CTI JANUS User manual

CTI Janus Controller Quick Start Guide (P/N 062-000471) Page 1
CTI JANUS CONTROLLER QUICK START GUIDE
VERSION 5 2021.12.15
Purpose of this Document
This document is designed to assist you in unpacking and initial installation of the CTI Janus Programmable
Automation Controller (PAC). It also describes options for setting the network parameters required for
basic operation.
This document is applicable to all Janus PAC models running firmware V1.20 or later (released June 2021).
For assistance with configuration and operation, we recommend that you download the Janus Controller
Installation and Operation Guide from the CTI web site: www.controltechnology.com/support/manuals/.
Introduction
The CTI Janus PAC is an advanced, high-performance IEC-61131-3 compliant PLC with unmatched
integrated communications capabilities and diagnostic features. The processor provides real-time control
functions, connectivity, data handling, and visualization in one product.
Unpacking the Module
Open the shipping carton and remove the special anti-static bag that contains the module. After
discharging any static build-up, remove the module from the static bag. Do not discard the static bag.
Always use this bag for protection against static damage when the module is not inserted into the I/O base.
CAUTION:
The components on the Janus Controller can be damaged by static electricity discharge.
To prevent this damage, the module is shipped in a special anti-static bag. Static control precautions
should be followed when removing the module from the bag and when handling the printed circuit
board during configuration
Installation
The Janus Controller is shipped with the battery and internal SD card installed. The firmware is pre-loaded
on the SD card and ready for operation.
The Janus Controller must be installed into the first slot in the base (next to the power supply).
Remove power from the chassis. Align the circuit board with the connector next to the power supply. Slide
the controller into the rack until the connector seats. Use the thumbscrews to secure the controller to the
rack.
Apply power to the base power supply. The POWER GOOD LED on the power supply should illuminate,
indicating that power is being supplied to the base connectors.

Page 2 CTI Janus Controller Quick Start Guide (P/N 062-000471)
Startup
The Janus Controller takes about 12-15 seconds to complete the startup sequence. During startup, you
should see a scrolling decimal point in the front panel alphanumeric display.
The Janus CPU automatically assigns a unique Link Local compatible IP Address and Subnet mask during the
startup process. Additional network parameters can be obtained from a DHCP server if available.
When startup is complete, the firmware version is briefly displayed and the active network parameters (IP
Address and Subnet mask in CIDR format) are scrolled across the front panel display.
See ‘Setup’ section below for a description for setting a static IP Address and Subnet mask.
Module Status Indicators
When this is complete, the status indicators should be in the state as shown in the table below:
Indicator
State
Comments
CPU GOOD
ON
If the CPU GOOD LED is OFF, contact CTI Technical
Support.
RUN
OFF
This LED is set ON when the application program is
running in the CPU. It will always be OFF on initial
startup.
ERROR
OFF
This LED should normally be OFF if the battery is
installed and working. The CPU should have a network
address (either by DCHP server or internally generated
Link-Local compatible parameters).
If this LED is blinking and display shows any errors other
than E600 (Battery Low) or E610 (Battery Unavailable)
when the battery in not installed, contact CTI Technical
Support.
Setting Static Network Parameters
The Janus CPU will operate with network settings obtained from a DHCP server or internally generated Link-
Local compatible parameters. However, it is not guaranteed that the same IP Address will always be
available following a power cycle. CTI highly recommends that static network parameters be assigned
before using the Janus CPU.
The Janus CPU offers three different methods for assigning static network parameters: IP Address, Subnet
Mask, and Gateway Address for initial setup or following a configuration reset. You can use any of the
methods described below:
1) Connect to Janus CPU via DHCP-assigned parameters
By default, the Janus CPU will automatically obtain network settings from a Dynamic Host
Configuration Protocol (DHCP) server if available. This allows easy access to the controller web
server for setting a fixed IP Address and configuration parameters.
If a DHCP server is available, the network parameters obtained via DHCP are scrolled on the front
panel display. Your PC should also be able to obtain an IP Address on the same subnet from the
DHCP server, and you are ready to connect to the Janus CPU.
You must connect an Ethernet cable from your PC directly or via network switch to any of the Janus
CPU front panel ports (PORT A, PORT B,PORT C, or PORT D).

