ProSoft Technology PLX51-PBM User manual

PLX51-PBM
PROFIBUS DPV0/DPV1 Master or Slave
to EtherNet/IP™ or Modbus®Gateway
June 23, 2021
USER MANUAL

ProSoft Technology, Inc. Page 2 of 196
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PLX51-PBM User Manual
June 23, 2021
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PLX51-PBM Contents
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Contents
Your Feedback Please..........................................................................................................2
Content Disclaimer................................................................................................................2
Agency Approvals and Certifications.....................................................................................2
1Preface 6
1.1 Introduction to the PLX51-PBM...................................................................6
1.2 Features.......................................................................................................7
1.2.1 PROFIBUS Master ......................................................................................8
1.2.2 PROFIBUS Slave ........................................................................................8
1.3 Architecture..................................................................................................9
1.4 Additional Information................................................................................11
1.5 Support ......................................................................................................11
2Installation 12
2.1 Module Layout ...........................................................................................12
2.2 Module Mounting .......................................................................................15
2.3 PROFIBUS DP Port (RS485) ....................................................................16
3Setup 17
3.1 Install Configuration Software....................................................................17
3.2 Network Parameters..................................................................................17
3.3 GSD File Management ..............................................................................21
3.4 Creating a New Project..............................................................................23
3.5 PLX51-PBM Parameters ...........................................................................25
3.5.1 General......................................................................................................25
3.5.2 Modbus......................................................................................................27
3.5.3 Modbus Addressing...................................................................................28
3.5.4 PROFIBUS –Master Mode .......................................................................30
3.5.5 PROFIBUS –Slave Mode .........................................................................33
3.5.6 Logix ..........................................................................................................34
3.5.7 Advanced...................................................................................................35
3.5.8 Modbus Auxiliary Map ...............................................................................36
3.5.9 EtherNet/IP Devices ..................................................................................37
3.5.10 EtherNet/IP Map ........................................................................................38
3.6 Module Download......................................................................................40
3.7 Device Discovery (Online) –Master Mode................................................41
3.7.1 Discovery...................................................................................................41
3.7.2 Device Station Configuration Upload.........................................................43
3.7.3 Device Station Address Change................................................................44
3.7.4 Discovery Report .......................................................................................45
3.8 Adding PROFIBUS DP Devices –Master Mode .......................................46
3.8.1 General......................................................................................................47
3.8.2 PROFIBUS Configuration..........................................................................48
3.8.3 DPV1..........................................................................................................50
3.8.4 User Parameters........................................................................................51
3.8.5 Slot Configuration ......................................................................................52
3.8.6 Start-up Parameters ..................................................................................58
3.9 Adding PROFIBUS DP Devices –Slave Mode.........................................59
3.9.1 General......................................................................................................60
3.9.2 PROFIBUS Configuration..........................................................................61
3.9.3 DPV1..........................................................................................................63

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3.9.4 User Parameters........................................................................................64
3.9.5 Slot Configuration ......................................................................................65
3.9.6 DPV1 Objects ............................................................................................73
3.9.7 DPV1 Alarms .............................................................................................75
3.10 Logix Configuration....................................................................................76
3.10.1 EDS AOP (Logix V21+) .............................................................................76
3.10.2 Generic Module Profile (Logix Pre-V21)....................................................79
3.10.3 Multi-Connection........................................................................................82
3.11 Logix Mapping............................................................................................83
3.12 Importing the Add-On Instruction (AOI).....................................................87
3.12.1 Class 3 Messaging ....................................................................................92
3.12.2 DPV1 Class 2 Initialize ..............................................................................94
4SD Card 97
4.1 Firmware....................................................................................................98
4.2 Configuration..............................................................................................99
4.2.1 Manual Copy..............................................................................................99
4.2.2 PLX50CU Upload ....................................................................................101
5Operation 102
5.1 Logix Operation........................................................................................102
5.1.1 PROFIBUS DP - Master ..........................................................................102
5.1.2 PROFIBUS DP - Slave ............................................................................119
5.2 Modbus Operation ...................................................................................128
5.2.1 PROFIBUS DP - Master ..........................................................................128
5.2.2 PROFIBUS DP - Slave ............................................................................135
5.3 EtherNet/IP Explicit Messaging Operation ..............................................140
5.4 Explicit Messaging Utility .........................................................................141
5.5 Firmware Upgrade...................................................................................143
6Migrating Legacy PCB Projects 145
7Device Type Manager (DTM) 148
7.1 Installation................................................................................................148
7.2 Configuration............................................................................................149
7.3 Operation.................................................................................................152
8Diagnostics 155
8.1 LEDs........................................................................................................155
8.2 Module Status Monitoring........................................................................157
8.2.1 PLX51-PBM Status Window....................................................................158
8.2.2 PLX51-PBM Master Mode Status............................................................159
8.2.3 PLX51-PBM Slave Mode Status..............................................................167
8.2.4 PROFIBUS Slave Status .........................................................................173
8.3 PROFIBUS Packet Capture.....................................................................180
8.4 Modbus Packet Capture ..........................................................................182
8.5 Module Event Log....................................................................................184
8.6 Web Server..............................................................................................185
9Technical Specifications 186
9.1 Dimensions..............................................................................................186
9.2 Electrical ..................................................................................................187

