Seneca Z-KEY-P User manual

ORIGINAL INSTRUCTIONS
USER MANUAL
Z-KEY-P, R-KEY-LT-P, Z-KEY-2ETH-P
PROFINET IO / MODBUS RTU-TCP GATEWAYS
SENECA S.r.l.
Via Austria 26 –35127 –Z.I. - PADOVA (PD) - ITALY
Tel. [phone] Fax [phone]
www.seneca.it
Introduction
The content of this documentation refers to products and technologies described in it.
All technical data contained in the document may be changed without notice.
The content of this documentation is subject to periodic review.
To use the product safely and effectively, read the following instructions carefully before use.
The product must be used only for the use for which it was designed and manufactured: any other use is under
the full responsibility of the user.
Installation, programming and set-up are allowed only to authorized, physically and intellectually suitable
operators.
Set-up must be performed only after correct installation and the user must follow all the operations described in
the installation manual carefully.
Seneca is not responsible for failures, breakages and accidents caused by ignorance or failure to apply the
stated requirements.
Seneca is not responsible for any unauthorized modifications.
Seneca reserves the right to modify the device, for any commercial or construction requirement, without the
obligation to promptly update the reference manuals.
No liability for the contents of this document can be accepted.
Use the concepts, examples and other content at your own risk.
There may be errors and inaccuracies in this document that could damage your system, so proceed with caution,
the author(s) will not take responsibility for it.
Technical specifications are subject to change without notice.
CONTACT US
Technical support
[email protected]

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Product information
[email protected]
Document revisions
DATE
REVISION
NOTES
AUTHOR
16/12/2022
0
First revision for new dual core CPU
Aligned with firmware 117 revision
MM
26/04/2023
1
New operating modes introduced with firmware 204 revision
MM
27/04/2023
2
Various fixes
MM
This document is the property of SENECA srl.
Copies and reproduction are prohibited unless authorised.

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TABLE OF CONTENTS
PRELIMINARY WARNINGS.........................................................................................5
DESCRIPTION..........................................................................................................................................................................5
PROFINET IO PROTOCOL......................................................................................................................................................5
PROFINET GATEWAY DEVICES............................................................................................................................................6
ETHERNET PORT........................................................................................................6
FIRMWARE UPDATE...................................................................................................6
OPERATING MODE.....................................................................................................7
PROFINET IO DEVICE / MODBUS MASTER GATEWAY ......................................................................................................7
PROFINET IO DEVICE / MODBUS SLAVE GATEWAY .........................................................................................................7
GATEWAY WITH PORT#1 AND PORT#2 MASTER TAG ......................................................................................................9
STEP-BY-STEP DEVICE CONFIGURATION EXAMPLE USING EASY SETUP 2 AND
TIA PORTAL .......................................................................................................................9
"PROFINET IO - MODBUS MASTER GATEWAY" CONFIGURATION..................................................................................9
"PROFINET IO - MODBUS SLAVE GATEWAY" CONFIGURATION ...................................................................................26
WEBSERVER MODE AND PROFINET MODE..........................................................43
MANUAL PROCEDURE FOR SWITCHING FROM PROFINET MODE TO WEBSERVER MODE AND VICE VERSA ......44
STEP BY STEP GUIDE FOR THE FIRST ACCESS TO THE WEBSERVER .......................................................................44
WEBSERVER DEVICE CONFIGURATION ...........................................................................................................................45
WEBSERVER SECTIONS......................................................................................................................................................46
“STATUS” SECTION..........................................................................................................................................................47
“SETUP” SECTION ............................................................................................................................................................47
SAVING A CONFIGURATION ON A FILE.........................................................................................................................50
IMPORTING A CONFIGURATION FROM A FILE.............................................................................................................50
“COMMANDS/TAGS” SECTION (ONLY FOR PROFINET IO / MODBUS MASTER GATEWAY MODE).........................52
“I/O MAPPING” SECTION..................................................................................................................................................53
"FIRMWARE UPDATE" SECTION.....................................................................................................................................53
“DATABASE UPDATE” SECTION .....................................................................................................................................53
“SERIAL TRAFFIC MONITOR” ..........................................................................................................................................54
SUPPORTED MODBUS COMMUNICATION PROTOCOLS .....................................54
SUPPORTED MODBUS FUNCTION CODES........................................................................................................................54
MODBUS DIAGNOSTICS (ONLY PROFINET IO / MODBUS MASTER GATEWAY
MODE)...............................................................................................................................54
RESETTING THE DEVICE TO ITS FACTORY CONFIGURATION ...........................56

