Helmholz PN/ModbusTCP Coupler Manuale utente
Quick Start Guide PN/ModbusTCP Coupler
Version
2en
as of FW 1.00
www.helmholz.com
Quick Start Guide PN/ModbusTCP Coupler2
Contents
1. Safety instructions 3
2. Introduction 4
3. Function of the PN/ModbusTCP Coupler 4
4. Connection 5
5. Install GSDML le 5
6. Concept of data exchange 6
7. Supported ModbusTCP function codes 8
8. Conguration in the TIA portal 9
9. Parameters of the PN/ModbusTCP Coupler 10
10. Assign a PROFINET device name to the PN/ModbusTCP Coupler 11
11. Web interface of the PN/ModbusTCP Coupler 12
12. MQTT Publisher 14
13. Firmware update & reset to factory settings 16
14. PN/ModbusTCP status and control via the PLC 17
15. LED status information 18
16. Technical data 19
BT-beipack-134
Quick Start Guide PN/ModbusTCP Coupler 3
1. Safety instructions
Target audience
This description is only intended for trained personnel qualied in control and auto-
mation engineering who are familiar with the applicable national standards.
For installation, commissioning, and operation of the components, compliance with the
instructions and explanations in this operating manual is essential. The specialist person-
nel is to ensure that the application or the use of the products described fullls all safety
requirements, including all applicable laws, regulations, provisions, and standards.
Intended use
The device has a protection rating of IP 20 (open type) and must be installed in an elec-
trical operating room or a control box/cabinet in order to protect it against environmen-
tal inuences. To prevent unauthorized operation, the doors of control boxes/cabinets
must be closed and possibly locked during operation.
The consequences of improper use may include personal injury to the user or third par-
ties, as well as property damage to the control system, the product, or the environment.
Use the device only as intended!
Operation
Successful and safe operation of the device requires proper transport, storage, setup,
assembly, installation, commissioning, operation, and maintenance.
Operate the device only in awless condition. The permissible operating conditions and
performance limits (technical data) must be adhered to.
Retrots, changes, or modications to the device are strictly forbidden.
Quick Start Guide PN/ModbusTCP Coupler4
Application example: 1
Machine 1 Machine 2
TCP
Server
2. Introduction
This document explains the initial commissioning of the PN/ModbusTCP Coupler.
You can nd the most current version of the documentation under www.helmholz.
de or scan the QR code directly.
3. Function of the PN/ModbusTCP Coupler
Simple and uncomplicated connection of a PROFINET network with a ModbusTCP
network is possible with the PN/ModbusTCP Coupler.
The PN/ModbusTCP Coupler enables data transmission between a
PROFINET controller and ModbusTCP participants.
Received input data on one of the network sides is made available as output data to
the other network side. The IO data transfer takes place live and as quickly as pos-
sible without additional handling blocks.
The maximum size of the transmitted data is 1024bytes of input/output data. Up to
300slots for IO modules are available.
The integration into the PLC engineering tool is made possible by a GSDML le;
special conguration software isn’t necessary.
In addition to the PROFINET / ModbusTCP communication, the PN/ModbusTCP
Coupler also makes an MQTT Publisher available on both network sides.
In this way, the values exchanged via the gateway can also be distributed via MQTT
to visualization or operating data recording systems.
SCAN
QR CODE
TO GET
MANUAL
PN/ModbusTCP Coupler
documentation
Quick Start Guide PN/ModbusTCP Coupler 5
4. Connection
The left RJ45 sockets “X1 P1” and “X1 P2” are for the connection of the PROFINET
network; the right RJ45 sockets “X2 P1” and “X2 P2” are for the connection of the
ModbusTCP network.
The PN/ModbusTCP Coupler must be supplied with 24 V DC at the wide range input
18 ... 30 V via the provided connector. The power supply is designed redundantly. At
least a supply path PS 1 or PS 2 must be connected.
5. Install GSDML le
Please download t
he GSDML le
(“GSDML-V2.34-Helmholz-PN-ModbusTCP-cou-
pler-______.xml”) under www.helmholz.de or scan the QR code.