CTI Janus Controller Quick Start Guide (P/N 062-000471) Page 3
Make a TCP connection to the Janus CPU web server by entering the DHCP-assigned IP Address
displayed on the Janus CPU front panel into your browser address bar and select ‘Configuration /
Network Settings’ from the web server menu.
Enter the static network parameters into the ‘Primary Subnet Configuration’ table. Press ‘Apply’
button at the bottom of the page to assign new parameters and reset the CPU.
2) Connect to Janus CPU via Link-Local compatible settings
If a DHCP server is not available, the Link Local compatible settings generated by the Janus CPU are
displayed on the front panel. Link-Local settings are displayed only when no other network settings
have been configured and can be identified as an ‘Auto-IP’ by letter ‘A’ preceding the IP Address on
the display.
The Link-Local parameters are assigned as shown below:
IP Address in IPV4 Link-Local range: 169.254.0.0 –169.254.255.255
Subnet Mask: 255.255.0.0 (CIDR 16)
Gateway Address: 0.0.0.0
In this case, you must manually assign an IP Address for your PC Network ‘Local Area Connection’
TCP/IPv4 that is in the Link-Local range shown above and set Subnet Mask = 255.255.0.0.
Connect an Ethernet cable from your PC directly or via network switch to any of the Janus CPU
front panel ports (PORT A, PORT B,PORT C, or PORT D).
Make TCP connection to the Janus CPU web server by entering the Auto-IP Address displayed on
the Janus CPU front panel and select ‘Configuration / Network Settings’ from the web server menu.
Enter the static network parameters into the ‘Primary Subnet Configuration’ table. Press ‘Apply’
button at the bottom of the page to assign new parameters and reset the CPU.
3) Use the SD Card Ethernet Port Setup method
The SD Card Ethernet Port Setup provides an alternate method to specify static network settings
for the controller without requiring an Ethernet connection between your PC and Janus CPU.
This operation requires the following steps:
a) Create a file named ‘cti.ini’ using your favorite text editor (Windows® Notepad works just fine).
The following keywords and associated values must be inserted into this file.
The values must be valid network settings expressed in dotted decimal notation.
Each keyword/value combination must be entered on a separate line. If keywords are
duplicated, only the first entry is processed –the others are ignored.
[NET0]
usingdhcp = false
ip = x.x.x.x
subnetmask = x.x.x.0
gateway = x.x.x.x *
* The ‘gateway’ keyword and associated value is optional. If you don’t want to specify a default
gateway address, you must omit the entire line containing the keyword “gateway”.

Page 4 CTI Janus Controller Quick Start Guide (P/N 062-000471)
Examples:
With Gateway Address: Without Gateway Address:
[NET0] [NET0]
usingdhcp = false usingdhcp = false
ip = 198.18.74.56 ip = 198.18.74.56
subnetmask = 255.255.255.0 subnetmask = 255.255.255.0
gateway = 198.18.74.1
b) Copy the cti.ini file created above to the root directory of a SD card and insert that card into the
front panel SD card slot.
c) Turn off power to the base, remove the controller from the base, set Module Switch 4 to CLOSED
position (and ensure Module Switch 2 is OPEN). Re-install the controller into the base, and
restore power.
d) On power up, the controller enters Port Parameter Setup mode and displays PPSt on the front
panel display. While in this mode, the web server can be accessed using the currently active IP
address. However, the controller will not accept connections from Janus Workbench until the
CPU starts up in normal operating mode (with Module Switch 4 set OPEN).
Next, the controller will attempt to find the ‘cti.ini’ configuration file in the root directory of the
front panel SD card. If cti.ini file is found, the file is then validated to ensure all the required
data is included and correct.
If the required keywords are found and validated, the procedure continues at step (g) below.
e) If any of the following errors occur, PPEr is displayed for 5 seconds indicating a Port
Parameterization Error and the appropriate error (see below) is generated.
If a properly formatted SD card is not inserted into the front panel receptacle:
Error 370 (Front Panel SD Card Not Accessible) is reported.
If the cti.ini file cannot be found in the SD card root folder:
Error 250 (Front Panel SD Card –Update File Not Found) is reported.
If the cti.ini file does not contain the required keywords/values:
Error 260 (Front Panel SD Card - Invalid Update File) is reported.
f) If one of these errors exists, the firmware will repeatedly attempt to perform this operation as
long as the controller remains in this mode. This allows you to remove, modify, and insert the
SD card without having to reset the controller. Each time you insert the SD card, the operations
in steps (e-f) are repeated.
g) If the operation successfully completes, the parameterization data is saved in the Janus CPU for
the next controller startup and PPdn indicating Port Parameterization Done is displayed on the
front panel.
Note: The cti.ini file on the SD card is renamed cti.bak to prevent the same network settings
from accidentally being used to configure another Janus CPU.
h) To return to normal operation, turn off power to the base, remove the controller from the
base, set Module Switch 4 to the OPEN position, re-install the module into the base, and restore
power.
i) On power up, the firmware performs subnet validation on the saved values. If they pass, those
values are written into system parameter data. A ‘Changed Network Settings’ event is
generated in the Event Log.

CTI Janus Controller Quick Start Guide (P/N 062-000471) Page 5
See Chapter 4 in the Janus Controller Installation and Operation Guide for details on Janus CPU
configuration options.

Page 6 CTI Janus Controller Quick Start Guide (P/N 062-000471)
Development Software
Janus Workbench Software (Order# 2500P-WB-USB) is required for application development and
configuration of communications for the Janus Controllers. Contact CTI for more information. Contact
information is listed at the bottom of this document.
Firmware Update
Prior to using the Janus Controller, you should verify that the controller firmware is current. The firmware
version number displayed in the Product Information page of the embedded web server.
The current firmware version is available on the CTI web site at the following link:
http://www.controltechnology.com/support/software-revision/ .
See Chapter 6 in the Janus Controller Installation and Operation Guide for information on updating
firmware.
Technical Assistance
If you need assistance from CTI please email CTI Technical Support at [e-mail] or
contact call us at 865-584-0440 or 800-537-8398 (USA only).