Please note: The LDx006P0 is not natively designed to communicate directly with a PLC. Serial ASCII is used to write values to Counter A. A common mistake is attempting to use an LDxA05P0(analog input) model which does not have the ability to write values to input A. 

APPLICABLE PRODUCTS

•  DA10D0C000000000
• LD2006P0
• LD4006P0
• Crimson 3.2 Software - Crimson 3.2 - Download and installation instructions
• PLCs using Modbus RTU / Modbus TCP

PRE-REQUISITES

Before beginning this procedure, ensure the following:

• Crimson 3.2 software is installed on a programming PC
• Access to the DA10 via:
  • USB, Serial, or SD card (for initial download)
• PLC communication settings are known:
  • Baud rate
  • Parity
  • Node address
  • Register map
• Proper RS-485 wiring is installed:
  • A(+) / B(-) correctly wired
  • Termination resistors installed (120 ohm each end)
• User has access/permission to modify PLC and DA10 configurations

IN THIS ARTICLE

This article covers the following configuration steps:

• Create and Configure DA10 in Crimson
• Configure PLC Communication and Data Mapping
• Download, Test, and Verify Operation

Create and Configure DA10 in Crimson

Table of Content

• Create project
• Set device type
• Configure network

Step 1

Create a new Crimson database

Step 2

Select DA10 hardware platform

Step 3

Configure network settings

Instructions for Step 1

• Open Crimson 3.2
• Select File → New

• 

Instructions for Step 2

• When prompted, select DA10D as the target device
• Confirm device selection before proceeding

• 

Instructions for Step 3

• Navigate to Communications → Network
• Set:
  • IP Address (if Ethernet is used)
  • Subnet Mask
  • Gateway (if required)

  • 

Note: Ethernet may not be available until you have downloaded the configuration to the DA10. 

Note: A helpful tool when navigating the Crimson 3.2 software is the Balloon Help

Configure PLC Communication and Data Mapping

Table of Content

• Add driver
• Set communication parameters
• Create and map tags

Step 1

Add PLC communication driver

Step 2

Configure communication parameters

Step 3

Create and map data tags

Instructions for Step 1

• Go to Communications
• Select the correct port (serial RS232/485 or ethernet)
• Click Pick under a protocol slot
• Select:
  • Modbus Master (most common for PLC polling)
  • Or appropriate PLC driver

Instructions for Step 2

Set communication parameters to match the PLC:

For Serial Communications to PLC

• Driver: Modbus Universal Master
• Baud rate (e.g., 9600 or 19200)
• Data bits: 8
• Parity: None/Even
• Stop bits: 1

• Node address

  

   

Ensure exact match with PLC settings.

For Ethernet Connections

• Set IP address of PLC

• Ensure your Ping Holding Register is set properly (Should be the first 16-bit integer in register. if having trouble, set to 0 and test)

• Unit number needs to be assigned to match PLC settings.

• 

Instructions for Step 3

• Navigate to Data Tags
• Create tags for each PLC value by selecting new tag(numeric)
• Select name for tag by right clicking Tag 1 and choosing "Rename".
• Then from Source dropdown, select LD
• Select 4 Holding Register from menu that pops up

•  

  Set the holding register address in the element field. 

  *Please be sure to confirm all settings before moving forward.

Examples:

• Flow_Rate
• Machine_RPM
• Total_Count
• Assign each tag to a PLC register:

Example:

• 40001 → Machine_RPM
• 40002 → Flow_Rate

• Set correct data types:

  • Integer (16-bit)
  • Float (32-bit)

   

Download, Test, and Verify Operation

Table of Content

• Download configuration
• Verify communications
• Troubleshoot

Step 1

Download configuration to DA10

Step 2

Verify communication and data flow

Step 3

Validate display operation

Instructions for Step 1

• Connect to DA10 via USB or Serial
• Click Link → Download
• Wait for successful transfer

Note: First-time setup typically cannot use Ethernet.

Instructions for Step 2

• Use Crimson diagnostics to monitor tags
• Confirm:
  • PLC data is being received
  • Tag values are updating in real time

Instructions for Step 3

• Verify LDx006P0 display updates correctly
• Compare displayed values with PLC values
• Confirm:
  • Correct scaling
  • Stable readings

ADDITIONAL INFO (Optional)

• RS-485 must be wired in a daisy-chain topology, not star
• Always verify:
  • A(+) / B(-) polarity
  • Termination resistors (120Ω at ends)
• Common issues:
  • Incorrect register addressing (off by 1)
  • 16-bit vs 32-bit mismatch
  • Baud rate mismatch
• Recommended tools:
  • Modbus test software
  • Serial analyzer
  • Loopback testing
• Related articles:
  • Modbus communication troubleshooting
  • RS-485 wiring best practices
  • Scaling values in Red Lion devices