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Safety Isolated RS-232 Interface
The RS-232 interface of the 4314 Series Igniter Testers is an ultra-safe isolated serial Interface. The
digital signals are transmitted across the isolation barrier using iCoupler technology. The interface
provides a safe way to communicate with the device via a computer or PLC and allows the transfer of
single reading or continues transmission of data.
Connecting the Alpha 4314 via RS232
The RS232 interface capabilities:
The RS232 interface provides a point-to-point connection between two items of equipment such as a
computer and the Alpha 4314. There are some parameters you need to set on both sides. Once you have
set these parameters, you can communicate with the Alpha 4314 through the RS232 interface.
•
Baud rate: 115200 baud.
•
Parity bit: none.
•
Data bit: 8 bits.
•
Stop bit: 1 stop bit.
•
Data flow control: none.
Notes for RS232 installation
The Alpha 4314 is a DCE (Data Channel Equipment) device with a 9-pin D-type shell RS232 connector
located on the rear panel. Table 1 shows the 9-pin connector (Female) with its pin number assignments.
Pin #
Pin Function
1
No Connection
2
Receive Data (RxD) (input)
3
Transmit Data (TxD) (output)
4
No Connection
5
Signal Ground
6
No Connection
7
No Connection
8
No Connection
9
No Connection
Table 4 -
Connector Pin Configuration
Checking Connections
To test whether the RS232 connection is working, you can send a command from the computer. For
instance, using a terminal program send the query command
Idn?
The device should return the Manufacturer, model number, firmware version in the following format:
Valhalla Scientific Alpha4314 V2.0
If you do not receive a proper response from the Alpha 4314, please check if the power is on, and all
cable connections are active.
