal conductors must go through the system base separated from electrical network
conductors, if possible, in grounded conduit s.
• The power supply for the instruments must be provided from a network appropriate for instrumentation.
• In control and monitoring applications it is essential to consider what may occur in case of failure of any part of the
system.
• It is recommended using RC FILTERS (47 Ω and 100 nF, series) in parallel with contactor and solenoid coils which
are next to or connected to the DigiGate.
Electrical Connections
Fig. 2 shows the necessary electrical connections. The terminals 1, 2, 3, 7, 8 and 9 are intended for the Profibus network
connections (being mandatory only the connections at the terminals 7 and 8), 5 and 6 are for the power supply of the
module, while 10, 11 and 12 are intended for communication with the Modbus network. For obtaining better electrical
contact to the connectors, it is recommended using pin shape terminals at the end of the conductors. For direct wire
connection the recommended minimum gauge is 0.14 mm², not exceeding 4.00 mm².
Attention when connecting the power supply terminals to the DigiGate
device may be damaged.
Fig. 2 – Electrical connecti ons
NOVUS AUTOMATION 3/11
DigiGate Profibus
DB9 Adapter
The product comes with a DB9 adapter which can be optionally connected at the indicated pins, making the DigiGate
connection available in the way recommended by the Profibus DP standard (refer to Fig. 3 and Table 1).
Fig. 3 – DB9 Adapter
Pin Signal Description
1 - 2 - 3 B / D1 / D+ / D Tx/Rx data - positive (RS485)
4 RTS Request to send
5 GND Profibus bus grounding (insulated)
6 +5V +5 Vdc of the Profibus bus (insulated)
7 - 8 A / D0 / D- / D\ Tx/Rx data - negative (RS485)
9 - -
Table 1 – Pin assignment of the DB9 adapter
CONFIGURATION
The DigiGate device is configurable through the DigiConfig via Modbus interface. For this purpose, the device must be
set into the “Configuration mode“. In this mode, the device does not work as a master in the Modbus network, but starts
operating as a slave, receiving commands from the configuration software, which will assume the master function during
the configuration procedure. For entering the “Configuration mode“, press the CFG key, make sure that the status LED
starts flashing slowly (once per second, approximately).
For leaving the “Configuration mode“, press the CFG key again. At this moment, the device will be reset and will then
start operating with the new configuration applied.
Configuration software The DigiConfig application is a program for Windows® used for configuration of all operation parameters of the
DigiGate. For installing the application, run the DigiConfigSetup.exe file from the product CD and follow the given
instructions.
DigiConfig contains a complete help file, providing all the information necessary for its full use. For consulting the help
file, start the application and select the “Help” menu or press the F1 key.
If you do not have the CD which comes with the product, consult the manufacturer’s homepage in order to obtain the
DigiConfig installer as well as the additional manuals of the product.
NOVUS AUTOMATION 4/11
Loading...