Yamato WBV4A User manual

INSTRUCTION MANUAL
FOR
Wi-Fi NETWORK BRIDGE
MODELS WBV4A / WBV4B / WBV4C
- Third Edition -
Rev 1.3a
Thank you for purchasing the “VS4 Wi-Fi Network Bridge”. This
device enables remote communication with a PC or mobile
device and allows remote equipment operation, temperature
monitoring and recording (Data Logger function).
This device works exclusively with Yamato VS4 and VS6 (on
VS4 mode) controller available on mechanical convection
equipment models DVS/DKN/ADP/DP/FO/IC

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FCC STATEMENT
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1) This device may not cause harmful interference.
(2) This device must accept any interference received, including interference that may cause undesired operation.
Any changes or modifications not expressly approved by the party responsible for compliance could void the user’s
authority to operate the equipment.
Please notice that if the FCC identification number is not visible when the module is installed inside another device,
then the outside of the device into which the module is installed must also display a label referring to the enclosed
module. This exterior label can use wording such as the following: “Contains FCC ID: 2AHMR-ESP07S” any similar
wording that expresses the same meaning may be used.
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This
equipment should be installed and operated with a minimum distance of 20cmbetween the radiator & your body.
This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.

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TABLE OF CONTENTS
1 INTRODUCTION..........................................................................................................................................................4
2 INSTALLING THE Wi-Fi BRIDGE ON A DKN-xxx oven..................................................................................................5
1. VS-4 Wi-Fi Bridge modules: ..................................................................................................................................5
2.1.1 Power Supply and RS485 to TTL converter module installation................................................................5
2.1.2 Control and RF module installation ........................................................................................................... 6
3 Connecting the bridge to a Wi-Fi network ................................................................................................................7
2. Choosing a Wi-Fi access point. .............................................................................................................................7
3. Connecting to a Wi-Fi Access Point for the first time...........................................................................................7
4 Accessing the Wi-Fi Bridge.........................................................................................................................................8
4.1 Testing Wi-Fi connectivity..........................................................................................................................8
4.2 Wi-Fi Bridge’s Home page (Main Menu)..................................................................................................10
4.2.1 Differences between WBV4 models A, B and C.......................................................................................10
4.3 Commands available on the Command Line interface............................................................................10
4.3.1 Getting Oven status: command ‘12’........................................................................................................10
4.3.2 The “Nickname” command......................................................................................................................11
4.3.3 Restart: Command ‘00’............................................................................................................................11
4.3.4 Wi-Fi Reset command: ‘13’......................................................................................................................11
4.3.5 Bridge information command: ‘14’..........................................................................................................11
4.3.6 Bridge Locate commands: ‘ID on’, ‘ID off’ ...............................................................................................11
4.3.7 Read VS-4 Register command: ‘RABC’ (models A and B).........................................................................11
4.3.8 Write VS-4 register: command ‘WABCnnnnn’ (models A and B) ............................................................11
4.3.9 Saving an Oven program into a file on the Wi-Fi Bridge command ‘PnS’................................................12
4.3.10 Loading a program file into Oven: Command ‘PnL’.................................................................................12
4.3.11 Starting Fixed Temperature operation remotely. Command ‘SFT ttt’ (models A and B) ........................12
4.3.12 Starting a Program remotely. Command ‘RUN np’ (models A and B) ....................................................12
5 LoGGING oven temperature (Data Logger function)...............................................................................................13
5.1 “Log [nn]” command................................................................................................................................13
5.2 Viewing/Retrieving the log files:..............................................................................................................14
6 The File Editor:.........................................................................................................................................................15
6.1 Standard file names and descriptions: ....................................................................................................15
6.2 Working with files....................................................................................................................................16
6.3 Uploading a file from a PC. ......................................................................................................................17
7 Updating the Firmware............................................................................................................................................19
8 Remote Operations..................................................................................................................................................20
8.1 Remote Operations landing page ............................................................................................................20
8.2 Starting a Fixed temperature Operation. ................................................................................................21
8.3 Working with Programs ...........................................................................................................................21
8.3.1 Viewing a program’s temperature profile ...............................................................................................22
9 Remote operations Web interface using Node Red backend. ................................................................................23

