Fisher ROC Plus Serial

EFM Suite Get Fisher ROC Plus Serial as a part of this suite. Learn More Fisher ROC Suite Get Fisher ROC Plus Serial as a part of this suite. Learn More Oil and Gas Suite Get Fisher ROC Plus Serial as a part of this suite. Learn More

Product Overview

The Fisher ROC Plus Serial device driver provides data exchange between OPC/DDE clients and ROC Plus protocol devices. 

  • Supports Ethernet Encapsulation
  • Supports Automatic Tag Generation
  • Operator Identification
  • Time synchronization on EFM poll, user-specified interval, or time of day
  • Modem Support
    • Automatic Dial Configuration
    • Multiple Phone Number Management
  • Read, Write, and Auto Tag Generation of User Program data (User Defined Points)​
  • Supports Advanced Statistics Tags, including _CommFailures, _ErrorResponses, and more
  • Includes a pointer rollback to retrieve lost data from a device
  • ROC Plus
  • ROC809
  • ROC809L
  • ROC827
  • ROC827L
  • English
  • DDE Format CF_Text and AdvancedDDE
  • NIO Interface for iFIX
  • OPC .NET Service (OPC .NET) Version 1.00
  • OPC Alarms and Events (OPC AE) Version 1.10
  • OPC Data Access (OPC DA) Versions 1.0a, 2.0, 2.05a, and 3.0
  • OPC Unified Architecture (OPC UA) Clients
  • SuiteLink and FastDDE for Wonderware



  • Fixed an issue where reads could starve writes when communicating to multiple devices in the same channel.



  • Removed non-inclusive terms out of respect for users of our software.



  • Fixed an issue where a late-arriving Opcode 135 response could get applied to the wrong point.       



  • Added a pointer rollback to retrieve lost data from a device. If the device’s cache pointer is valid, rollback will be applied to cache pointer, otherwise the rollback will be applied to the current device pointer.



  • Corrected EFM exporter output for Meter Type and Calculation Method using polled device settings. 



  • Fixed an issue where communication could fail immediately after initiating communication with the device.



  • Updated the parameter size for parameter #0(Device Tag) in Point Type 177's address table from 10 bytes to 40 bytes.


  • Added additional options for time synchronization:
    • Only allow time synchronization when the difference between device and system time exceeds a certain threshold.
    • Perform a time synchronization on an EFM poll.



  • Disabled time synchronization when data collection is disabled.
  • Added missing gas attribute mappings for H2, HE, CO, and AR.
  • Enabled point types 93, 94 for gas models.



  • Meters are now represented in the Project Tree View to improve visibility and editing.
  • Fixed an issue where EFM data for avg_c8, avg_c9, and avg_c10 was not exported to CSV.
  • Corrected column mapping of EFM data for n-Pentane and neo-Pentane.



  • Resolved a Time Sync issue where, if no reads are active; only the first four (4) devices successfully synchronize.
  • Enhanced the driver to allow UDP tags to use the correct data type set (not default). This allows the data type of these tags to be manually modified.



  • Added support for Advanced Statistics Tags, including _CommFailures, _ErrorResponses, and more.
  • The driver now includes the #n syntax when auto-generating tags for similarly named point types in point type tables to avoid duplicate tag names. This may change the default name for some auto-generated tags from previous versions.
  • Changed the alarm state from OFF to On for string events.
  • Resolved an issue where attempting to read a tag from a non-responsive device could falsely cause a timeout when reading the next tag on a different device.
  • Resolved an issue where reading multiple tags in the same point type logical could result in two separate read requests rather than one.
  • Corrected mappings for liquid temperature high and low limits to EFM exports.



  • The driver no longer performs a time synchronization operation on startup when the Time Sync Method is Absolute.
  • Added support for reading and writing to user tables using Opcodes 10 and 11.
  • Added the ability to ignore extra bytes received on the wire that are not part of the ROC communications. These bytes are sometimes added by radio modems and other networked equipment.
  • Enhanced the drivers to support Opcode 180. Enabled per device, this allows the driver to read multiple TLP and UDPs per read request.



  • Spaces are no longer allowed in liquid and gas meter names.



  • Fixed a server deadlock that could occur when launching a client that had 100,000 or more tags configured for a device.



  • Removed the potential for a hang when a client accesses tags containing UDP point types.



  • Enhanced the driver to cache the pointer file to disk so that it will not re-poll for data already collected on start-up.



  • Added the new 809L and 827L models with support for Liquid EFM and export to Flow-Cal V7. The new models support EFM configuration, hourly history, daily history, batch, alarms, and events upload.
  • Added new ROC800L point types. This required the addition of a new "T_LONG" data type.
  • Fixed an issue where Default data type was always returned for UDP tags, even if the UDP data type was known by the server. This could cause writes that occurred before an initial read of the UDP tag to fail.
  • Fixed an issue where Gas EFM data would not upload if the meter being uploaded was preceded by a segment containing no TLP mappings.


  • Enhanced the Fisher ROC Plus Serial Driver to support User-Defined Points. This includes support for Dynamic Tag creation as well as Online and Offline Automatic Tag Generation.
  • Added support for following point ranges:
    • Lower UDP range: Points 60 through 78
    • Upper UDP range: Points 196 through 254
  • Increased the maximum number of supported channels to 1024.
  • Resolved an issue where an EFM history upload from a device with five or less points configured in a history segment would fail due to framing error.
  • Added support for point type 177, Wireless HART.


  • Fixed an issue where automatic tag generation would not create Point Types 101 through 109.
  • Fixed an issue where automatic tag generation created point types with incorrect Logical Addresses.
  • Added support for Point Types 98-x.53 through 98-x.60.
  • Added a Set/Clear indication to the beginning of the alarm strings exported via the EFM Exporter Plug-In.


Improved the driver's EFM data collection performance and efficiency when intermittent communication errors occur with the connection to the EFM data source. The optimizations are automatically handled in the driver: no project configuration changes were required in the driver UI.



  • Added Electronic Flow Measurement (EFM) Support
  • Updated the driver with the new Connection Sharing feature.
  • Enhanced the driver to consume the extra bytes that may be received following a valid frame.



Added support for the use of legacy tag names as part of Automatic Tag Generation. This enhancement was made to resolve a change introduced in the 5.8 release where tag formats created via Automatic Tag Generation were different than previous versions. This tag format issue only affects users who upgraded to version 5.8 and triggered tag regeneration.

For new installations of Fisher ROC Plus driver (server version V5.9 and up), the default setting for this checkbox is 'checked' so legacy tag names are used.


Added support for Channel Serialization, Inter-Device Delay, and RTS Line Control. Updated the Operator Identification tab in Device Properties to be more consistent with ROCLINK configuration software. Consolidated Tag Import Settings under a single tab in Device Properties.


  • Increased the channel limit to 256.
  • Fixed an issue caused when a controller responded with a data length greater than the data length supported by the protocol. This would cause a buffer overflow which could cause the driver to stop working. Added verification of data length returned by controller.


  • Increased the maximum devices per channel from 32 to 255.


  • Fixed an issue with unhandled exception in the driver.

Features when part of the EFM Suite

  • Support for Gas and Liquid EFM
  • EFM Configuration and Mapping
    • History, including hourly and daily Gas Chromatograph data
    • Batch
    • Liquid Product
    • Alarms
    • Events