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PLX51-DLplus-232
Data Logger Plus
Data Storage Module
October 3, 2019
USER MANUAL
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CONTENTS
1 Preface .................................................................................................................................... 7
1.1 Introduction to the PLX51-DLplus-232 ............................................................................. 7
1.2 Features ............................................................................................................................ 8
1.3 Additional Information ................................................................................................... 10
2 Installation ............................................................................................................................ 11
2.1 Module Layout ............................................................................................................... 11
2.2 Module Mounting .......................................................................................................... 13
2.3 Power ............................................................................................................................. 14
2.4 RS232 Port ...................................................................................................................... 14
2.5 Ethernet Port .................................................................................................................. 14
3 Setup ..................................................................................................................................... 15
3.1 Install Configuration Software ....................................................................................... 15
3.2 Network Parameters ...................................................................................................... 15
DHCP Server Settings ............................................................................................................ 15
Network Settings ................................................................................................................... 18
3.3 Creating a New Project ................................................................................................... 20
3.4 Configuring the PLX51-DLplus-232 ................................................................................. 22
General Tab ........................................................................................................................... 22
Serial Tab ............................................................................................................................... 24
3.5 Data Source Configuration ............................................................................................. 25
Group and Tag Triggers ......................................................................................................... 26
Logix Source .......................................................................................................................... 26
DF1 Source ............................................................................................................................ 29
Modbus Source ..................................................................................................................... 30
3.6 Module Download .......................................................................................................... 31
4 RSLogix 5000 Configuration .................................................................................................. 33
4.1 Add Module to I/O Configuration .................................................................................. 33
4.2 Importing UDT’s and Mapping Routines ........................................................................ 35
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4.3 RSLogix 5000 assemblies ................................................................................................ 38
Input Assembly...................................................................................................................... 38
4.4 Inhibiting the Module ..................................................................................................... 39
5 Diagnostics ............................................................................................................................ 41
5.1 LEDs ................................................................................................................................ 41
5.2 Module Status Monitoring ............................................................................................. 42
General Tab ........................................................................................................................... 44
Statistics tab .......................................................................................................................... 45
Tag Status Tab ....................................................................................................................... 46
Recent Records Tab .............................................................................................................. 47
Record Management Tab ..................................................................................................... 48
CIP Statistics Tab ................................................................................................................... 49
Ethernet Clients Tab .............................................................................................................. 50
TCP / ARP Tab ........................................................................................................................ 51
6 Retrieving Logged Data from the PLX51-DLplus-232 ............................................................ 53
6.1 DF1 Packet Capture ........................................................................................................ 53
6.2 Modbus Packet Capture ................................................................................................. 56
6.3 Module Event Log........................................................................................................... 59
6.4 Web Server ..................................................................................................................... 61
6.5 Web Reporting ............................................................................................................... 62
Retrieve Trend Data .............................................................................................................. 64
Customize Graph Axis ........................................................................................................... 67
Upload Records to CSV File ................................................................................................... 71
7 JSON Client ............................................................................................................................ 73
7.1 General Status ................................................................................................................ 73
7.2 Cache Statistics ............................................................................................................... 74
7.3 Unload Log Index Update ............................................................................................... 74
7.4 Cache Records ................................................................................................................ 75
7.5 Reset Log Indexes ........................................................................................................... 76
7.6 Get Tag Names ............................................................................................................... 76
7.7 Trend Data ...................................................................................................................... 77
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7.8 Trend Data UTC .............................................................................................................. 78
7.9 Invalid Request Response .............................................................................................. 80
7.10 Operation ....................................................................................................................... 80
Get Tag Database .................................................................................................................. 80
Get Trend Data ...................................................................................................................... 80
Get Cache Records ................................................................................................................ 81
7.11 Examples ........................................................................................................................ 82
General Status Message ....................................................................................................... 82
Cache Records Message........................................................................................................ 83
8 Technical Specifications ........................................................................................................ 85
8.1 Dimensions ..................................................................................................................... 85
8.2 Electrical ......................................................................................................................... 86
8.3 Ethernet .......................................................................................................................... 86
8.4 Data Cache ..................................................................................................................... 87
8.5 Serial Port ....................................................................................................................... 87
8.6 DF1.................................................................................................................................. 87
8.7 Modbus .......................................................................................................................... 88
8.8 Agency Approvals & Certifications ................................................................................. 88
9 Support, Service & Warranty ................................................................................................ 89
9.1 Contacting Technical Support ........................................................................................ 89
9.2 Warranty Information .................................................................................................... 91
10 Index ...................................................................................................................................... 93
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1 PREFACE
1.1 Introduction to the PLX51-DLplus-232
This manual describes the installation, configuration, operation, and diagnostics of the PLX51DLplus-232. The PLX51-DLplus-232 can read and store data from Logix Controllers, DF1 Serial
Interfaces, or Modbus devices. The PLX51-DLplus-232 has the capacity to store over 16 million
records in its solid-state non-volatile memory. Each stored record includes a Date Time stamp
with a 50 ms resolution, Tag Name, Data Type, and Value.
The PLX51-DLplus-232 can be used to log data at a remote site with limited communication
with its base. The PLX51-DLplus-232 is also used to store records on mobile equipment such as
trucks, drilling rigs, or snow plows. Once the equipment returns back to its base, the historical
data can be uploaded and transferred to a more permanent storage device. The PLX51-DLplus232 can also be configured to collect data which is only downloaded and examined if a fault
occurs, otherwise the data is overwritten.
Compared to the PLX51-DL-232, the PLX51-DLplus-232 has the following additional features:
Trend up to five variables dynamically via the integrated webserver
Upload logged data directly from the integrated webserver
REST API support retrieves data automatically via JSON-encoded messages.
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Non-Historian Option
Parameter
Link
Date Time
UTC Time includes: Year, Month, Day, Hour, Minute, Second, Milliseconds.
Time has a resolution of 50 milliseconds.
Tag Name
As defined in Controller or in the PLX50 Configuration Utility for other sources
Data Type
BOOL, SINT, INT, DINT, or REAL
Value
Logix Tag / DF1 File / Modbus Register value
1.2 Features
The PLX51-DLplus-232 provides temporary extensive on-board storage capability for storing
process tags. A total of 16,777,216 records can be stored in its non-volatile memory.
Each record consists of the following data:
Components of a Record
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The Log Index is managed by the PLX51-DLplus-232 and incremented each time a new record is
stored. The Unload Index is managed externally by the unload service. It is only incremented after
a record has been logged successfully to a text file. The records can be unloaded in Logix with the
Example Code. Both the Log Index and Unload Indices loop around, eventually reaching the end
of the cache. The cache becomes 100% full when the Log Index loops around and equals the
Unload Index. In this situation, either older records are overwritten (Log Mode = Overwrite) or
newer records are not logged (Log Mode = Hold).
Memory Schematic
The PLX51-DLplus-232 is configured using the ProSoft PLX50 Configuration Utility. This program
can be downloaded from www.prosoft-technology.com, free of charge. The PLX50 Configuration
Utility offers various configuration methods, including a controller tag browser. The PLX50
Configuration Utility can also be used to monitor the status and download historical data to a
local file.
The PLX51-DLplus-232 can operate in both a Logix “owned” and standalone mode. With a Logix
connection, the input and output assemblies provide additional diagnostics information. This
information is available in the Logix controller environment.
The PLX51-DLplus-232 uses isolated RS232 for DF1 communication. The RS232 port also uses a
terminal block for convenient installation.
A built-in webserver provides detailed diagnostics of system configuration and operation.
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1.3 Additional Information
Resource
Link
PLX50 Configuration
Utility Installation
www.prosoft-technology.com
User Manual
Datasheet
Example Code & UDTs
www.prosoft-technology.com
Ethernet wiring standard
www.cisco.com/c/en/us/td/docs/video/cds/cde/cde205_220_420/installation/
guide/cde205_220_420_hig/Connectors.html
CIP Routing
The CIP Networks Library, Volume 1, Appendix C:Data Management
For professional users in the European Union
If you wish to discard electrical and electronic equipment (EEE), please contact your dealer
or supplier for further information.
Warning – Cancer and Reproductive Harm – www.P65Warnings.ca.gov
The following documents contain additional information that can assist you with installation and
operation.
Additional Information
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2 INSTALLATION
2.1 Module Layout
The PLX51-DLplus-232 has three ports at the bottom of the enclosure, as shown in the figure
below. The ports are used for Ethernet, RS232 serial, and power.
The DC power port uses a three-way connector (+ positive, - negative, and Earth).
