From d2df50ab05a9d9a85a4b735786fe3f2b6e00186e Mon Sep 17 00:00:00 2001
From: chenluhua1980 <Chenluhua@qq.com>
Date: 星期一, 26 一月 2026 22:19:17 +0800
Subject: [PATCH] 1.已把空指针和防护都补上了:创建消息失败直接返回并删除 action;spooling/发送/序列化都会跳过空消息并记录错误,避免再因 m_pSendMessage 为空导致崩溃或写出坏缓存。

---
 SourceCode/Bond/BondEq/CPLC.cpp |    8 +++++++-
 1 files changed, 7 insertions(+), 1 deletions(-)

diff --git a/SourceCode/Bond/BondEq/CPLC.cpp b/SourceCode/Bond/BondEq/CPLC.cpp
index 7a7afcf..3c4d175 100644
--- a/SourceCode/Bond/BondEq/CPLC.cpp
+++ b/SourceCode/Bond/BondEq/CPLC.cpp
@@ -242,7 +242,7 @@
 
 bool CPLC::isConnected()
 {
-	return m_pChannel->isConnected();
+	return m_pChannel != nullptr && m_pChannel->isConnected();
 }
 
 int CPLC::readWord(MC::SOFT_COMPONENT softComponent, unsigned int addr,
@@ -269,6 +269,12 @@
 	return m_pChannel->writeWord(softComponent, addr, value, funOnWrite);
 }
 
+int CPLC::writeDWord(MC::SOFT_COMPONENT softComponent, unsigned int addr,
+	int value, ONWRITE funOnWrite)
+{
+	return m_pChannel->writeDWord(softComponent, addr, value, funOnWrite);
+}
+
 int CPLC::writeData(MC::SOFT_COMPONENT softComponent, unsigned int addr,
 	const char* pszData, unsigned int length, ONWRITE funOnWrite)
 {

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