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[Bug]: Cannot invoke "Object.getClass()" because "value" is null

Status: Open.

#2511 In apache/plc4x;

· fulviosuperga opened on Apr 8, 2026

[Feature Request]: Go - support s7 reading

goPull requests that update Go codePull requests that update Go code

S7https://plc4x.apache.org/users/protocols/s7.htmlhttps://plc4x.apache.org/users/protocols/s7.html

Status: Open.

Feature

#2508 In apache/plc4x;

· DubbaThony opened on Mar 31, 2026

[Bug]: Vulnerability analysis reports com.fasterxml.jackson.core:jackson-core:2.19.2 with GHSA-72hv-8253-57qq

javaPull requests that update Java codePull requests that update Java code

Status: Open.

Bug

#2496 In apache/plc4x;

· makerMcl opened on Mar 18, 2026

[Feature Request]: show the name of PLC in logged warnings

javaPull requests that update Java codePull requests that update Java code

Status: Open.

Feature

#2495 In apache/plc4x;

· makerMcl opened on Mar 18, 2026

[Feature Request]: Java Canopen - Sending NMT Commands

awaiting-feedbackThis label is applied when an issue has been opened and we need more information from the issuer.This label is applied when an issue has been opened and we need more information from the issuer.

CANopenhttps://plc4x.apache.org/users/protocols/canopen.htmlhttps://plc4x.apache.org/users/protocols/canopen.html

javaPull requests that update Java codePull requests that update Java code

Status: Open.

Feature

#2468 In apache/plc4x;

· freelancer1845 opened on Feb 26, 2026

[Bug]: Cached Modbus TCP hiccup when another connection is established

javaPull requests that update Java codePull requests that update Java code

Modbushttps://plc4x.apache.org/users/protocols/modbus.htmlhttps://plc4x.apache.org/users/protocols/modbus.html

Status: Open.

Bug

#2418 In apache/plc4x;

· JoelGaechter opened on Jan 12, 2026

[Bug]: NullPointerException

javaPull requests that update Java codePull requests that update Java code

S7https://plc4x.apache.org/users/protocols/s7.htmlhttps://plc4x.apache.org/users/protocols/s7.html

Status: Open.

Bug

#2394 In apache/plc4x;

· JordanFromChina opened on Dec 15, 2025

[Bug]: some asymmetry in tag-handling

javaPull requests that update Java codePull requests that update Java code

S7https://plc4x.apache.org/users/protocols/s7.htmlhttps://plc4x.apache.org/users/protocols/s7.html

Status: Open.

Bug

#2388 In apache/plc4x;

· DvonHolten opened on Dec 9, 2025

[Bug]: can't connect modbus-rtu

javaPull requests that update Java codePull requests that update Java code

Modbushttps://plc4x.apache.org/users/protocols/modbus.htmlhttps://plc4x.apache.org/users/protocols/modbus.html

Status: Open.

Bug

#2383 In apache/plc4x;

· HeyChangSha opened on Dec 9, 2025

[Feature Request]: better error message when data-content doesn't mach data-spec in S7

javaPull requests that update Java codePull requests that update Java code

S7https://plc4x.apache.org/users/protocols/s7.htmlhttps://plc4x.apache.org/users/protocols/s7.html

Status: Open.

Feature

#2377 In apache/plc4x;

· DvonHolten opened on Dec 4, 2025

How does modbus-tcp read the string type defined by the plc?

javaPull requests that update Java codePull requests that update Java code

Modbushttps://plc4x.apache.org/users/protocols/modbus.htmlhttps://plc4x.apache.org/users/protocols/modbus.html

Status: Open.

Task

#2307 In apache/plc4x;

· yancyang1989-gif opened on Oct 15, 2025

[Bug]: Connection is not possible - Unable to find endpoint matching

javaPull requests that update Java codePull requests that update Java code

OPC-UAhttps://plc4x.apache.org/users/protocols/opcua.htmlhttps://plc4x.apache.org/users/protocols/opcua.html

Status: Open.

Bug

#2302 In apache/plc4x;

· fuzolan opened on Oct 9, 2025