The RS232 port uses a four-way connector (Tx Transmit, Rx Receive, Gnd Ground, and Shield
earth connection).
The Ethernet cable must be wired according to industry standards which can be found in the
additional information section of this document.
Figure 2.1 –Side and bottom view
The PLX51-DLplus-232 provides three diagnostic LEDs (Ok, Act, and Eth). These LEDs provide
information on system operation, the Ethernet interface, and the auxiliary communication
interface (RS232).
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DIP Switch
Description
DIP 1
Used to force the PLX51-DLplus-232 into “Safe Mode”. When in “Safe Mode”, the
PLX51-DLplus-232 does not load the application firmware. It waits for new firmware
to be downloaded. This should only be used when a firmware update was interrupted
at a critical stage.
DIP 2
Used to force the PLX51-DLplus-232 into DHCP mode, useful when the user has
forgotten the IP address of the PLX51-DLplus-232.
Note: If multiple network cards are running on your PC, the DHCP will be unreliable.
Only one DHCP server should be used.
DIP 3
Reserved
DIP 4
Reserved
Figure 2.2 – Front and top view
The PLX51-DLplus-232 has four DIP switches at the top of the enclosure as shown above.
Table 2.1 - DIP Switch Settings
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2.2 Module Mounting
The PLX51-DLplus-232 provides a DIN rail clip to mount onto a 35mm DIN rail.
Figure 2.3 - DIN rail specification
The DIN rail clip is mounted on the bottom of the PLX51-DLplus-232. Use a flat screw driver to
pull the clip downward. Once the PLX51-DLplus-232 is mounted onto the DIN rail, the clip must
be pushed upward to lock the PLX51-DLplus-232 in place.
Figure 2.4 - DIN rail mouting
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2.3 Power
A three-way power connector is used to connect + positive, - negative, and Earth. The PLX51DLplus-232 requires an input voltage of 10 to 28 Vdc.
Figure 2.5 - Power connector
2.4 RS232 Port
The RS232 connector is used to connect the Transmit (Tx), Receive (Rx), and Ground conductors
for serial communication. The shield terminal can be used for shielded cable in high noise
environments.
NOTE: The shield of the RS232 port is internally connected to the power connector
earth. Thus, when using a shield it is important to connect the Earth terminal on
the power connector to a clean earth. Failing to do this can lower the signal quality
of the RS232 communication.
NOTE: When using a shielded cable, it is important that only one end of the shield
is connected to earth to avoid current loops. It is recommended to connect the
shield to the PLX51-DLplus-232, and not to the other Serial device.
Figure 2.6 - RS232 connector
2.5 Ethernet Port
The Ethernet connector should be wired according to industry standards. Refer to the additional
information section in this document for further details.
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3 SETUP
3.1 Install Configuration Software
The PLX51-DLplus-232 is configured using the PLX50 Configuration Utility environment. This
software can be downloaded from www.prosoft-technology.com.
Figure 3.1 - PLX50 Configuration Utility Environment
3.2 Network Parameters
DHCP SERVER SETTINGS
By default, the PLX51-DLplus-232 has DHCP (Dynamic Host Configuration Protocol) enabled.
Thus, a DHCP server must be used to provide the PLX51-DLplus-232 with the required network
parameters (IP address, subnet mask, etc.). There are a number of DHCP utilities available.
However, it is recommended to use the DHCP server in the PLX50 Configuration Utility.
Note: If multiple network cards are running on your PC, the DHCP will be unreliable. Only one
DHCP server should be used.
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1 Within the PLX50 Configuration Utility, click on TOOLS > DHCP SERVER.
Figure 3.2 - Selecting DHCP Server
2 Once opened, the DHCP server listens on all available network adapters for DHCP requests
and displays 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.
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3 To assign an IP address, click on the corresponding ASSIGN button. The Assign IP Address
dialog box opens.
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, the IP address will be set to static after the IP
assignment, thereby disabling future DHCP requests.
4 Click OK when complete.
5 Once the Assign IP Address dialog box has been accepted, the DHCP server automatically
assigns the IP address to the PLX51-DLplus-232 and reads the Identity Object Product
name from the device. The device indicates a green background upon successful
assignment of the IP address.
Figure 3.5 - Successful IP address assignment
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It is possible to force the PLX51-DLplus-232 into DHCP mode by powering up the device with DIP
switch 2 in the On position. A new IP address can be assigned by repeating the previous steps.
NOTE: It is important to return DIP switch 2 back to Off position, to avoid the
PLX51-DLplus-232 returning to a DHCP mode after the power is cycled again.
In addition to the setting the IP address, other network parameters can be set during the DHCP
process. These settings can be viewed and edited by clicking on TOOLS > APPLICATION SETTINGS.
NETWORK SETTINGS
Once the DHCP process has been completed, the network settings can be set using the Ethernet
Port Configuration via the Target Browser.
1 Click on TOOLS > TARGET BROWSER
Figure 3.6 - Selecting the Target Browser
2 The Target Browser automatically scans the Ethernet network for EtherNet/IP devices.
Figure 3.7 - Target Browser
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3 Right-clicking on a device reveals the context menu, including the Port Configuration
option.
Figure 3.8 - Selecting Port Configuration
4 All relevant Ethernet port configuration parameters can be modified using the Port
Configuration dialog box.
Figure 3.9 - Port Configuration
Alternatively, these parameters can be modified using the Rockwell Automation RSLinx software.
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3.3 Creating a New Project
Before you configure the PLX51-DLplus-232, a new PLX50 Configuration Utility project must be
created.
1 Click on FILE > NEW.
Figure 3.10 - Creating a new project
2 A new project is created and displayed in the Project Explorer tree view.
3 Add a new device by clicking on DEVICE > ADD.
Figure 3.11 - Adding a new device
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4 In the Add New Device dialog box, select the PLX51-DLplus-232 and click the Ok button.
Figure 3.12 – Selecting the PLX51-DLplus-232
5 The device appears in the Project Explorer tree, and its configuration window is opened.
The device configuration window can also be opened by double-clicking the PLX51DLplus-232 icon in the Project Explorer tree, or right-clicking the PLX51-DLplus-232 icon
and selecting Configuration.
Figure 3.13 – PLX51-DLplus-232 configuration
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3.4 Configuring the PLX51-DLplus-232
The PLX51-DLplus-232 is configured by the PLX50 Configuration Utility. The configuration consists
of a general configuration, serial configuration for DF1 or Modbus RTU, data source
configuration, and tag selections. The PLX51-DLplus-232 configuration is saved in non-volatile
memory that persists when the PLX51-DLplus-232 is powered down.
NOTE: When a firmware upgrade is performed, the PLX51-DLplus-232 will clear all
configuration and cached records.
GENERAL TAB
The general configuration is shown in the figure below. The general configuration window is
opened by either double-clicking on the PLX51-DLplus-232 icon in the tree, or right-clicking the
PLX51-DLplus-232 icon and selecting Configuration.
Figure 3.14 - General Configuration
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The general configuration consists of the following parameters:
Parameter
Description
Instance Name
This parameter is a user defined name to identify between various PLX51-DLplus232’s.
Description
This parameter is used to provide a more detailed description of the PLX51-DLplus-
232.
Major Revision
The major revision of the PLX51-DLplus-232.
IP Address
The PLX51-DLplus-232’s IP address used by the PLX50 Configuration Utility to
communicate with the PLX51-DLplus-232.
Data Source
This parameter selects the source of the data.
Logix – Rockwell Automation ControlLogix or Compact Logix controller
DF1 – Serial DF1
ModbusRTU – Serial Modbus
ModbusTCP – Modbus over Ethernet
Logging Mode
This parameter determines if records are overwritten once the memory is filled.
Overwrite = Old records are overwritten, giving priority to newer data.
Hold = Old records are preserved while new records are not stored.
Table 3.1 - General configuration parameters
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SERIAL TAB
Parameter
Description
Baud Rate
This configures the speed of the data that is sent across the RS232 serial network.
The PLX51-DLplus-232 provides the following speeds:
1200, 2400, 4800, 9600, 19200, 38400, 57600, and 115200
Parity
This configures the parity of the RS232 serial port. The PLX51-DLplus-232 allows
for Even, Odd, or None.
Protocol
This configures the PLX51-DLplus-232 to operate in full duplex or half duplex mode
on the DF1 network.
Error Detection
The PLX51-DLplus-232 can be configured to perform either BCC or CRC checksum
validation on incoming and outgoing packets. CRC checksums is a much stronger
validation method, but is more processor-intensive to perform.