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EXCEL TEMPLATE.................................................................................................56
MODBUS TCP-IP SERVER AND MODBUS PASS-THROUGH.............................57

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PRELIMINARY WARNINGS
ATTENTION!
This user manual extends the information from the installation manual to the configuration of the
device. Use the installation manual for more information.
ATTENTION!
In any case, SENECA s.r.l. or its suppliers will not be responsible for the loss of data/revenue or
consequential or incidental damages due to negligence or bad/improper management of the device,
even if SENECA is well aware of these possible damages.
SENECA, its subsidiaries, affiliates, group companies, suppliers and distributors do not guarantee that
the functions fully meet the customer's expectations or that the device, firmware and software should
have no errors or operate continuously.
DESCRIPTION
The Z-KEY-P, R-KEY-LT-P, Z-KEY-2ETH-P products allow to convert data coming from the Modbus serial bus
or Modbus TCP-IP Ethernet into the Profinet IO bus or vice versa.
PROFINET IO PROTOCOL
PROTOCOL
Type of protocol
Profinet IO, Class A Device, Cyclic Real-time (RT) and Acyclic
Data
MEMORY
Memory size
In Gateway Master and Gateway Slave modes:
512 bytes max in reading and 512 bytes max in writing (20 slots
max)

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PROFINET GATEWAY DEVICES
PRODUCT
ETHERNET
PORTS No.
PORTS No.
RS232/RS485
(CONFIGURABLE)
RS485 PORTS
No.
ISOLATED
SERIAL PORTS
Z-KEY-P
1
1
1
Yes, both ports
R-KEY-LT-P
1
1
NO
NO
Z-KEY-2ETH-P
2
1
1
Yes, both ports
ETHERNET PORT
The factory configuration of the Ethernet port is:
STATIC IP: 192.168.90.101
SUBNET MASK: 255.255.255.0
GATEWAY: 192.168.90.1
Multiple devices must not be inserted on the same network with the same static IP.
ATTENTION!
DO NOT CONNECT 2 OR MORE FACTORY-CONFIGURED DEVICES ON THE SAME NETWORK, OR THE
DEVICE WILL NOT WORK
(CONFLICT OF IP ADDRESSES 192.168.90.101)
FIRMWARE UPDATE
In order to improve, add or optimize the functions of the product, Seneca releases firmware updates on the
device section on the www.seneca.it website
The firmware update is made using the appropriate command on the Easy Setup2 software or the webserver.
ATTENTION!
UPDATING THE FIRMWARE FROM A 1xx TO A 2xx REVISION WILL LOSE THE CONFIGURATION.
ON THE SENECA WEBSITE THERE IS AN EXCEL TEMPLATE THAT IMPORTS A CONFIGURATION OF
THE TAGS CARRIED OUT WITH A 1xx FIRMWARE AND CONVERTS IT IN THE NEW MODE "GATEWAY
PROFINET IO MODBUS MASTER" OF THE 2xx FIRMWARE REVISIONS
FOR MORE INFO REFER TO THE TEMPLATE ITSELF

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ATTENTION!
NOT TO DAMAGE THE DEVICE DO NOT REMOVE THE POWER SUPPLY DURING THE FIRMWARE
UPDATE OPERATION.
OPERATING MODE
The Gateway allows you to operate in 3 different modes:
PROFINET IO DEVICE / MODBUS MASTER GATEWAY
PROFINET IO DEVICE / MODBUS SLAVE GATEWAY
GATEWAY WITH PORT#1 AND PORT#2 MASTER TAG.
PROFINET IO DEVICE / MODBUS MASTER GATEWAY
This operating mode is the most used and allows you to connect a Profinet IO PLC controller with Modbus
RTU/ASCII Slave I/O devices
The Gateway, in the serial part, works as a Modbus master device and in the Ethernet part as a Profinet IO
Device.
Modbus requests (read or write commands) are configured in the device and a GSDML file is automatically
generated.
Once this file is imported into the PLC development software (e.g. TIA PORTAL) all configured IO will be
accessible without any other configuration.
In addition to serial devices it is also possible to connect up to 3 Modbus TCP-IP servers.
PROFINET IO DEVICE / MODBUS SLAVE GATEWAY
This operating mode allows you to connect a Profinet IO PLC controller with a maximum of 1 or 2 devices (based
on the number of serial ports available in the gateway) of the Modbus RTU/ASCII Master type (typically of the
PLCs).

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The gateway provides two different areas of 512 bytes for reading and 512 bytes for writing.
Bytes are available from Modbus Holding Register 0 to Holding Register 255 inclusive.
The “Modbus Read Area” is only readable by Modbus and only writable by Profinet.
The "Modbus Write Area" is only writable by Modbus and only readable by Profinet.

