From 8aad1b413cfa23fccb0a2a83ace5d77e0c7667e7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=D0=91=D1=8B=D1=87=D0=BA=D0=BE=D0=B2=20=D0=90=D0=BD=D0=B4?=
 =?UTF-8?q?=D1=80=D0=B5=D0=B9?= <andrey@signalmodelling.ru>
Date: Mon, 26 Sep 2016 17:18:01 +0000
Subject: [PATCH] git-svn-id: svn://db.shs.com.ru/pip@272
 12ceb7fc-bf1f-11e4-8940-5bc7170c53b5

---
 src/io/piconnection.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/io/piconnection.cpp b/src/io/piconnection.cpp
index 904dfb2a..58c79de9 100755
--- a/src/io/piconnection.cpp
+++ b/src/io/piconnection.cpp
@@ -861,6 +861,7 @@ int PIConnection::write(PIIODevice * dev, const PIByteArray & data) {
 		piCoutObj << "Null Device!";
 		return -1;
 	}
+	if (!dev->isOpened()) return -1;
 	if (!dev->canWrite()) {
 		piCoutObj << "Device \"" << dev->constructFullPath() << "\" can`t write!";
 		return -1;