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TABLE OF FIGURES
Figure 1: DKN wiring diagram...............................................................................................................................5
Figure 2: Control module placement....................................................................................................................6
Figure 3: Wi-Fi selected ........................................................................................................................................7
Figure 4: Wi-Fi Selection.......................................................................................................................................7
Figure 5: New-DKN AP ..........................................................................................................................................7
Figure 6 - Authentication screen ..........................................................................................................................8
Figure 7 - Wi-Fi Bridge Main Menu: model A ......................................................................................................9
Figure 8 - Wi-Fi Bridge Main Menu models B and C.............................................................................................9
Figure 9 -Log status query Figure 10 –Setting log function........................................................................13
Figure 11 - Log files.............................................................................................................................................14
Figure 12: JavaScript editor page........................................................................................................................15
Figure 13: working with files...............................................................................................................................16
Figure 14: Choose file button .............................................................................................................................17
Figure 15: OS file browser...................................................................................................................................17
Figure 16: the Upload button .............................................................................................................................18
Figure 17: verifying the upload...........................................................................................................................18
Figure 19 - Firmware update page......................................................................................................................19
Figure 20 - Firmware file selection .....................................................................................................................19
Figure 21 - Firmware uploading..........................................................................................................................19
Figure 22 - Remote Operations page..................................................................................................................20
Figure 23 - Fixed temperature operation ...........................................................................................................21
figure 24: Program Temperature profile plot.....................................................................................................22
Figure 25: Program data file ...............................................................................................................................22
Figure 26: node-red home screen ......................................................................................................................23
Figure 27: Node-red code...................................................................................................................................23
Figure 28: PROGRAM mode dashboard..............................................................................................................24
Figure 29: fixed temp dashboard........................................................................................................................24
Figure 30: Status dashboard...............................................................................................................................24

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1INTRODUCTION
Summary
- This device (software and hardware) adds a Wi-Fi interface to any Yamato products that use a VS-
4, VS-6 operating in VS-4 mode, or CR5A Planar controller board. Examples include all DKN series
ovens and FO series muffle ovens. It enables operators and managers to remotely interact with an
oven located anywhere on a provisioned local network (or the internet).
- Oven remote operations/monitoring/logging can be done securely by using a PC or Smart phone
connected to same network as the Bridge, either with a web browser accessing the built in pages on
the WBV bridge or by customizing your own web pages and accessing the bridge using its provided
API.
- All functionality present on current VS-4 RS485 communication interface (OP-19) is also available
through the Wi-Fi bridge but in a more user-friendly way: The low level RS-485 serial
communication protocol is encapsulated into Web Socket packets over TCP/IP, which is supported
by all Internet web browsers and other IoT platforms like IBM's Node-Red. No need to calculate
checksums, delay times, etc. The bridge does all that.
- In addition, extra information can be stored in the Wi-Fi bridge and retrieved remotely using any
web browser remotely. Ex: Temperature logs for any past date.
- The software API (Application Programming Interface) adds convenient functions like Program
Upload/download from a PC, in-browser Program editing /save back. Real Time Status monitoring,
data logging, etc. Because it is built on top of HTTP/Web socket server standards, adding even more
functions to the final application is easy (for an HTML / JavaScript programmer, that is).
- The Wi-Fi Bridge and API should also work on CR5A equipped ovens “as-is” and they can be ported
to VS-5 and other Yamato controllers running Modbus with minimum effort, saving customer
application development and deployment time as the remote control and monitoring User Interface
would be the same for all ovens.
- Thousands of Wi-Fi bridges (and ovens) can co-exist on the same network. Each one gets its own
‘network’ name automatically assigned by the Wi-Fi bridge device based on its Network MAC
address, which is unique by definitions. Ex: A Wi-Fi bridge with MAC address A6:55:F3:1A:2B:3C will
assign itself the name "WBV-2B3C". Traditionally, all devices with an Ethernet interface (Wi-Fi or
wired) should have a label on the unit indicating its MAC address. The WBV4 Wi-Fi bridge is no
different. A locator function makes it easy to locate one particular Oven in a sea of ovens: an user
can issue a “ID ON” command to a Wi-Fi bridge and it starts blinking its bright Yellow LED, making it
easier to spot.

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2INSTALLING THE WI-FI BRIDGE ON A DKN-XXX OVEN
1. VS-4 Wi-Fi Bridge modules:
The Wi-Fi Bridge is implemented as two interconnected modules: One module is installed inside the oven, next
to the Planar board, and another module is installed outside the oven, next to the Option Terminal Block
located on the right side of the oven. To install the module inside the oven, first make sure AC power cable is
disconnected from main Power and Main circuit breaker is set to Off.
2.1.1 Power Supply and RS485 to TTL converter module installation
The Power supply/RS485 module has two harnesses and one USB type A female connector: The AC power
harness is terminated two female receptacles (blue or Pink color). Those receptacle should be inserted on
vacant positions of Terminal Blocks TM1, labeled “1” and “2”, The two wire communication harness should be
connected to VS-4 CN3, pins 3 and 4. If you received a unit with a shielded cable on a 4 pin header block, plug
this connector on VS4 connector CN3 so that the coaxial cable “sits” above CN-3 pins 3 and 4, not pins 1 and 2.
If your device has a two wire connector, the Black wire should be aligned to pin 4 of CN3, while the lighter color
wire (white or yellow) should be on pin 3. The supplied USB “A” to Micro USB 6’ cable should be connected to
the power Supply module on the “A” side. The Micro USB end of the cable should be routed to the outside of
the oven enclosure and connected to the Control and RF module. Remove the extra metal cover plate located
next to the Option Terminal block and use that opening to string the cable out. See figure 1.
Figure 1: DKN wiring diagram
Power supply /
RS485 module
AC harness