Install the le in the engineering tool so that the PN/ModbusTCP Coupler is available
for conguration.
Note: The housing of the PN/ModbusTCP Coupler is not grounded. Please connect the
functional grounding connection (FG) of the PN/ModbusTCP coupler correctly with the
reference potential.
Port 1, port 2
PROFINET connection
Operation LEDs (see page 10)
X2 P1, P2
ModbusTCP network
Redundant power supply
PS 1/PS 2
MAC address of the
PROFINET connection
MAC address
ModbusTCP network
PN/ModbusTCP Coupler
GSDML le
SCAN
QR CODE
TO GET
GSDML
Quick Start Guide PN/ModbusTCP Coupler6
TCP
ModbusTCP
Clients
Discrete Inputs: 65536 Bits
(8 Kbyte)
Discrete Input 0 – 65535
Coils: 65536 Bits
(8 Kbyte)
Coils 0 – 65535
Input Register:
65535 Words
(128 Kbyte)
Register 0 – 65535
Holding Register:
65535 Words
(128 Kbyte)
Register 0 – 65535
In the PN/ModbusTCP Coupler, all coils, inputs and registers are always present from
the perspective of the ModbusTCP communication. It is thus always possible to ac-
cess all data types from address 0-65535.
With the PROFINET conguration, that data can be assigned in the slots of the PN/
ModbusTCP Coupler to the PLC-IO image that is to be accessed in the PLC program.
Up to 300 slots are available for such assignments in the PN/ModbusTCP Coupler
ModbusTCP differentiates between 4 different data types:
1. Discrete Inputs: Input bits; written by the PROFINET PLC
2. Coils: Output bits or internal data bits; read by the PROFINET PLC,
but can also be written
3. Input Register: Input word; written by the PROFINET PLC
4. Holding Register: Output word or internal data word; read by the PROFINET PLC,
but can also be written
6. Concept of data exchange
The PN/ModbusTCP Coupler is a ModbusTCP server. It receives data via ModbusTCP, which is then transmitted to the IO image of the PROFINET PLC
(inputs in the PLC) and makes data available as transmission data, which it receives from the PROFINET PLC (outputs in the PLC).
All data types are enumerated from 0-65535. All data types have their own storage area in the PN/ModbusTCP Coupler.
Quick Start Guide PN/ModbusTCP Coupler 7
TCP
ModbusTCP
Clients
Discrete inputs: 65536 Bits
(8 Kbyte)
Discrete Input 0 – 65535
Coils: 65536 Bits
(8 Kbyte)
Coils 0 – 65535
Input Register:
65536 Words
(128 Kbyte)
Register 0 – 65535
Holding Register:
65536 Words
(128 Kbyte)
Register 0 – 65535
Slot 1
Slot 2
Slot 3
Slot 4
Slot 5
Slot 6
...
• Discrete Input 1 Byte
• Address 10...17 (8 Bits)
• PLC: 1 Output Byte (QB 100)
• Read Coils, 2 Bytes
• Address 100..115
• PLC: 2 Input Bytes (ID 110)
• Write Coils, 4 Bytes
• Address 20..51
• PLC: 4 Output Bytes (QD 110)
• Write Input register (16 Bit)
• Address 10
• PLC: 1 Output word (1 QW)
• Read Holding register (16 Bit)
• Address 80
• PLC: 1 Input word (1 IW)
• Write Holding register (16 Bit)
• Address 60
• PLC: 1 Output word (1 QW)
The following modules are available for access to the ModbusTCP storage:
Discrete Inputs (only writing):
• Write Discrete Inputs 1 Byte (8 bits)
• Write Discrete Inputs 2 Byte (16 bits)
• Write Discrete Inputs 4 Byte (32 bits)
• Write Discrete Inputs 8 Byte (64 bits)
• Write Discrete Inputs 16 Byte (128 bits)
• Write Discrete Inputs 32 Byte (256 bits)
Coils (read/write):
• Write Coils 1 Byte (8 bits)
• Write Coils 2 Byte (16 bits)
• Write Coils 4 Byte (32 bits)
• Write Coils 8 Byte (64 bits)
• Write Coils 16 Byte (128 bits)
• Read Coils 1 Byte (8 bits)
• Read Coils 2 Byte (16 bits)
• Read Coils 4 Byte (32 bits)
• Read Coils 8 Byte (64 bits)
• Read Coils 16 Byte (128 bits)
Input Register (only writing):
• Write Input Register (16 bits)
Holding Registers (read/write):
• Write Holding Register (16 bits)
• Read Input Register (16 bits)
All modules have the register numbers (Input Register, Holding Register)
or the rst bit address (Discrete Inputs, Coils) as parameter.
