User Manual

9.614 SatService-Temp-232

This page describes the device driver and the device window for the SatService-Temp-232 device. This device reads the temperature value from the Temp-RS232 temperature sensor.

Device window pages

The following table shows which device window pages are available with this individual device type. Tool-bar functions not mentioned here are described at the general description of device windows .

--- Shows the actual temperature value.
--- The faults page.
--- The device info page.
--- The maintenance page. The configuration parameters described below are set at this page.

Configuration parameters

At the maintenance page of the device window there are a couple of configuration parameters which must be set to make the software talk to the alarm monitoring input at the PLC.

parameter	description
address	Leave this field empty, the Temp-RS232 sensor does not require a device address.
Serial	Remember to set the line parameters for the serial interface to 9600,N,8,1 , no handshaking.

Remarks

The sensor is powered through the handshake lines of the serial interface. If you need to extend the interface cable, either use an off the shelf 9-pole extension cable or at least connect the GND, TxD, RxD RTS and DTR lines.
The sensor is not polled by the software, it autonomously sends a temperature value every second. For best results, set the IDLE time for this interface to 200ms in the VLC setup dialog.

Variables defined by this device driver

name	type	flags	range
info.driver	TEXT	R/O	StringRange R/O
lowLevel.cmd	TEXT		StringRange
lowLevel.reply	TEXT	R/O	StringRange R/O
faults.99	ALARM	R/O	AlarmFlagRange R/O (Communication)
faults.commstat	TEXT	R/O	StringRange R/O
info.type	TEXT	R/O	StringRange R/O
info.port	TEXT	R/O	StringRange R/O
info.frame	TEXT	R/O	StringRange R/O
temperature	FLOAT	R/O	DoubleRange R/O (0.0 .. 0.0)
hiThreshold	FLOAT	SAVE	DoubleRange (0.0 .. 0.0)
loThreshold	FLOAT	SAVE	DoubleRange (0.0 .. 0.0)
faults.01	ALARM	R/O	AlarmFlagRange R/O (Temperature LO threshold)
faults.02	ALARM	R/O	AlarmFlagRange R/O (Temperature HI threshold)