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2.1.2 Control and RF module installation
The control and RF module contains a microcontroller and a 2.4 GHz b/g/n Wi-Fi radio. It needs to be placed
outside of the oven enclosure to increase Wi-Fi communications range (antennas don’t work well inside
shielded metal boxes.) Connect this module to the cable coming from the Power supply module and attach it
to the side or top of the oven.
This module has a magnetic base that should be used to keep the module attached to the oven’s metal
chassis. Best performance can be achieved by placing the Wi-Fi module on top, or on the right side face near
the top and close to the oven door, with the antenna pointed up. Avoid spots that get unusually hot (ex:
don’t place the unit near the exhaust ports).
Figure 2: Control module placement
External antenna

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3CONNECTING THE BRIDGE TO A WI-FI NETWORK
2. Choosing a Wi-Fi access point.
Although the Wi-Fi Bridge has a powerful radio, it conforms to international standards for EMI emissions,
which limit the maximum radio power that can be used. That being said, the maximum recommended distance
between the Wi-Fi Bridge and the Wi-Fi access point it will connect to is 50 meters on an unobstructed area.
Walls and other large metal barriers will reduce the Wi-Fi range. Ideally, the Wi-Fi Bridge should be placed on
top of the oven.
IMPORTANT: In order to use the Temperature Logging function and to evaluate its License status,
the Wi-Fi Bridge must have access to a Network Time Server (ntp) on the internet. If the device is
not allowed to connect to “ntp://us.pool.ntp.org” or “ntp://ntp1.aliyun.com”(Chinese builds)
another time server on the local network must be provided by the DHCP server.
3. Connecting to a Wi-Fi Access Point for the first time.
To configure the Wi-Fi Bridge to connect to an Access point, the following procedure should be used:
If there is no Access Point name pre-programmed on the Wi-Fi Bridge, or if it cannot connect to a previously
configured Access Point, the bridge enters Wi-Fi Setup mode: It starts its own Access point and activates its
bright Red LED light. The installer should use a PC or cell phone and connect it to the Wi-Fi bridge’s Access
Point, with SSID “WBV-nnnn”. The value of ‘nnnn’ can be found on a sticker placed on the Wi-Fi Bridge itself.
After connecting to the Bridge’s Access Point, open a web-browser and navigate to http://192.168.4.1. A
configuration web page will be displayed. Click “Configure Wi-Fi” to see a list of detected Wi-Fi networks.
Select the correct one for your installation and enter the Wi-Fi password. Click “Save”. The Bridge turns its
Access point OFF, reboots and try to connect to the new Access point. If connection fails, the bridge resets and
re-enable its Internal AP. If connection is successful, the Bridge will light itself Yellow and then Green.
FIGURE 5: NEW-DKN AP
FIGURE 3: WI-FI SELECTED
FIGURE 4: WI-FI SELECTION

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4ACCESSING THE WI-FI BRIDGE
4.1 Testing Wi-Fi connectivity
On a computer or smart-phone connected to the same local network as the Wi-Fi Bridge, navigate to
Http://WBV-nnnn/ or http://WBV-nnnn.local/ .NOTE: Some Wi-Fi access points and Routers do not allow
clients to broadcast its mDNS or NetBIOS names. If you can’t find your Wi-Fi bridge after it is showing a Green
color LED, ask your IT person to find out the IP address of the WBV device and use it to access the bridge (ex:
http://123.123.123.123/ and also ask for the WBV-nnnn be added to the local DNS server. Once the Bridge
gets an IP address it will always try to use that same IP, even after Power off.
Before the Main Menu screen is displayed, an authentication pop-up appears. It asks for Username and
Password information. For now, the Use name is fixed at “WBVuser” and password is “Yamato”. After
entering these credentials, the Main Menu screen should be displayed. There, you can easily go to the local
File Editor tool, see temperature log charts, update the firmware or navigate to the Remote Operations page.
Just click one of the available buttons. Use the command line field to enter pre-defined commands to the
Bridge and see results in the window immediately below it. They are case insensitive (typing “help” is same as
typing “HELP”, “T” = “t”, etc. The “help” command will display the available commands for the firmware
version you have on that device.
FIGURE 6-AUTHENTICATION SCREEN

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FIGURE 7-WI-FI BRIDGE MAIN MENU:MODEL A
FIGURE 8-WI-FI BRIDGE MAIN MENU MODELS BAND C