Serial Settings

Sepasoft MES Module Suite

Serial Settings

The Instrument Interface Module is perfect for serial devices – such as analyzers, measurement gauges, barcode readers and many more – where values are sent when the operator presses the send button or a request is sent to the device to read the values. The serial support built into the Instrument Interface Module includes polling the device for new data, receiving unsolicited data from the device, or requesting the new data from the device based on an event in Ignition. It gracefully handles timeouts and other communication issues that are common with serial communications and also includes the flexibility of controlling every byte sent or received using script.

This page configures the serial port communications settings of this Instrument Interface.

Serial Settings Configuration

General

Enable Serial

If checked, these port settings will be applied to the Serial Controller component when this Instrument Interface is assigned to its Instrument Interface Name property.

Port Settings

Baud Rate	Serial Communication baud rate. Select from the following: Baud 110 Baud 150 Baud 300 Baud 600 Baud 1200 Baud 2400 Baud 4800 Baud 9600 Baud 19200 Baud 38400 Baud 57600 Baud 115200 Baud 230400 Baud 460800 Baud 921600
Data Bits	Serial communication data bits. Select from the following: DATA BITS 5 DATA BITS 6 DATA BITS 7 DATA BITS 8
Parity	Serial communication parity. Select from the following: NONE EVEN ODD MARK SPACE
Stop Bits	Serial communication number of stop bits. Select from the following: Stop Bits 1 Stop Bits 2
Hand Shaking	Serial communication flow control methods. Select from the following: NONE CTS DTR CTS RTS DSR DTR XON XOFF
Timeout	The default number of milliseconds to wait while reading data.
Character Encoding	Character encoding of the data.
Clear Buffer Before Sending	If checked, clears the receive buffer before sending data.
Correct CRLF	If checked, corrects any combination of end of line characters to carriage return (CR) and line feed (LF).

Request Handling

Enable Polled Requests

If checked, the port will be polled at the requested rate.

Request Polling Rate

The rate in milliseconds to poll the port.

Solicited Request Script

The script to run for each polled request.

When writing scripts you can use the "event" object to reference methods in the Serial Controller component that this Instrument Interface is assigned.

Code Snippet

Copy Code

Code

import time
port = event.getSerialController()
port.clearBuffer()
port.writeString("Ar")
time.sleep(0.5)
port.writeString("As")
time.sleep(0.5)
event.setReceivedData(port.readString())

Accept Unsolicited Request

If checked, the port will can accept requests without being solicited.

Sepasoft MES Module Suite