Opto22 - Resources & Tools

Watch Window does not show whitespace characters in strings

Knowledge Base - KB89076 - 8/20/2020

When viewing string variables in a watch window, leading and trailing whitespace characters are missing. However, these characters are visible in the string’s hex view.

Long delay entering Debug Mode

Knowledge Base - KB89027 - 8/20/2020

If your strategy contains many subroutines (approximately 20 or more) and most of those subroutines makes calls to other subroutines, it may take a long time (around 30 seconds or more) between clicking...more

PAC Display runtime crashes

Knowledge Base - KB89022 - 8/20/2020

PAC Display Runtime terminates (crashes) at random times, with or without operator interaction.

Edit Instructions dialog box doesn't show or save changes to variable types

Knowledge Base - KB88987 - 8/20/2020

In PAC Control, if you change the type for a variable, then open the Edit Instructions dialog box for any instruction that contains that variable, the dialog box does not show or save that variable after the type change.

Opto Browser Configurator may not start

Knowledge Base - KB88948 - 8/20/2020

When you try to start the Opto Browser Configurator, if it cannot find the browser database, it may not start or report an error message when it tries to start.

PAC Control CLI operator "/cdf" may generate pop-up window

Knowledge Base - KB88638 - 8/20/2020

While using the PAC Control command line interface (CLI) tool with the /cdf operation, some strategies may trigger PAC Control to display a pop-up window, which must be acknowledged before the operation can continue.

Random blocks appear in PAC Display windows

Knowledge Base - KB88936 - 8/20/2020

Random blocks of color may appear in PAC Display windows when the window contains graphics that blink.

PAC Control appears to be stuck while regenerating reference counts

Knowledge Base - KB87786 - 8/20/2020

As PAC Control regenerates reference counts (with a strategy open in PAC Control Config mode, click Tools > Regenerate Reference Counts), a dialog with the name of the chart may show a "Not Responding" message and appear to be stuck.

Can't Add Supported Versions of BACNet Server to CODESYS Application

Knowledge Base - KB89094 - 7/20/2020

GRV-EPIC-PR1 firmware version 2.0.0 added support for CODESYS BACNet SL versions 1.2.1.0 to 1.5.1.0. However, the Opto 22 Library Package for CODESYS Development System version 2.0.0.0, which supports...more

Move I/O Unit to Numeric Table [Ex] Commands May Not Retrieve All Analog Inputs/Outputs

Knowledge Base - KB88789 - 7/22/2020

With a couple of PAC Control commands, some or all analog input/output values may not be stored to the destination table. This does not occur on the initial download of a strategy; however, if...more

9-bit Addressing Mode Does Not Work

Knowledge Base - KB88995 - 7/22/2020

Channels May Randomly Return QNANs

Knowledge Base - KB89041 - 6/25/2020

A GRV-IRTD-8 channel configured for 1000 Ohm Pt 3-wire (°C) may randomly return QNAN values when the input is between -1.0 and 0.0 degrees C.

Large Arrays Written to Numeric Tables Incorrectly

Knowledge Base - KB88804 - 7/22/2020

When you write a large number of elements (greater than approximately 100) to a numeric table, the elements may be written in the incorrect order and some of the values may repeat.

groov Manage Doesn't Correctly Display PAC Control REST API Swagger Configuration File

Knowledge Base - KB89053 - 7/22/2020

When you go to the PAC Control REST API reference (from groov Manage Home page, click Info and Help > REST APIs > PAC Control for groov EPIC), Swagger reports an error: "Parser error on...more

Can't Communicate with PAC Controller Even Though groov Manage Shows Running

Knowledge Base - KB89074 - 7/22/2020

You may be unable to communicate with the PAC Controller on the groov EPIC processor (for example, to download and run a strategy or connect with PAC Display), even though groov Manage shows that...more

I/O Point Mismatch Errors Generated by Some Discrete Channels on RIO

Knowledge Base - KB89102 - 7/22/2020

In PAC Control, if you configure a channel on a GRV-R7-MM1001-10 with some discrete signal types and features, PAC Control may show one or more "I/O point mismatch" errors in the error...more

Writes to Digital Packed Data Area of memory map fail; discrete output not modified

Knowledge Base - KB89099 - 9/18/2020

If you write to the Digital Packed Data Area of the memory map (0xF1001800–0xF100183F), the writes fail and the discrete output states are not modified.

Get and Restart Measurement commands don't restart measurement correctly

Knowledge Base - KB88608 - 9/18/2020

Some PAC Control commands are supposed to restart the measurement at the start of the next pulse or period. However, with this issue, if an on-pulse, off-pulse, or period is in progress, these commands...more

groov Manage Shows "Server Offline" When Configuring GRV-ITR-12

Knowledge Base - KB88909 - 6/25/2020

In groov Manage, when you are configuring a GRV-ITR-12 to 3K Thermistor curve, groov Manage displays the red "Server Off Line - Data May Be Stale" banner.

REST API Calls Become Unresponsive

Knowledge Base - KB89052 - 7/9/2020

When an HTTP request terminates abnormally, the SNAP PAC RESTful API may become unresponsive and result in an error code (often a -5, failure).

Quadrature Counter Feature Not Set on GRV-IDCIFQ-12 Module

Knowledge Base - KB89087 - 7/22/2020

In a PAC Control strategy, if you add a GRV-IDCIFQ-12 module to an EPIC I/O unit, and add a channel on the module with the Quadrature Counter feature, the feature is not set on the EPIC I/O unit. When...more

Unpredictable Behavior With CODESYS Controller

Knowledge Base - KB89079 - 7/22/2020

If you enable the CODESYS Controller, you may see unpredictable behavior or services may become unreachable.

Quick Start not shown after creating first user

Knowledge Base - KB89066 - 9/18/2020

After creating the first user on a groov EPIC (GRV-EPIC-PR1) or groov RIO (GRV-R7-MM1001-10), the user is supposed to stay logged in and taken to the Quick Start page. Instead, the user is logged out and returned to the log in page.

Require Password Change option doesn't work

Knowledge Base - KB89064 - 9/18/2020

In groov Manage or groov View, when you create a new user ID and check the "Require Password Change" option, the user can log in without being prompted to change their password.

Enable Communication to I/O Unit Command Does Not Enable EPIC I/O Unit

Knowledge Base - KB89056 - 7/22/2020

If an error causes a groov EPIC I/O unit to go offline, the Enable Communication to I/O Unit command may not re-enable it, even if the error condition has been cleared.