INCON-M84/M86/M86R Manual

6.25 Temperature Restriction of Central Units (ECU)

The main control unit ECU can operate normally in a temperature below 50°C. The user can use the PLC to read the temperature of the temperature sensor in the ECU controller and infer the ambient temperature. When the ambient temperature exceeds 50°C, an alarm message will be issued.

Ambient temperature = controller temperature sensor sensed temperature –17°C

PLC program example: (alarm will be given when the ambient temperature exceeds 45°C)

#include "plc.h"

#include "smachine.h"

static unsigned short *para;

static long *longPara;

static char *msgVersion = "Temperature_sensor";

static char *msgTemperature = "ALARM! Temperature is very high";

#define setting_Temperature                        (para[0])

#define Inside_Temperature                        (para[1])

#define Outside_Temperature                        (para[2])

void PLCAPI plcOpen(Status & sts, PlcBlock & plc,unsigned short *PlcData, long *LongPlcData){

   plc.versionText = msgVersion; // assign version data string

   para = PlcData;               // get plcdata pointer

   longPara = LongPlcData;       // get long data pointer

      setting_Temperature = 45;

}

void PLCAPI plcRun(Status & sts, PlcBlock & plc){

   plc.errorMessage = (char *) 0;        

   plc.vto0.bit.emgsp = 0;

   Inside_Temperature = sts.temperature;

   Outside_Temperature = Inside_Temperature - 17;

   if(Outside_Temperature>=setting_Temperature)

   {

        plc.vto0.bit.emgsp = 1;

        plc.errorMessage = msgTemperature;

   }

}

among them,

setting_Temperature is an alarm when the ambient temperature exceeds this setting.

Inside_Temperature is the temperature sensed by the temperature sensor in the CNC controller.

Outside_Temperature infers the ambient temperature by using the temperature sensed by the temperature sensor.