Example of a conguration:
Quick Start Guide PN/ModbusTCP Coupler8
7. Supported ModbusTCP function codes
The PN/ModbusTCP Coupler supports the following function codes:
Data size Data range Function Function code
decimal
Function code
hex
Bit access
Input bits Read discrete inputs 2 0x02
Output bits or
internal bits
Read coils 1 0x01
Write single coil 5 0x05
Write multiple coils 15 0x0F
16 bit
access
Input data Read input register 4 0x04
Output data or
internal information
Read holding register 3 0x03
Write single holding register 6 0x06
Write multiple Register 16 0x10
Read/write multiple holding registers 23 0x17
Mask write holding register 22 0x16
Quick Start Guide PN/ModbusTCP Coupler 9
8. Conguration in the TIA portal
The PN/ModbusTCP Coupler can be found in the hardware catalog under “Other eld
devices / PROFINET IO / Gateway / Helmholz GmbH & Co. KG / Helmholz PN/Mod-
busTCP Coupler”.
The PN/ModbusTCP Coupler can be completely congured via the GSDML le in the
PROFINET congurator. An additional conguration software is not necessary. The
ModbusTCP network settings can also be made through the website if needed.
Provide the PN/ModbusTCP Coupler with a PROFINET name under “General”. Con-
nect the PROFINET network of the PROFINET controller with the PN/ModbusTCP
Coupler.
Now insert the desired modules for discrete inputs, coils, input registers or holding
registers into the slots.
All modules have the register number (input register, holding register) or the
rst bit address (discrete inputs, coils) as parameter. In the case of the input bits and
coils, these can be addressed together in one slot from 8 bits (1 Byte) to 256 bits (32
Bytes). Addressing of individual bits is not possible via the PROFINET PLC; the smallest
unit is one byte.
Quick Start Guide PN/ModbusTCP Coupler10
ModbusTCP Denition of the IP address for the ModbusTCP network.
IP address mode:
“DHCP”, “Static IP”, “use IP from webpage setting”
Static IP address:
The static IP address can be indicated here when the address
mode has been set to “Static IP”.
Static IP subnet mask:
The subnet mask can be indicated here when the address
mode has been set to “Static IP”.
DHCP host name mode:
Adopt from the PROFINET conguration or from the web page
DHCP host name:
DHCP name of the device
ModbusTCP port:
Port to which the ModbusTCP driver listens. Port 502
is always active, even when another port has been set here.
ModbusTCP connection Time in which a connection is closed when
monitoring (ms): communication no longer takes place via this connection.
Range: 1–65535 ms
Maximum number of
Number of participants that can establish connections
ModbusTCP connections: with the PN/ModbusTCP coupler simultaneously.
Register for PROFINET status: Number of the register from which the status of the
PN/ModbusTCP coupler can be read out via ModbusTCP.
Range 0-65535
Status of website: On which network interfaces should the website be
displayed.
MQTT Publisher option:
On which network interfaces should the MQTT Publisher
be activated.
9. Parameters of the PN/ModbusTCP Coupler
The conguration of the PN/ModbusTCP Coupler can take place completely through the PROFINET hardware congurator. However, several parameters can also be optionally
set via the website, e.g. the IP address of the ModbusTCP server, the DHCP host name.
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