Embedded Response
This configures the PLX51-DLplus-232 to add the acknowledge responses in the
data payload. It can be configured to be Auto Detect or On.
This function is only available in Full Duplex mode.
The Serial tab is shown in the figure below. The Serial configuration is opened by either doubleclicking on the PLX51-DLplus-232 icon in the tree, or right-clicking the PLX51-DLplus-232 icon and
selecting Configuration. Select the Serial tab.
Figure 3.15 - Serial configuration
The Serial configuration (Serial tab) consists of general Serial and DF1-specific parameters. For
Modbus RTU, only the Baud Rate and Parity need be configured.
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Node Address
The node address is the local node address of the PLX51-DLplus-232.
Retry Limit
This determines how many times the PLX51-DLplus-232 must retry and message
exchange before failing it.
Timeout
This determines the interval between retries for a failed message exchange.
Reply Msg Wait
This is the minimum delay before the DF1 reply is transmitted to the DF1 device.
Duplicate Detection
This configures the PLX51-DLplus-232 to check for duplicate packets and flagging
them.
Table 3.2 - Serial Modbus RTU and DF1 configuration parameters
3.5 Data Source Configuration
The Data Source tabs determine the PLX51-DLplus-232 communication mode used to acquire
data. The Data Source options include:
Logix Source – ControlLogix and Compact Logix controllers
DF1 Source – For collecting data over DF1 Serial communications
Modbus Source – for Modbus RTU (Serial) and ModbusTCP (Ethernet) communications
Once the data source is selected, each tab allows the configuration of up to three source devices
and a total of 200 tags.
Tags can be logged as a result of their individual log criteria or via a group trigger. There are eight
trigger groups (A thru H), and a tag can be a member of any trigger group. Groups are in turn
triggered by one or more tags. The triggering of a group ensures all its member’s values are
logged at the same instance.
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GROUP AND TAG TRIGGERS
Three parameters determine when a tag is triggered:
Delta Y (Δy) – A change in the value of the tag by this amount or more, AND
Min ΔT – The minimum time in seconds between each consecutive trigger, OR
Max ΔT – The maximum time between each consecutive trigger. Setting the Max ΔT to ‘0’
disables the “heartbeat” and allows you to log on trigger.
The first two parameters work together to ensure tags are not logged too frequently, and the
Max ΔT is set at a minimum logging frequency.
Figure 3.17 – Group and Tag Triggers
LOGIX SOURCE
The Logix Source tab is used to configure tags from Rockwell Automation Logix controllers over
EtherNet/IP. The PLX51-DLplus-232 can read tags from up to three separate controllers. A Target
Name must be provided. This acts as a reference to the Logix CIP path. The Target Name does
not have to match the actual controller name set in RSLogix. The Controller’s CIP Path can either
be typed in or selected from a list in the Target Browser.
Figure 3.20 – Logix Source Configuration Tab
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1 Click the BROWSE button in the browse column to launch the Target Browser. The Target
Browser opens and automatically scans for all available EtherNet/IP devices.
Figure 3.21 – Target Browser Window
2 If the Ethernet/IP module is a bridge module, it can be expanded by right-clicking on the
PLX51-DLplus-232 icon and selecting the Scan option.
Figure 3.22 - Scanning node in the Target Browser
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3 The Logix controller can be selected by clicking the Ok button, or by double-clicking on
the controller module.
4 Once the controller references have been configured, the individual Logix tags can be
added. Tags can either be entered manually or selected by using the Tag Browser
associated with each controller.
Figure 3.23 - Logix Tag configuration
NOTE: Tag names need to match in order for the PLX51-DLplus-232 to correctly
identify the tag. Full tag names are needed for tags to be located in program scopes.
5 To launch the Tag Browser, click the BROWSE TAGS button associated with the controller.
Tags that are were already selected and identified are highlighted in green. See Fig 3.24.
Figure 3.24 – Tag Browser Selection
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6 Tags can be removed by selecting the rows in the left margin, and right-clicking to display
the DELETE option.
Figure 3.25 – Deleting Tags
DF1 SOURCE
A maximum of three DF1 Sources can be configured. The configuration of each source requires a
Device Name (used as a reference for tag data sources), the Device Type (either PLC5 or SLC), and
a Node Address.
Each DF1 Tag requires a unique Tagname and Data Address.
Figure 3.26 – DF1 Source configuration
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MODBUS SOURCE
Both Modbus RTU and Modbus TCP/IP are configured using the Modbus Source tab. For Modbus
RTU, a maximum of three Modbus sources can be configured. The configuration of each source
requires a Device Name (used as a reference for tag data sources), the IP Address (Modbus TCP/IP
only), and a Node Address.
Fig 3.27 – Modbus Source Configuration
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3.6 Module Download
Once the configuration is complete, it must be downloaded to the PLX51-DLplus-232.
Before downloading, the connection path of the PLX51-DLplus-232 should be set. This path
automatically defaults to the PLX51-DLplus-232 IP address, as set in the PLX51-DLplus-232
configuration. It can be modified if the PLX51-DLplus-232 is not on a local network.
1 The connection path can be set by right-clicking on the PLX51-DLplus-232 icon and
selecting the Connection Path option.
2 The new connection path can be entered manually or selected by means of the Target
Browser.
Figure 3.29 - Connection Path
3 To initiate the download, right-click on the PLX51-DLplus-232 icon and select Download.
Figure 3.30 - Selecting Download
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4 Once complete, you will be notified that the download was successful.
Figure 3.31 - Successful download
5 During the download process, the PLX51-DLplus-232’s time will be compared to that of
the PC’s time. Should the difference be greater than 30 seconds, you will be prompted
to set the PLX51-DLplus-232 time to that of the PC time.
Figure 3.32 – Setting module time
6 The PLX51-DLplus-232 time is used only for the event log. Within the PLX50
Configuration Utility environment, the PLX51-DLplus-232 will be in the Online state,
indicated by the green circle around the PLX51-DLplus-232 icon.
Figure 3.33 - Module Online
7 The PLX51-DLplus-232 is now configured.
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4 RSLOGIX 5000 CONFIGURATION
Connection Parameter
Assembly Instance
Size
Input
103
29 (32-bit)
Output
104
1 (32-bit)
Configuration
102
0 (8-bit)
4.1 Add Module to I/O Configuration
The PLX51-DLplus-232 can operate in both a Logix “owned” and standalone mode. When the
PLX51-DLplus-232 operates in a Logix “owned” mode, the PLX51-DLplus-232 needs to be added
to the RSLogix 5000 / Studio5000 IO tree, as a generic Ethernet module.
1 Right-click on the Ethernet Bridge in RSLogix 5000 and select New Module. Then select
ETHERNET-MODULE and click Ok.
2 Enter the IP address of the PLX51-DLplus-232. The Assembly Instance and Size must also
Figure 5.1 - Add a Generic Ethernet Module in RSLogix 5000
be added for the input, output, and configuration in the Connection Parameters section.
Below are the required connection parameters.
Table 5.1 - RSLogix class 1 connection parameters
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Figure 5.2 - RSLogix General module properties in RSLogix 5000
3 Add the connection requested packet interval (RPI). This is the rate at which the input and
output assemblies are exchanged. The recommended value is 500 ms. Refer to the
technical specification section in this document for further details on the limits of the RPI.
NOTE: Although the PLX51-DLplus-232 is capable of running with an RPI of 10 ms,
it is recommended to set the RPI to 500 ms to avoid unnecessary overloading of
the PLX51-DLplus-232 processor.
Figure 5.3 - Connection module properties in RSLogix 5000
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4 Once the PLX51-DLplus-232 has been added to the RSLogix 5000 IO tree, assign the User
Defined Types (UDTs) to the input and output assemblies. You can import the required
UDTs by right-clicking on the User-Defined sub-folder in the Data Types folder and
selecting Import Data Type. The assemblies are then assigned to the UDTs with a ladder
copy instruction (COP).
Figure 5.4 – RSLogix 5000 I/O module tree
4.2 Importing UDT’s and Mapping Routines
To simplify the mapping of the input image, an RSLogix 5000 Routine Partial Import (.L5X) file is
provided.
1 Right-click on the required Program and select the Import Routine option.
Figure 5.5 – RSLogix 5000 Importing PLX51-DLplus-232 routine and UDTs
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2 Select the proper .L5X file.
Figure 5.6 - Selecting import file
The import creates the following:
The required UDTs (user defined data types)
Controller tags representing the Input Assembly.
A routine mapping the PLX51-DLplus-232 to the aforementioned tag.
