补充漏传文件

2 years ago · e775e1a5b9
parent e792799564
commit e775e1a5b9
1 changed files with 6 additions and 3 deletions
--- a/Cigarette/PLC/PLCDevice.cpp
+++ b/Cigarette/PLC/PLCDevice.cpp
@ -7,7 +7,7 @@

 extern SysConf g_sys_conf;

-modbus_t * g_modbus;		//Modbus TCP
+modbus_t * g_modbus = NULL;		//Modbus TCP

 bool PLCDevice::init_plc(PLCDevice* PLCptr)
 {
@ -29,8 +29,11 @@ bool PLCDevice::init_plc(PLCDevice* PLCptr)
 }
 bool PLCDevice::disconnect_plc(void)
 {
+	if(g_modbus)
+	{
 		modbus_close(g_modbus);
 		modbus_free(g_modbus);
+	}
 	return true;
 }
 int PLCDevice::write_bit_2_plc(int addr, int value)