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9.3 Ethernet ...................................................................................................187
9.4 PROFIBUS DP.........................................................................................188
9.5 Certifications............................................................................................188
10 PROFIBUS DP 189
10.1 Introduction..............................................................................................189
10.1.1 PROFIBUS DP.........................................................................................189
10.1.2 PROFIBUS PA.........................................................................................189
10.1.3 PROFIBUS FMS......................................................................................190
10.2 PROFIBUS Master and Slave .................................................................190
10.3 PROFIBUS Master Class 1 (DPM1) or class 2 (DPM2)..........................190
10.3.1 PROFIBUS DP Master class 1 (DPM1)...................................................190
10.3.2 PROFIBUS DP Master class 2 (DPM2)...................................................190
10.4 Cyclic Communication .............................................................................190
10.5 Acyclic Communication............................................................................191
10.6 Topology of PROFIBUS DP.....................................................................191
10.7 PROFIBUS DP Cable Description...........................................................192
10.8 PROFIBUS DP Connector Description....................................................192
11 Appendix 193
11.1 DPV1 Response Status (Master Only)....................................................193
11.2 DPV1 Extended Status Codes (Master Only) –FDL Error......................193
11.3 DPV1 Extended Status Codes (Master Only) –DPV1 Error...................193
11.3.1 DPV1 Read/Write Error ...........................................................................193
11.3.2 DPV1 Abort..............................................................................................195
12 Support, Service & Warranty 196
12.1 Contacting Technical Support..................................................................196
12.2 Warranty Information ...............................................................................196

PLX51-PBM Preface
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1 Preface
1.1 Introduction to the PLX51-PBM
This manual describes the installation, operation, and diagnostics of the ProSoft
PLX51-PBM PROFIBUS DPV0/DPV1 Master/Slave module.
The PLX51-PBM allows the user to interface PROFIBUS DP to EtherNet/IP or
Modbus (RTU232, RTU485, TCP/IP).
The PLX51-PBM can either operate as a PROFIBUS DPV0/DPV1 Master or multiple
PROFIBUS DPV0/DPV1 Slaves. This will allow EtherNet/IP devices (e.g. Rockwell
Logix platform) or Modbus devices to exchange process, alarming, and diagnostic
data with PROFIBUS DP devices as well as provide parameterization and asset
management of slave devices using Device Type Managers (DTMs).
Table 1.1 –Product Variations
Product
PROFIBUS DP Master
PROFIBUS DP Slave
PLX51-PBM
Yes
Yes
Figure 1.1 –PLX51-PBM typical PROFIBUS Master architecture

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Figure 1.2 –PLX51-PBM typical PROFIBUS Slave architecture
1.2 Features
The PLX51-PBM will allow the user to interface PROFIBUS DPV0/DPV1 to either
EtherNet/IP or Modbus.
The PLX51-PBM can be set to operate as either a PROFIBUS DP Master or Slave.
The PLX51-PBM, when configured as a Master can exchange up to 2 kilobytes of
PROFIBUS device and status data (72 bytes are reserved for master status, and 8
bytes for each configured slave).
The PLX51-PBM has two Ethernet ports allowing the user to have either a Linear or
Ring (Device Level Ring –DLR) Ethernet topology. The Ethernet ports can also be
setup for port mirroring allowing for better fault analysis.
The PLX51-PBM can synchronize to an NTP Server allowing for automatic time
synchronization. The PLX51-PBM also supports an onboard non-volatile event log for
improved fault finding.