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3 You may need to change the routine to map to the correct PLX51-DLplus-232 instance
name. Make sure that the mapping routine is called by the Program’s Main Routine.
Figure 5.7 - Imported RSLogix 5000 objects
Refer to the Additional Information section of this document for an RSLogix 5000 project
example, as well as the required UDTs.
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4.3 RSLogix 5000 assemblies
Parameter
Datatype
Description
Instance
STRING
Instance name of the PLX51-DLplus-232 that was configured under
the General Configuration tab in the PLX50 Configuration Utility.
Status.Running
BOOL
Set if the PLX51-DLplus-232 has a valid configuration and is reading
tags.
Status.ConfigValid
BOOL
Set if a valid configuration is executing in the PLX51-DLplus-232.
Status.ContinuousLogging
BOOL
Set if Logging Mode is set to Overwrite, clear for Hold.
Status.ConfigurationValid
BOOL
Set if a valid configuration is executing in the PLX51-DLplus-232.
Status.LoggingInhibited
BOOL
Not Used.
Status.LoggingStopped
BOOL
Not Used.
CachePercentage
REAL
The number of cached records not yet uploaded, as a percentage of
the total record capacity of 16,777,216.
CacheRecordCount
DINT
The number of cached records not yet uploaded.
When the PLX51-DLplus-232 operates in a Logix “owned” mode, the Logix controller establishes
a class 1 cyclic communication connection with the PLX51-DLplus-232. An input assembly is
exchanged at a fixed interval. The provided UDTs convert the input arrays into tag-based
assemblies. Refer to the Additional Information section in this document for more information
on the input UDTs. There are no Output or Configuration assemblies.
Figure 5.8 - Input assembly UDT structure
INPUT ASSEMBLY
The following parameters are used in the input assembly of the PLX51-DLplus-232.
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TotalRecordCount
DINT
The total number of cached records uploaded or not.
ActiveTagCount
DINT
The number of individual tags configured to be read.
DataSource .EtherNetIP
BOOL
Set if the data source is set to Logix.
DataSource .DF1
BOOL
Set if the data source is set to DF1.
DataSource .ModbusRTU
BOOL
Set if the data source is set to Modbus RTU.
DataSource .ModbusTCP
BOOL
Set if the data source is set to Modbus TCP/IP.
DataSourceReadCount
DINT
The number of tag reads from the configured data source.
Table 5.2 - RSLogix 5000 input assembly parameters
4.4 Inhibiting the Module
The PLX51-DLplus-232 can be inhibited by setting the first bit of the DLplus232:O.Data[0] output
image to ‘1’, as shown below:
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5 DIAGNOSTICS
LED
Description
Ok
The Ok LED provides information of the system-level operation of the PLX51-DLplus-
232.
If the LED is green, then the PLX51-DLplus-232 has booted and is running correctly.
If the LED is red, then the PLX51-DLplus-232 is not operating correctly. For example, if
the PLX51-DLplus-232 application firmware has been corrupted or there is a hardware
fault, Ok LED will be red.
Act
The Act LED is used for the RS232 serial port. For every successful received DF1 or
Modbus-RTU packet, the Act LED toggles green. The LED toggles red if a corrupted
packet is received (eg. failed checksum).
Eth
The Eth LED illuminates when an Ethernet link is detected (by plugging in a connected
Ethernet cable). The LED flashes when traffic is detected.
5.1 LEDs
The PLX51-DLplus-232 provides three LEDs for diagnostics purposes as shown below.
Figure 6.1 - Front view
Table 6.1 - Module LED operation
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5.2 Module Status Monitoring
The PLX51-DLplus-232 provides a range of statistics that can assist with module operation,
maintenance, and troubleshooting. The statistics can be accessed by the PLX50 Configuration
Utility or using the PLX51-DLplus-232 web server.
1 To view the PLX51-DLplus-232’s status in the PLX50 Configuration Utility, the PLX51-
DLplus-232 must be online. If the PLX51-DLplus-232 is not Online (following a recent
configuration download), right-click on the PLX51-DLplus-232 icon and select the Go
Online option.
Figure 6.2 - Selecting to Go Online
2 The Online mode is indicated by the green circle behind the PLX51-DLplus-232 in the
Project Explorer tree.
Figure 6.3 - Selecting online Status
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3 The Status window is opened by either double-clicking on the Status option in the Project
Explorer tree, or by right-clicking on the PLX51-DLplus-232 icon and selecting Status.
4 The Status window contains multiple tabs to display the current status of the PLX51-
DLplus-232.
Figure 6.4 - Status monitoring - General
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GENERAL TAB
Parameter
Description
Data Source
Logix, DF1, Modbus RTU, Modbus TCP/IP
State
This is the current state of the module.
Running
The module is reading tags and logging to the log.
Stopped
The module is idle and not reading tags or logging data.
Logging Mode
Hold or Overwrite – determines if records are overwritten when the cache is full.
Logging State
This is the current state of the logging in the module.
Running
Data is being read from the source and logged if the criteria is met.
Running Rollover
Data is being read from the source and logged if the criteria is met. In this state the
event index has rolled over at least once.
Inhibited
The module has stopped reading and logging data, because the user has inhibited it
from Logix.
Stopped
The module has stopped logging data, because it has reached maximum events and
the module is set to not overwrite.
Owned
Indicates whether or not the PLX51-DLplus-232 is currently owned (Class 1) by a Logix
controller.
Up Time
Indicates the elapsed time since the PLX51-DLplus-232 was powered up.
Module Time
Indicates the PLX51-DLplus-232’s internal time. The PLX51-DLplus-232 time is stored
in UTC (Universal Coordinate Time) but displayed on this page according to the local
PC Time Zone settings
MAC Address
Displays the PLX51-DLplus-232’s unique Ethernet MAC address.
Temperature
Internal temperature of the PLX51-DLplus-232.
Processor Scan
Amount of time (microseconds) taken by the PLX51-DLplus-232’s processor in the last
scan.
DIP Switch Position
Status of the DIP switches when the PLX51-DLplus-232 booted.
Note that this status will not change if the DIP switches are altered when the PLX51-
DLplus-232 is running.
The General tab displays the following general parameters as well as setting the PLX51-DLplus232 time to the PC time:
Table 6.2 - Parameters displayed in the Status Monitoring – General Tab
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STATISTICS TAB
Statistic
Description
Total Records
The total number of cached records, uploaded or not.
Cache Records
The number of cached records not yet uploaded.
Cache Percentage
The number of cached records not yet uploaded, as a percentage of the total record
capacity of 16,777,216.
Active Tags
The number of individual tags configured to be read.
Data Source Reads
The number of tag reads from the configured data source.
Log Index
The current record index being written to.
Unload Index
The upload record index. Managed by the Unload Service.
Statistic
Description
Current Connections
The number of current open class 3 connections.
Connection Failures
The number of failed attempts at establishing a class 3 connection with a Logix
controller.
Tag Not Exist Errors
The number of failed tag read/write transactions due to a non-existent destination tag.
Privilege Violations
The number of failed tag read/write transactions due to a privilege violation error.
This may be caused by the External Access property of the Logix tag being set to either
None or Read Only.
Tag Reads
The number of tag read transactions executed by the PLX51-DLplus-232.
The Statistics tab displays the statistics of the record cache and data source.
Figure 6.5 - Status monitoring - Transactions
Table 6.3 – Cache Statistics
Table 6.4 – Logix statistics
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TAG STATUS TAB
Statistic
Description
TagID
Configured Tag ID for the specific Tag/Register/File.
Device
The configured source device where the tag is extracted.
Tagname
The Tagname configured for the specific tag.
Value
The last read value from the specific tag.
Delta Y
Configured deadband for the tag value.
Time
The time in seconds since the last data was logged.
Min Delta Time
Minimum time in seconds between consecutive data logging.
Max Delta Time
Maximum time in seconds between consecutive data logging.
The Tag Status tab provides current values for all tags, along with their trigger settings. The
following tag mapping statistics are only relevant when the PLX51-DLplus-232 is running in
either Reactive Tag or Scheduled Tag mode.
Figure 6.6 – Tag Status
Table 6.4 – Tag Status
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RECENT RECORDS TAB
Statistic
Description
Index
Logged data index.
Date Time
The time stamp when the data was logged.
Tag ID
Configured Tag ID for the specific Tag/Register/File.
Device
The configured source device where the tag is extracted.
Tagname
The Tagname configured for the specific tag.
Value
The last logged value from the specific tag.
The Recent Records tab provides a list of the last records recorded with their time stamp and
value.
