JNIOR Knowledge-Base Overview

Written on: October 26, 2022 9:28 am

This is the JNIOR Knowledge-base.  Here you will find a collection of articles that will help you learn or trouble shoot the JNIOR.

If you find there is information we should add then please get in touch with us.

Name Version Release Date Size MD5
JANOS - UPD v2.3 Feb 03 2023 954.6 KB a1b9bcde0a4768bfdcfbc11704c06634
Series 4 All-In-One Update Project v2.3 Feb 03 2023 1.8 MB 9308e8af6b59c480a3a75ff43158ab40
Core JANOS Update Project v2.3 Feb 03 2023 1.1 MB 46faa801012faeae4f4b1310e18706c8
JANOS Release Notes v2.3 Jan 25 2023 447.5 KB eee5c466e41038127aa4a37f5c67a294


JNIOR, a Network I/O Resource utilizing the JAVA™ platform, is a cost effective automation controller that communicates over a network using TCP/IP via an Ethernet Port or via its serial port. The JNIOR is a general-purpose automation controller and I/O device that is easily configurable for controlling and monitoring your equipment or process via the built-in web pages, by enabling the built-in software applications, interaction with an application running on another computer, or by adding your own applications.

Currently there are 4 different Models of the Series 4 JNIOR, each very similar to one another with a few differences.

JNIOR Model Catalog Number I/O Serial/DMX Ports
410  JNR-100-004B 8 inputs 8 outputs 1 AUX Port, 1 COM Port
(COM Port RS-485/RS-232 compatible)
412  JNR-200-004B 4 inputs 12 outputs 1 AUX Port, 1 COM Port
(COM Port RS-232 compatible)
414  JNR-300-004B 12 inputs 4 outputs 1 AUX Port, 1 COM Port
(COM Port RS-232 compatible)
412DMX  JNR-200-004D 4 inputs 12 outputs 1 DMX 5-pin Output Port (allows DMX control)
1 COM Port (COM Port RS-232 compatible)
Each JNIOR Model links to their web page, where more detailed information can be found for them (like their data sheets)

Powering Your JNIOR

The JNIOR uses a 2-piece terminal connector system for all power and I/O wiring connections allowing for easy installation and/or removal of the JNIOR.  Additional installation information and drawings are provided on our website.

The JNIOR can be powered with 12 to 24 volts AC or DC. An optional, wall transformer (AC power converter) for North American outlets is available from INTEG that can be used for converting 120/240 VAC to 12 VDC @ 1 amp. International models are also available as Euro and UK plugs.

The Power Connector is located along the upper left edge of the JNIOR. Note that this is a 4-pin connector. If numbered from one (1) through four (4) from left to right power is always connected to positions 2 and 3 (middle two connectors). The polarity is irrelevant although it is recommended that the positive (+) lead be connected to position 2.

The left two positions (1 & 2) are internally connected together, as are the right two positions (3 & 4). This is to facilitate the interconnection of the supplied power to other devices and circuits such as input or output devices. If you power the I/O circuits with your JNIOR power supply, please make sure the power supply is sized appropriately.

WARNING: Do not connect the transformer leads both to Positions 1 & 2 or both to positions 3 & 4. This will short the transformer and possibly damage it and/or the JNIOR. Always use a fused/protected power source.

When a proper power source is connected and turned on the leftmost LED adjacent to the power connector will glow BLUE continuously. The LED to the right may glow ORANGE for several seconds. This orange STATUS LED remains on through most of the JNIOR boot sequence. Later it will flash whenever an external connection is made to the JNIOR via the Ethernet port.

Wiring JNIOR I/O

JNIOR Inputs

The JNIOR is equipped with optically isolated digital inputs. Each digital input can accept AC or DC voltage sources in the 0 – 30 V range. An LED associated with each digital input displays the current electrical status of the input (off or on). Isolation of each digital input allows you to connect input signals to different voltage sources without the addition of isolation devices. The input voltage must be greater than 2 VDC for the input to register as “on” and then less than 1 VDC to register as “off”. A typical connection would be as follows:

JNIOR Outputs

The JNIOR is equipped with Relay Outputs with most of them being a Form A SPST relay (1 Normally Open Contact) and two of them being a Form C SPST relay (1 Normally Open Contact and 1 Normally Closed Contact – jumper selectable as to which one is available on the JNIOR terminals by removing the lid and changing the jumper setting. Normally Open is the default.) Each relay output is independent and isolated from the other relay output. Each relay contact rating is 1A @ 24VDC and the voltage source must be in the range of 5 – 30V AC or DC. A typical connection would be configured as follows:

Setting the JNIOR’s IP

Starting with JANOS 2.0, the JNIOR is shipped with DHCP enabled for dynamic setting of the JNIOR IP address by a network server. More information is here on finding your JNIOR’s IP address.

If DHCP does not work on your network, then there are two ways to configure your JNIOR IP settings:

  • By using the JNIOR Support Tool (Beacon tab) provided on our website at the following link: https://www.integpg.com/jnior-support-tool/. You can use JNIOR Support Tool to configure the JNIOR’s IP by right clicking the JNIOR, and selecting Configure -> IP Configuration. A dialog will appear to edit the JNIOR’s IP after that.



  • Via the RS232 Serial Port and a command line window available via the JNIOR Support Tool: http://www.integpg.com/support/jnior/. You can use this command line to set the IP by doing the ipconfig -a IP -m MASK command, replacing ‘IP’ with the IP you want for the JNIOR, and ‘MASK’ with the subnet you want for the JNIOR. For example, on a private network the IP address may be something like A common mask would be The command would then look as follows:


ipconfig -a -m

JNIOR Web Pages

The JNIOR Series 4 contains the JNIOR web page which is a web page used for a variety of functions including monitoring and manually controlling the I/O, changing various configuration items, opening a Telnet/Console session and several other functions. The JNIOR web page works with Microsoft Internet Explorer, Google Chrome, Fire Fox and other browsers.

PLEASE NOTE: The dynamic web page requires a ‘modern web browser’ which is defined as Internet Explorer 10 or greater, Google Chrome or Firefox.

You can launch the JNIOR web page from the Beacon tab in the JNIOR Support Tool by right-clicking on your JNIOR and going to Tools – Open web page or by manually entering the JNIOR IP address in your browser address line. To manually launch the JNIOR web page, open your browser and in the address line of the browser type your JNIOR IP address or serial number, for example: or jr616010235

After the JNIOR web page is loaded, the user is asked to login with a valid username and password. You can use the default username (jnior) and default password (jnior).

The JNIOR web page will be launched in your browser as shown below.

By | Updated On February 6, 2023 1:10 pm | No Comments | Categories:


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