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1.2.1 PROFIBUS Master
The PLX51-PBM can exchange process data (DPV0) with up to 125 PROFIBUS DP
slave devices. The data is formatted into the engineering units for use in either a
Logix platform or Modbus device by using the automatically generated mapping
imports for Logix User Defined Data Types (UDTs) or padding for Modbus Registers.
The latter ensures alignment with the 16-bit data structure.
The PLX51-PBM also provides DPV1 communication allowing the user to exchange
DPV1 Class 1 and Class 2 data with each slave device. The PLX51-PBM Gateway
DTM can be used to configure and parameterize each slave device using Device
Type Manager (DTM) technology.
The PLX51-PBM will allow the user to monitor and extract DPV1 alarms from each
slave device on the connected PROFIBUS DP fieldbus from either a Logix controller
or Modbus Master device.
1.2.2 PROFIBUS Slave
The PLX51-PBM can also be configured to emulate up to 10 PROFIBUS slave
devices. Each slave device emulated by the PLX51-PBM can be configured to
provide DPV0 data exchange with a PROFIBUS Master on the network.
The data will be formatted into the engineering units for use in either a Logix platform
or Modbus device by using the automatically generated mapping imports for Logix
User Defined Data Types (UDTs) or padding for Modbus Registers. The latter
ensures alignment with the 16-bit data structure.
Each emulated slave can also be configured to exchange DPV1 Class 1 data by
mapping either Logix tags or Modbus registers for the relevant DPV1 data exchange.
Each emulated slave will also be able to provide DPV1 alarming for the PROFIBUS
Master.
The PLX51-PBM provides a range of statistics and tools to provide a detailed
diagnostic overview of each PLX51-PBM which speeds-up fault finding. The
Configuration Utility allows the user to perform a PROFIBUS DP packet capture of
the running fieldbus which can be used to analyse the bus behaviour and packets
received. The PLX51-PBM also provides global and device specific statistics.

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1.3 Architecture
The figures below provide an example of the typical network setup for a PROFIBUS
Master architecture using either an EtherNet/IP or Modbus Interface.
Figure 1.3 –PLX51-PBM PROFIBUS Master to EtherNet/IP architecture
Figure 1.4 –PLX51-PBM PROFIBUS Master to Modbus (TCP/RTU232/RTU485) architecture

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The following figures provide an example of the typical network setup for a
PROFIBUS Slave(s) architecture using either an EtherNet/IP or Modbus Interface.
Figure 1.5 –PLX51-PBM PROFIBUS Slave to EtherNet/IP architecture
Figure 1.6 –PLX51-PBM PROFIBUS Slave to Modbus (TCP/IP/RTU232/RTU485) architecture

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1.4 Additional Information
The following documents contain additional information that can assist the user with
the module installation and operation.
Table 1.2 - Additional Information
Resource
Link
PLX50 Configuration
Utility Installation
www.prosoft-technology.com
PLX51-PBM User
Manual
PLX51-PBM Datasheet
www.prosoft-technology.com
1.5 Support
Technical support is provided via the Web (in the form of user manuals, FAQ,
datasheets etc.) to assist with installation, operation, and diagnostics.
For additional support the user can use either of the following:
Table 1.3 –Support Details
Resource
Link
Contact us web link
www.prosoft-technology.com
Support email
[email protected]

PLX51-PBM Installation
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2 Installation
2.1 Module Layout
The PLX51-PBM has one RS485 PROFIBUS DP port as well as two Ethernet ports
at the front of the module. The Ethernet cable must be wired according to industry
standards which can be found in the additional information section of this document.
The module provides six diagnostic LEDs as shown in the front view figure below.
These LEDs are used to provide information regarding the module system operation,
the Ethernet interface, the auxiliary communication interface (RS232/RS485), and
the PROFIBUS network status.
Figure 2.1 –PLX51-PBM Front and Side view
At the bottom of the PLX51-PBM module, there is one 3-way power connector and
one 9-way communications connector (the communications connector will be used
for RS232 and RS485 when communicating to Modbus RTU devices).
Figure 2.2 –PLX51-PBM Power connector

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The PLX51-PBM has an input voltage range of 10-36Vdc that needs to be applied to
the module via the power connector. The power connector also provides an Earth
connection for the PLX51-PBM.
IMPORTANT: It is recommended to always have a good clean earth connected to the module via the
Earth connector on the power connector.
Figure 2.3 –PLX51-PBM Auxiliary communications connector
The RS485 port provides the standard A and B conductors as well as a RS485 drive
enable. The (EN) transmit drive enable is provided to allow the PLX51-PBM to be
used with repeaters and radios that may require a transmit enable line. Note that the
EN line is referenced to RS232 GND when an RS485 mode is selected.
The RS232 port provides the standard communication conductors (RX, TX, and
GND) as well as hardware handshaking lines for legacy systems (RTS –Request to
Send, CTS –Clear to Send).
Both RS232 and RS485 share a common cable shield connection which should be
connected to the shield of the outgoing cable (RS232 and/or RS485).
At the back of the module, there is slot for a SD memory card. The module provides
four DIP switches at the top of the enclosure as shown in the top view figure below.
Figure 2.4 –PLX51-PBM Top view

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Table 2.1. - DIP Switch Settings
DIP Switch
Description
DIP 1
Used to force the module into “Safe Mode”. When in “Safe Mode” the module will
not load the application firmware and will wait for new firmware to be downloaded.
This should only be used in the rare occasion when a firmware update was
interrupted at a critical stage.
DIP 2
This will force the module into DHCP mode which is useful when the user has
forgotten the IP address of the module.
DIP 3
This DIP Switch is used to lock the configuration from being overwritten by the
PLX50 Configuration Utility. When set the PLX50 Configuration Utility will not be
able to download to the PLX51-PBM module.
DIP 4
When this DIP Switch is set at bootup it will force the module Ethernet IP address
to 192.168.1.100 and network mask 255.255.255.0. The user can then switch the
DIP switch off and assign the module a static IP address if needed.