Figure 6.7 – Recent Records
Table 6.5 – Recent Records
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RECORD MANAGEMENT TAB
Parameter
Description
Upload All Records to CSV
Upload all records currently in the module.
Upload Unread Records to CSV
Upload unread records currently in the module.
Reset Records
Resets the log indices
Erase Record Storage
Erases the cache of all records
The Record Management tab manages the PLX51-DLplus-232 records. Records can be
downloaded to a (.csv) file format. Options to reset the log indices and erasing the cache are
also available.
Figure 6.8 – Record Management
Table 6.6 – Record Management
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CIP STATISTICS TAB
Statistic
Description
Class 1 Timeout Count
Number of times a Class 1 connection has timed out
Class 1 Forward Open Count
Number of Class 1 Connection establish attempts
Class 1 Forward Close Count
Number of Class 1 Connection close attempts
Class 1 Connection Count
Number of Class 1 Connections currently active
Class 3 Timeout Count
Number of times a Class 3 connection has timed out
Class 3 Forward Open Count
Number of Class 3 Connection establish attempts
Class 3 Forward Close Count
Number of Class 3 Connection close attempts
Class 3 Connection Count
Number of Class 3 Connections currently active
The CIP Statistics tab provides a set of Common Industrial Protocol (CIP) communication
statistics.
Figure 6.9 – CIP Statistics
Table 6.7 – CIP Statistics
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ETHERNET CLIENTS TAB
Statistic
Description
ARP Clients
Number of active clients in the ARP table
TCP Clients
Number of active connections in the TCP client table
EtherNet/IP Clients
Number of active connections in the ENIP client table
Statistic
Description
IP Address
IP address of the client in the ENIP client table
Session Handle
Session handle in the ENIP client table
The Ethernet Clients tab provides a count of EtherNet Client and EtherNet/IP connections.
Figure 6.10 – Ethernet Connection Counts
Table 6.8 – Ethernet Client Counts
Table 6.9 – EtherNet/IP Table
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TCP / ARP TAB
Statistic
Description
MAC Address
MAC address of the client in the ARP Table
IP Address
IP address of the client in the ARP Table
Statistic
Description
MAC Address
MAC address of the client in the TCP Table
Remote Port
Remote TCP port of the client in the TCP Table
Local Port
Local TCP port of the client in the TCP Table
The TCP / ARP tab lists the ARP and TCP/IP information associated with the known MAC addresses
in the network. Parameters include the IP Address, Remote Port number, and Local Port number.
Figure 6.11 – TCP and ARP Table Entries
Table 6.10 – ARP Table
Table 6.11 – TCP Table
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6 RETRIEVING LOGGED DATA FROM
THE PLX51-DLplus-232
6.1 DF1 Packet Capture
The PLX51-DLplus-232 provides the capability to capture the DF1 traffic for analysis.
1 To begin the packet capture of the PLX51-DLplus-232, double-click on the DF1 Packet
Capture selection in the Project Explorer tree.
Figure 6.10 - Selecting DF1 Packet Capture
2 The DF1 Packet Capture window opens and automatically starts capturing all DF1 packets.
NOTE: The PLX51-DLplus-232 keeps a circular buffer of the last twenty DF1
packets. Thus, there may be up to 20 packets in the capture that were received /
sent before the capture was initiated.
Figure 6.11 - DF1 packet capture
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3 To display the captured DF1 packets, the capture process must first be stopped by
Statistic
Description
Index
The packet index, incremented for each packet sent or received.
Time
The elapsed time since the PLX51-DLplus-232 was powered up.
Status
The status of the packet. Received packets are checked for valid DF1 constructs
and valid checksums.
Dirn
The direction of the packet, either transmitted (Tx) or received (Rx).
Src
DF1 node address of the message source.
Dest
DF1 node address of the message destination.
Description
Brief description of the packet, usually the command.
Address
The string representing a PLC data address, where applicable.
Detail
Additional details associated with command.
TNS
Transaction number. Used to match request and reply messages.
Data
The packet’s raw data displayed in space delimited hex.
pressing the STOP button.
Figure 6.12 - DF1 Packet Capture complete
The captured DF1 packets are listed as follows:
Table 6.1 - DF1 Packet Capture fields
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4 The packet capture can be saved to a file for further analysis by selecting the SAVE button
on the toolbar.
5 Previously saved DF1 Packet Capture files can be viewed by selecting the DF1 Packet
Capture Viewer option in the Tools menu.
Figure 6.13 - Selecting the DF1 Packet Capture Viewer
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6.2 Modbus Packet Capture
The PLX51-DLplus-232 provides the capability to capture the Modbus traffic for analysis.
1 To begin the capture of the PLX51-DLplus-232, double-click on the Modbus Packet
Capture selection in the Project Explorer tree.
Figure 6.14 - Selecting Modbus Packet Capture
2 The Modbus Packet Capture window opens and automatically starts capturing all Modbus
packets.
Figure 6.15 – Modbus packet capture
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3 To display the captured Modbus packets, the capture process must first be stopped by
Statistic
Description
Index
The packet index, incremented for each packet sent or received.
Time
The elapsed time since the PLX51-DLplus-232 was powered up.
Status
The status of the packet. Received packets are checked for valid Modbus constructs
and valid checksums.
Dirn
The direction of the packet, either transmitted (Tx) or received (Rx).
Node
Modbus node address of the message destination.
Description
A brief description of the packet, showing the function and register range if applicable.
Data
The raw packet data.
pressing the STOP button.
Figure 6.16 – Modbus Packet Capture complete
The captured Modbus packets are tabulated as follows:
Table 6.5 – Modbus Packet Capture fields
4 The packet capture can be saved to a file for further analysis by selecting the SAVE button
on the toolbar.
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5 Previously saved Modbus Packet Capture files can be viewed by selecting the Modbus
Packet Capture Viewer option in the Tools menu.
Figure 6.17 - Selecting the Modbus Packet Capture Viewer
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6.3 Module Event Log
The PLX51-DLplus-232 logs various diagnostic records to an internal event log. These logs are
stored in non-volatile memory and can be displayed in the PLX50 Configuration Utility or the web
server.
1 To view them in the PLX50 Configuration Utility, select the Event Viewer option in the
Project Explorer tree.
Figure 6.18 - Selecting the PLX51-DLplus-232 Event Log
2 The Event Log window opens and automatically reads all the events from the PLX51-
DLplus-232.
3 The log entries are listed with the latest record at the top. Custom sorting is achieved by
double-clicking on the column headings.
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Figure 6.19 – Module Event Log
4 The log can also be stored to a file for future analysis by selecting the SAVE button in the
tool menu. To view previously saved files, use the Event Log Viewer option under the Tools
menu.
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6.4 Web Server
The PLX51-DLplus-232 provides a web server allowing you to view various diagnostics of the
PLX51-DLplus-232 without the PLX50 Configuration Utility or RSLogix 5000. This includes Ethernet
parameters, system event log, advanced diagnostics, and application diagnostics (DF1
diagnostics).
NOTE: The web server is read-only, no parameters or configuration can be altered
from the web interface.
Figure 6.20 - Web interface
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6.5 Web Reporting
The PLX51-DLplus-232 allows the user to extract logs and draw trends from the module using a
standard web browser as shown below.
Figure 6.1 – Web reporting
The reporting page can be accessed via the standard web interface of the module by entering the
IP address of the module into the browser and clicking on the REPORT button as shown below:
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Figure 6.2 – Web report – access via normal webserver
Alternatively, the user can directly access the Report page by entering the IP address of the
module into the browser followed by the report page url; report.html (eg.
http://192.168.1.xxx/report.html). This allows the user to have full screen access of the trend,
as shown below.
Figure 6.3 – Web report – access directly
The PLX51-DLplus-232 supports five trend objects (or pens) that can be used to trend logged data
over a requested period. Each trend can be set to any of the configured tags (in the PLX50
Configuration Utility). The user can also upload all the records for a requested period to a CSV
file via the web browser.
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Each of the five trends can plot up to 10,000 records. Uploading data to CSV can store up to
1,000,000 records.
NOTE: If a new configuration has been downloaded to the module, the entire web
page will need to be refreshed.
RETRIEVE TREND DATA
When drawing a trend, the user must first select the tags that need to be trended.
1 Click on the drop-down box for each trend and selecting the tag that must be displayed.
NOTE: Selecting “-“ results in no trend being drawn for that specific pen.
Figure 6.4 – Selecting data to trend
2 Once the required tags have been selected, the user will need to select the time period
over which the data must be trended.
