From cf1497e3bba45ddc3b31cf9768954248bedc0bc1 Mon Sep 17 00:00:00 2001
From: chenluhua1980 <Chenluhua@qq.com>
Date: 星期三, 14 一月 2026 16:03:21 +0800
Subject: [PATCH] 1.修复以下问题:Only-1 Job 支持:isProcessJobsEmpty()/validate 决定了当前实现只支持单个 PJ/CJ。Host 如果按标准一次下多 PJ 或在运行中追加 PJ,会被拒绝但无明确回应,容易引起 Host/设备状态脱节。

---
 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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