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2.2 Module Mounting
The module provides a DIN rail clip to mount onto a 35mm DIN rail.
Figure 2.5 - DIN rail specification
The DIN rail clip is mounted on the bottom of the module at the back as shown in the
figure below. Use a flat screw driver to pull the clip downward. This will enable the
user to mount the module onto the DIN rail. Once the module is mounted onto the
DIN rail the clip must be pushed upwards to lock the module onto the DIN rail.
Figure 2.6 - DIN rail mouting

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2.3 PROFIBUS DP Port (RS485)
The PROFIBUS DP port uses a female DB9 connector. This provides connection for
the communication conductors, cable shielding and +5Vdc output power.
Figure 2.7 –PLX51-PBM PROFIBUS DP (RS485) DB9 connector
Table 2.2 –DB 9 Connector layout
Pin
Signal
Description
1
-
Not connected
2
-
Not connected
3
RxD/TxD-P
Data received and transmit (+)
4
CNTR-P
Control signal to repeater (+)
5
DGND
Reference potential for +5Vdc
6
VP
+5Vdc for terminating resistors (active termination)
7
-
Not connected
8
RxD/TxD-N
Data received and transmit (-)
9
-
Not connected

PLX51-PBM Setup
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3 Setup
3.1 Install Configuration Software
All the network setup and configuration of the module is achieved by means of the
ProSoft PLX50 Configuration Utility. This software can be downloaded from:
www.prosoft-technology.com.
Figure 3.1. - ProSoft PLX50 Configuration Utility Environment
3.2 Network Parameters
The module will have DHCP (Dynamic Host Configuration Protocol) enabled as
factory default. Thus, a DHCP server must be used to provide the module with the
required network parameters (IP address, subnet mask, etc.). There are a number of
DHCP utilities available, however it is recommended that the DHCP server in the
PLX50 Configuration Utility be used.
Within the PLX50 Configuration Utility environment, the DHCP server can be found
under the Tools menu.
Figure 3.2. - Selecting DHCP Server

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Once opened, the DHCP server will listen on all available network adapters for
DHCP requests and display their corresponding MAC addresses.
Figure 3.3. - DHCP Server
NOTE: If the DHCP requests are not displayed in the DHCP Server it may be due to the local PC’s
firewall. During installation the necessary firewall rules are automatically created for the Windows
firewall. Another possibility is that another DHCP Server is operational on the network and it has
assigned the IP address.
To assign an IP address, click on the corresponding “Assign” button. The IP Address
Assignment window will open.
Figure 3.4. - Assigning IP Address
The required IP address can then be either entered, or a recently used IP address
can be selected by clicking on an item in the Recent List.
If the “Enable Static” checkbox is checked, then the IP address will be set to static
after the IP assignment, thereby disabling future DHCP requests.
Once the IP address window has been accepted, the DHCP server will automatically
assign the IP address to the module and then read the Identity object Product name
from the device.

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The successful assignment of the IP address by the device is indicated by the green
background of the associated row.
Figure 3.5. - Successful IP address assignment
It is possible to force the module back into DHCP mode by powering up the device
with DIP switch 2 set to the On position.
A new IP address can then be assigned by repeating the previous steps.
IMPORTANT: It is important to return DIP switch 2 back to Off position, to avoid the module returning to
a DHCP mode after the power is cycled again.
In addition to the setting the IP address, a number of other network parameters can
be set during the DHCP process. These settings can be viewed and edited in the
PLX50 Configuration Utility Application Settings, in the DHCP Server tab.
Once the DHCP process has been completed, the network settings can be set using
the Ethernet Port Configuration via the Target Browser.
The Target Browser can be accessed under the Tools menu.
Figure 3.6. - Selecting the Target Browser

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The Target Browser automatically scans the Ethernet network for EtherNet/IP
devices.
Figure 3.7. - Target Browser
Right-clicking on a device, reveals the context menu, including the Port Configuration
option.
Figure 3.8. - Selecting Port Configuration
All the relevant Ethernet port configuration parameters can be modified using the
Port Configuration window.
Figure 3.9. - Port Configuration
Alternatively, these parameters can be modified using Rockwell Automation’s RSLinx
software.