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Figure 6.5 – Selecting time period
3 Press the Retrieve Trend Data button.
Figure 6.6 – Retrieve Trend Data
This will start collecting the required data from the PLX51-DLplus-232.
Figure 6.7 – Busy indication
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4 Once the data has successfully been collected it will be trended on the graph as shown
below:
Figure 6.8 – Trends of the selected tags over the requested time period
NOTE: Depending on the amount of data that needs to be collected, it can take a
few minutes to retrieve all the required data (each trend can have up to 10,000
data points).
5 The user can see how many points were plotted for each trend by viewing the Log Counts
below the graph. In the example below, each of the five trends has 256 data points.
Figure 6.9 – Data point count for each trend
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6 The user can also view the local time zone that will be applied to the UTC time retrieved
for each record.
Figure 6.10 – Web browser local time zone
CUSTOMIZE GRAPH AXIS
Each trend will have its own y-axis on the graph. The y-axis can be customized by scrolling down
on the report page and selecting the Manual option for the specific y-axis.
Figure 6.11 – Manual option for y-axis
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Once selected, the max and min values of the current trend will be populated in the textboxes.
The user can enter the max and min range for the specific trend and press the UPDATE #X Y-AXIS
button. This will update the selected y-axis with the current loaded data.
Figure 6.12 – Update Y-Axis
NOTE: Once the user selects to retrieve new data from the PLX51-DLplus-232, the
current selection for the custom y-axis will be removed.
NOTE: By un-selecting the Manual option and pressing the UPDATE #X Y-AXIS
button, the trend y-axis will return to the original scaled values
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Figure 6.13 – Updated Y-Axis
Similarly, the x-axis of the graph can be updated for a specific time range. The user can select the
Manual option on the X-Axis range (as shown below):
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Figure 6.14 – Manual X-Axis selection
Once selected, the start and stop times of the current trend will be populated in the textboxes.
The user can now enter the new custom time and press the UPDATE X-AXIS button.
Figure 6.15 – Updated X-Axis
NOTE: Once the user selects to retrieve new data from the PLX51-DLplus-232, the
current selection for the custom x-axis will be removed.
NOTE: By un-selecting the Manual option and pressing the UPDATE X-AXIS button,
the trend y-axis will return to the original scaled values.
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UPLOAD RECORDS TO CSV FILE
The user can also upload all records for a requested time period to a CSV file. The user can then
save and open this file in MS Excel. To create the CSV file, the user must select the required time
range, followed by pressing the SAVE ALL EVENTS button.
Figure 6.16 – Upload records to CSV file
NOTE: All tag records will be uploaded to the CSV file, and NOT the tags selected
in the trend selections.
NOTE: Up to 1,000,000 records can be uploaded to a CSV file at a time. This can
take several minutes to collect from the PLX51-DLplus-232.
Depending on the web browser, the created CSV file will be displayed in the web browser
window:
Figure 6.17 – Created CSV file
NOTE: The value in brackets () of the file name is the number of records stored in
the CSV file. In the above example, there are 1664 records stored.
The file can be opened in MS Excel and will have the following Columns:
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Parameter
Description
Log Index
The number of the log index in this specific file.
UTC Date Time
The UTC (GMT + 0) time when the record was logged.
Local Date Time
The local time (GMT + local time zone) when the record was logged.
Millisecond
Millisecond when record was logged (50ms resolution).
Tag ID
The Tag ID of the specific tag.
Tagname
The tagname of the specific tag.
Data Type
The data type of the logged record.
Data Value
The data value of the logged record.
Figure 6.18 – CSV file opened in MS Excel
Table 6.2 – CSV file Parameters
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7 JSON CLIENT
Accessing the PLX51-DLplus-232 REST API statistics can be accomplished by using a JSON Client.
These statistics and their definitions can also be found in the PLX51-DLplus-232 Web Reporting
section. In this example, the JSON Client utility is used. You can download a JSON Client sample
from www.prosoft-technology.com.
The PLX51-DLplus-232 webserver supports multiple status-based and record-based queries.
These queries are typically CIP messages encapsulated in a HTTP GET command.
This section provides a number of JSON-based queries to extract the information. The JSON
requests and responses are encapsulated in an HTTP GET or POST command.
7.1 General Status
REQUEST
{
"header": {
"messageType": "reqGenSts"
},
"requestData": {}
}
RESPONSE
{
"header": {
"messageType": "resGenSts"
},
"responseData": {
"Running": 1,
"ConfigValid": 1,
"ContinousLogging": 1,
"Rollover": 0,
"LoggingInhibited": 0,
"LoggingStopped": 0,
“ConfigCRC”:1234,
“LogIndex”:1,
“UnloadIndex”:0,
"DataSource": "EtherNet/IP"
}
}
Data Source Values: EtherNet/IP, DF1, Modbus RTU, Modbus TCP
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7.2 Cache Statistics
REQUEST
{
“header”: {
“messageType”: “reqCacheStats”
},
“requestData”: {}
}
RESPONSE
{
“header”: {
“messageType”: “resCacheStats”
},
“responseData”: {
“totalRecordCount”: 0,
“cacheRecordCount”: 0,
“cachePercentage”: 0
}
}
7.3 Unload Log Index Update
REQUEST
{
“header”: {
“messageType”: “reqUnloadIdxUpdate”
},
“requestData”: {
“unloadLogIndex”: 0
}
}
RESPONSE
{
“header”: {
“messageType”: “resUnloadIdxUpdate”
},
“responseData”: {}
}
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7.4 Cache Records
NOTE: Maximum of 5 records can be read at a time.
NOTE: When a PLX51-DLplus-232 is powered down, a certain amount of
fragmentation can occur within the Non-volatile memory (due to the NAND NV
memory page alignment). This can result in the data to be displayed as 0xFF (eg.
the year will be 65535 for the record – 0xFFFF) in certain log indexes. If this value
is received, ignore that specific log index.
REQUEST
{
“header”: {
“messageType”: “reqCacheRecords”
},
“requestData”: {
“logIndex”: 0,
“recordCount”: 0
}
}
RESPONSE
{
“header”: {
“messageType”: “resCacheRecords”
},
“responseData”: {
“reqLogIndex”: 0,
“currentLogIndex”: 0,
“currentLogUnloadIndex”: 0,
“storage”: “Non-volatile”,
“records”: [
{
“tsUTC”: 1553401472,
“50msTick”: 3,
“tagId”: 12,
“dataType”: “REAL”,
“checksum”: 5555,
“data”: 12.345
},
{
“tsUTC”: 1553401472,
“50msTick”: 5,
“tagId”: 14,
“dataType”: “DINT”,
“checksum”: 4444,
“data”: 98765
}
]
}
}
Storage Values: Non-volatile, RAM
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7.5 Reset Log Indexes
REQUEST
{
“header”: {
“messageType”: “reqLogIndexReset”
},
“requestData”: {}
}
RESPONSE
{
“header”: {
“messageType”: “resLogIndexReset”
},
“responseData”: {}
}
7.6 Get Tag Names
NOTE: Maximum of 4 tag names can be read at a time.
REQUEST
{
“header”: {
“messageType”: “reqGetTagNames”
},
“requestData”: {
“tagNameIndex”: 7,
“tagNameCount”: 2
}
}
RESPONSE
{
“header”: {
“messageType”: “resGetTagNames”
},
“responseData”: {
“tagNameCount”: 2,
“tags”: [
{
“tagDataType”: “REAL”,
“tagId”: 14,
“tagName”: “Outlet Flow 01”
},
{
“tagDataType”: “DINT”,
“tagId”: 15,
“tagName”: “High Level Count”
}
]
}
}
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7.7 Trend Data
NOTE: Maximum of 5 records can be read at a time.
NOTE: When a module is powered down a certain amount of fragmentation can occur
with the Non-volatile memory (due to the NAND NV memory page alignment). This
can result in the data to be displayed as 0xFF (eg. the year will be 65535 for the record
– 0xFFFF) in certain log indexes. If this value is received, ignore that specific log index.