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ATTENTION!
THE GATEWAY CREATES TWO DIFFERENT MODBUS AREAS, ONE FOR READING AND ONE FOR
WRITING.
FOR EXAMPLE IF YOU WRITE BYTES FROM MODBUS THESE WILL END UP IN THE WRITING AREA
AND THEN THEY WILL NOT BE READABLE BY THE MODBUS ITSELF
GATEWAY WITH PORT#1 AND PORT#2 MASTER TAG
This operating mode is not recommended for use by the customer, it has been maintained for backward
compatibility with previous versions of the gateway and allows you to connect a Profinet IO PLC controller with
Modbus RTU/ASCII Slave I/O devices
The Gateway, in the serial part, works as a Modbus master device and in the Ethernet part as a Profinet IO
Device.
Differently from the GATEWAY PROFINET IO DEVICE / MODBUS MASTER mode, here the Modbus
commands are not defined, only the variables (TAGs), subsequently the firmware internally performs an
optimization by creating Modbus request commands.
Also in this mode it is possible to define, in addition to the serial devices, up to 3 Modbus TCP-IP servers.
STEP-BY-STEP DEVICE CONFIGURATION EXAMPLE USING
EASY SETUP 2 AND TIA PORTAL
The easiest method to configure the gateway is through the Easy Setup2 software.
For more information, refer to the help in the software.
"PROFINET IO - MODBUS MASTER GATEWAY" CONFIGURATION
You want to connect a Siemens™PLC to two Seneca Modbus RTU slave devices:
Z-10-D-IN (SLAVE STATION ADDRESS 1)

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Z-10-D-OUT (SLAVE STATION ADDRESS 2).
In the example we will use the Z-KEY-P product (the steps are exactly the same for the other R-KEY-LT-P and
Z-KEY-2ETH devices).
The 10 digital inputs of the Z-10-D-IN are from coil address 1 to coil address 10 of station address #1
The 10 digital outputs of the Z-10-D-OUT are from coil address 1 to coil 10 of Station Address #2
First we disconnect the PLC from the Ethernet network.
Now we use the Easy Setup 2 software selecting the Z-KEY-P product (with SCAN or in manual entry):
At this point the device access password is requested (default: admin):

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Once the password has been entered, select the Profinet IO Device / Modbus Master mode Gateway:
Now let's add the Modbus commands to acquire the inputs and write the outputs, select the COMMANDS
section:
We add the reading of 10 coil registers relating to the 10 digital inputs of Z-10-D-IN:

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Now let's add the writing of 10 coil registers related to the 10 digital outputs of Z-10-D-OUT:
We set the writings in "Only Periodic" so they will always be performed every 1000 ms.
Enter the profinet name of the device:
Let's verify that serial port 1 is configured correctly for slave devices:

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At this point we export the GSDML file from the "IO Mapping" section:
1 We press the button to calculate the offsets of the readings
2 We press the button to calculate the write offsets
3 We enter a name to recognize the GSDML file
4 We export the GSDML file

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ATTENTION!
IT IS ALSO POSSIBLE TO DOWNLOAD A GSDML FILE (Gateway All) FROM THE WWW.SENECA.IT
WEBSITE (IN THE SECTION RELATED TO PROFINET GATEWAYS) AND COMPOSE YOUR OWN
CONFIGURATION FROM TIA PORTAL WITHOUT HAVING TO IMPORT THE FILE EACH TIME.
Now let's send the configuration to the device with the "send" button:
We can now move on to configuring the PLC via Tia Portal™:
Creating a new project:

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Install the GSD file of the Seneca product:
Point to the directory where we previously saved the GSDML file and press INSTALL.
Now insert the Siemens PLC (in our example a SIEMATIC S7 1200), click on "Add new device ...":

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Confirm and the PLC will be added to the rack:

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Now click on the PLC and select Profinet interface -> Ethernet addresses
Set the IP you want for the PLC (in this case 192.168.90.44) and the PLC subnet:

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Move on to “devices and network” view:
On the right select "Hardware Catalogue" and then under "Additional Field Equipment" -> PROFINET IO ->
GATEWAY -> Seneca SRL - ZR-KEY-P Gateway-> ZRKEY-P Gateway Agent Master
Drag the device to the network view:

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Now associate it with the PLC:
Click with the left mouse button on "Not assigned" and then select the PLC:
Click twice on the Seneca device and configure the IP address here too (for example 192.168.90.48) and the
timing:

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Depending on the project it is necessary to set the cycle time (typically 128 ms):