REQUEST
{
“header”: {
“messageType”: “reqTrendData”
},
“requestData”: {
“command”: “Start”,
“duration”: “Last 5 min”,
“startTime”: “2019/03/02 14:22:00”,
“stopTime”: “2019/03/02 14:29:00”,
“extractedTags”: “Tags 1 to 5”,
“tag Idx 1”: 12,
“tag Idx 2”: 19,
“tag Idx 3”: 24,
“tag Idx 4”: 27,
“tag Idx 5”: 28
}
}
RESPONSE
{
“header”: {
“messageType”: “resTrendData“
},
“responseData”: {
“status”: “Last Packet”,
“recordCount”: 2,
“records”: [
{
“tsUTC”: 1553401472,
“50msTick”: 3,
“tagId”: 12,
“dataType”: “REAL”,
“checksum”: 5555,
“data”: 12.345
},
{
“tsUTC”: 1553401472,
“50msTick”: 5,
“tagId”: 14,
“dataType”: “DINT”,
“checksum”: 4444,
“data”: 98765
}
]
}
}
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Command Values: Start, Poll
Duration Values: Last 5 min, Last 30 min, Last hour, Last 6 hours, Last 12 hours, Last day, Last 5 days,
Last week, Last month, Last year, Custom Dates
ExtractedTags Values: Tags 1 to 5, All tags
Status: Last packet, Busy, More Data
7.8 Trend Data UTC
NOTE: Maximum of 5 records can be read at a time.
NOTE: When a module is powered down a certain amount of fragmentation can
occur with the Non-volatile memory (due to the NAND NV memory page
alignment). This can result in the data to be displayed as 0xFF (eg. the year will be
65535 for the record – 0xFFFF) in certain log indexes. If this value is received,
ignore that specific log index.
REQUEST
{
“header”: {
“messageType”: “reqTrendDataUTC”
},
“requestData”: {
“command”: “Start”,
“duration”: “Last 5 min”,
“startUTC”: 1553401472,
“stopUTC”: 1553401672,
“extractedTags”: “All tags”,
“tag Idx 1”: 12,
“tag Idx 2”: 19,
“tag Idx 3”: 24,
“tag Idx 4”: 27,
“tag Idx 5”: 28
}
}
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RESPONSE
{
“header”: {
“messageType”: “resTrendDataUTC”
},
“responseData”: {
“status”: “Last Packet”,
“recordCount”: 2,
“records”: [
{
“tsUTC”: 1553401472,
“50msTick”: 3,
“tagId”: 12,
“dataType”: “REAL”,
“checksum”: 5555,
“data”: 12.345
},
{
“tsUTC”: 1553401472,
“50msTick”: 5,
“tagId”: 14,
“dataType”: “DINT”,
“checksum”: 4444,
“data”: 98765
}
]
}
}
Command Values: Start, Poll
Duration Values: Last 5 min, Last 30 min, Last hour, Last 6 hours, Last 12 hours, Last day, Last 5 days,
Last week, Last month, Last year, Custom Dates
ExtractedTags Values: Tags 1 to 5, All tags
Status: Last packet, Busy
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7.9 Invalid Request Response
NOTE: When a request message was received which was incorrect or had illegal request
parameters the following response will be received.
RESPONSE
{
“header”: {
“messageType”: “resInvalidRequest”
},
“responseData”: {}
}
7.10 Operation
There are multiple ways to extract data from the PLX51-DLplus-232. The following operations are
described in the form of pseudocode examples.
GET TAG DATABASE
Before reading the tags, it is recommended to first read the configuration CRC. If
the tag configuration changes during the tag upload, the upload process can be repeated.
crcStart = reqGenSts().ConfigCRC
tagIndex = 0
Loop
reqGetTagNames(tagIndex,7)
tagIndex = tagIndex +7
crcEnd = reqGenSts().ConfigCRC
if(crcEnd != crcStart) then repeat
GET TREND DATA
The Get Trend Data request extracts up to 5 specific tags, or all of them, between a start and stop
time. The interpolation and record index searched are managed by the PLX51-DLplus-232.
status = reqTrendData(“start”, duration, startDT, stopDT).Status
while(status != LastPacket)
status = reqTrendData(“poll”, duration, startDT, stopDT).Status
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GET CACHE RECORDS
The Get Cache Records request can extract subsets of records by using the record index. This is a
low-level approach where the application is expected to manage the record indices.
The PLX51-DLplus-232 stores records in a 16 million record circular buffer, using a LogIndex and
UnloadIndex. Each time a record is logged, the LogIndex is incremented.
The UnloadIndex is typically controlled by the PLX50 Configuration Utility, and is used to
determine the records that have not yet been uploaded.
To unload records, the application should first read the GeneralStatus to determine the LogIndex,
UnloadIndex and RollOver flag. The records are then read out, 16 at a time.
If the application requires these records to be flagged as “Read”, the application should use the
UnloadLogIndexUpdate command at the end of the read cycle.
If the requirement is to unload all the events, then it is not necessary to consider the
UnloadIndex.
If the RollOver flag is set, then the Unload can start at the LogIndex+1. Otherwise, it starts at
index 0. The unloading stops when the index reaches the LogIndex. If the RollOver flag is set, the
index should rollover after 16777215.
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7.11 Examples
Below are examples extracted from Wireshark on two message request types.
GENERAL STATUS MESSAGE
REQUEST
POST / HTTP/1.1
Host: 192.168.1.230
Connection: keep-alive
Content-Length: 55
Origin: http://192.168.1.230
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64)
AppleWebKit/537.36 (KHTML, like Gecko) Chrome/73.0.3683.103
Safari/537.36
Content-Type: application/json
Accept: */*
Referer: http://192.168.1.230/
Accept-Encoding: gzip, deflate
Accept-Language: en-US,en;q=0.9
{"header":{"messageType":"reqGenSts"},"requestData":{}}
RESPONSE
HTTP/1.1 200 OK
Content-Type: application/json
Content-Length: 364
{"header":{"messageType":"resGenSts"},"responseData":{"Running":
1,"ConfigValid": 1,"ContinousLogging": 1,"Rollover":
0,"LoggingInhibited": 0,"LoggingStopped": 0,"ConfigCRC":
5947,"LogIndex": 4487,"UnloadIndex": 0,"DataSource":
"EtherNet/IP","currentDateTime": "2019/04/30 11:42:51","currentUTC":
1556624571,"serialNum": "35216C41","instance": "Data Logger Plus"}}
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CACHE RECORDS MESSAGE
REQUEST
POST / HTTP/1.1
Host: 192.168.1.230
Connection: keep-alive
Content-Length: 91
Origin: http://192.168.1.230
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64)
AppleWebKit/537.36 (KHTML, like Gecko) Chrome/73.0.3683.103
Safari/537.36
Content-Type: application/json
Accept: */*
Referer: http://192.168.1.230/
Accept-Encoding: gzip, deflate
Accept-Language: en-US,en;q=0.9
{"header":{"messageType":"reqCacheRecords"},"requestData":{"logIndex":
100,"recordCount":4}}
RESPONSE
HTTP/1.1 200 OK
Content-Type: application/json
Content-Length: 720
{"header":{"messageType":"resCacheRecords"},"responseData":{"reqLogInd
ex": 100,"currentLogIndex": 559,"currentLogUnloadIndex": 0,"storage":
"Non-volatile","records": [{"year": 2019,"mon": 4,"day": 30,"hour":
11,"min": 46,"sec": 12,"50msTick": 14,"tagId": 12,"dataType":
"DINT","checksum": 42,"data": 555},{"year": 2019,"mon": 4,"day":
30,"hour": 11,"min": 46,"sec": 12,"50msTick": 14,"tagId":
13,"dataType": "DINT","checksum": 92,"data": 777},{"year": 2019,"mon":
4,"day": 30,"hour": 11,"min": 46,"sec": 12,"50msTick": 14,"tagId":
8,"dataType": "DINT","checksum": 44,"data": 111},{"year": 2019,"mon":
4,"day": 30,"hour": 11,"min": 46,"sec": 12,"50msTick": 14,"tagId":
9,"dataType": "DINT","checksum": 133,"data": 222}]}}
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8 TECHNICAL SPECIFICATIONS
8.1 Dimensions
Below are the PLX51-DLplus-232 enclosure and DIN rail dimensions. All dimensions are in
millimeters.
Figure 8.1 - Module enclosure dimensions
Figure 8.2 - Required DIN dimensions
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8.2 Electrical
Specification
Rating
Power requirements
Input: 10 to 28V DC, (70 mA @ 24 VDC)
Power consumption
1.7 W
Connector
3-way terminal
Conductors
24 to 18 AWG
Enclosure rating
IP20, NEMA/UL Open Type
Temperature
-20 to 70 °C
Earth connection
Yes, terminal based
Emissions
IEC61000-6-4
ESD Immunity
EN 61000-4-2
Radiated RF Immunity
IEC 61000-4-3
EFT/B Immunity
EFT: IEC 61000-4-4
Surge Immunity
Surge: IEC 61000-4-5
Conducted RF Immunity
IEC 61000-4-6
Specification
Rating
Connector
RJ45
Conductors
CAT5 STP/UTP
ARP connections
Max 20
TCP connections
Max 20
CIP connections
Max 10
Communication rate
10/100 Mbps
Duplex mode
Full/Half
Auto-MDIX support
Yes
Table 8.1 - Electrical specification
8.3 Ethernet
Table 8.2 - Ethernet specification
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8.4 Data Cache
Specification
Rating
Max Record Count
16,777,216
Maximum tag count
200
Log criteria supported
Delta change
Heart beat
Tag Triggers
Minimum Log Interval
50 ms
Data Types Supported
BOOL, SINT, INT, DINT, or REAL
Cached Records Non-Volatile
Yes
Log triggers supported
Yes
Data Sources
Logix Tags
DF1 Files
Modbus (RTU and TCP/IP) registers
Specification
Rating
Connector
4-way terminal
Conductor
24 to 18 AWG
Isolation voltage
2.5 kV
BAUD
1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200
Parity
None, Even, Odd
Specification
Rating
Duplex
Full/Half
Error detection
CRC, BCC
Embedded response
Auto, On
Table 8.3 – Data Cache specification
8.5 Serial Port
8.6 DF1
Table 8.4 – Serial Port specification
Table 8.5 - DF1 specification
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8.7 Modbus
Specification
Rating
Supported Ports
Modbus RTU
Modbus TCP/IP
Functions Supported
Read Coils (Function Code 1)
Read Discrete Inputs (Function Code 2)
Read Holding Register (Function Code 3)
Read Input Register (Function Code 4)
Table 8.6 - Modbus specification
8.8 Agency Approvals & Certifications
Please visit our website: www.prosoft-technology.com
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9 SUPPORT, SERVICE & WARRANTY
9.1 Contacting Technical Support
ProSoft Technology, Inc. is committed to providing the most efficient and effective support
possible. Before calling, please gather the following information to assist in expediting this
process:
1 Product Version Number
2 System architecture
3 Network details
If the issue is hardware related, we will also need information regarding:
1 Module configuration and associated ladder files, if any.
2 Module operation and any unusual behavior
3 Configuration/Debug status information
4 LED patterns
5 Details about the serial, Ethernet or Fieldbus devices interfaced to the module, if any.
Note: For technical support calls within the United States, ProSoft’s 24/7 after-hours phone support is available for
urgent plant-down issues. Detailed contact information for all our worldwide locations is available on the following
page.
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Asia Pacific
Europe / Middle East / Africa
Regional Office
Phone: +60.3.2247.1898
asiapc@prosoft-technology.com
Languages spoken: Bahasa, Chinese, English, Japanese,
Korean
REGIONAL TECH SUPPORT
support.ap@prosoft-technology.com
North Asia (China, Hong Kong)
Phone: +86.21.5187.7337
china@prosoft-technology.com
Languages spoken: Chinese, English
REGIONAL TECH SUPPORT
support.ap@prosoft-technology.com
Southwest Asia (India, Pakistan)
Phone: +91.98.1063.7873
india@prosoft-technology.com
Languages spoken: English, Hindi, Urdu
Australasia (Australia, New Zealand)
Phone: +60.3.7941.2888
pacific@prosoft-technology.com
Language spoken: English
Southeast Asia (Singapore, Indonesia, Philippines)
Phone: +60.3.7941.2888
seasia@prosoft-technology.com
Languages spoken: English, Bahasa, Tamil
Northeast & Southeast Asia
(Japan, Taiwan, Thailand, Vietnam, Malaysia)
Phone: +60.3.7941.2888
neasia@prosoft-technology.com
Languages spoken: English, Chinese, Japanese
Korea
Phone: +60.3.7941.2888
korea@prosoft-technology.com
Languages spoken: English, Korean
Regional Office
Phone: +33.(0)5.34.36.87.20
europe@prosoft-technology.com
Languages spoken: French, English
REGIONAL TECH SUPPORT
support.emea@prosoft-technology.com
Middle East & Africa
Phone: +971.4.214.6911
mea@prosoft-technology.com
Languages spoken: Hindi, English
REGIONAL TECH SUPPORT
support.emea@prosoft-technology.com
North Western Europe (UK, IE, IS, DK, NO, SE)
Phone: +44.(0)7415.864.902
nweurope@prosoft-technology.com
Language spoken: English
Central & Eastern Europe, Finland
Phone: +48.22.250.2546
centraleurope@prosoft-technology.com
Languages spoken: Polish, English
Russia & CIS
Phone: +7.499.704.53.46
russia@prosoft-technology.com
Language spoken: Russian, English
Austria, Germany, Switzerland
Phone: +49.(0)1511.465.4200
germany@prosoft-technology.com
Language spoken: German, English
BeNeLux, France, North Africa
Phone: +33(0)5.34.36.87.20
france@prosoft-technology.com
Languages spoken: French, English
Mediterranean Countries
Phone: +39.342.8651.595
italy@prosoft-technology.com
Languages spoken: Italian, English, Spanish
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Latin and South America
North America
Brazil, Argentina, Uruguay
Phone: +55.11.5084.5178
brasil@prosoft-technology.com
Languages spoken: Portuguese, Spanish, English
REGIONAL TECH SUPPORT
support.la@prosoft-technology.com
Mexico
Phone: +52.222.264.1814
mexico@prosoft-technology.com
Languages spoken: Spanish, English
REGIONAL TECH SUPPORT
support.la@prosoft-technology.com
Andean Countries, Central America, Caribbean, Chile,
Bolivia, Paraguay
Phone: +507.6427.48.38
andean@prosoft-technology.com
Languages spoken: Spanish, English
REGIONAL TECH SUPPORT
support.la@prosoft-technology.com
Regional Office
Phone: +1.661.716.5100
info@prosoft-technology.com
Languages spoken: English, Spanish
REGIONAL TECH SUPPORT
support@prosoft-technology.com
9.2 Warranty Information
For complete details regarding ProSoft Technology’s TERMS & CONDITIONS OF SALE,
WARRANTY, SUPPORT, SERVICE AND RETURN MATERIAL AUTHORIZATION INSTRUCTIONS,
please see the documents at: www.prosoft-technology.com/legal
Documentation is subject to change without notice.
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10 INDEX
A
Active Tags, 45
assembly instance, 33
C
Cache Percentage, 45
Cache Records, 45
Certifications, 88
checksum, 24, 41
CIP path, 26
D
Data Logger, 7
Data Source, 23, 25, 44, 45
Data Types, 35, 87
Deleting Tags, 29
Delta Y, 26
DF1, 7, 9, 22, 23, 24, 25, 29, 39, 41, 44, 53, 54, 55, 61, 87
DF1 Source, 29
DF1 specification, 88
DHCP, 12, 15, 16, 17, 18, 20
Diagnostics, 41
dimensions, 85, 91
DIN rail, 13, 85
DIP, 12
E
Electrical specification, 86
Ethernet Bridge, 33
Ethernet connector, 14
Ethernet specification, 86
Ethernet/IP, 27
EtherNet/IP, 18, 26, 27, 50
Event Log, 59
F
firmware upgrade, 22
G
ground (GND), 11
I
input assembly, 38, 44
input voltage, 14
L
LED, 41
LEDs, 41
Logix Source, 26
M
Max ΔT, 26
Memory Schematic, 9
Min ΔT, 26
Modbus, 7, 22, 23, 25, 30, 39, 41, 44, 87, 88
MODBUS, 56, 57, 58
Modbus Source, 30
ModbusRTU, 23, 24, 25, 39
ModbusTCP, 23, 25, 39
N
non-volatile memory, 7, 8, 22, 59
O
owned, 9, 33, 38, 44
P
PLX50 Configuration Utility, 21, 22, 38, 42, 59
Project Explorer tree, 20, 21, 42, 43, 53, 59
R
receive (RX), 11, 14
Record Management, 48
requested packet interval (RPI), 34
Rockwell Automation, 19
RS232, 9, 11, 14, 24, 41
RSLinx, 19
RSLogix, 26, 33, 34, 35, 37, 38, 39, 61
RSLogix 5000, 26, 33, 34, 35, 37, 38, 39, 61
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S
Triggers, 26
Safe Mode, 12
statistics, 42
Status, 42
Tag Browser, 28
Target Browser, 18, 26, 27, 31
Total Records, 45
transmit (TX), 11, 14
T
U
UDTs, 35
Unload Service, 45
User Defined Types (UDTs), 35
W
web server, 42, 61
webserver, 9
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