Watlow Electric RUI/Gateway Manual de usuario

RUI/Gateway & Modbus®TCP

Configuration & Programming Example

Using KEPServerEX 4.0

Watlow

1241 Bundy Blvd

Winona, MN 55987

Telephone: 507-494-5656

Configuring the EZ-ZONE®RUI/Gateway

1. This White Paper is not meant to be an exhaustive step-by-step discussion in configuring the

RUI/Gateway, for this work has already been done in two other published EZ-ZONE®user

manuals. For instance, if needing assistance in setting the RUI/Gateway IP (Internet Protocol)

address or if you are simply looking for general information pertaining to Modbus®TCP as it is

used with EZ-ZONE®controls point your internet browser to the Watlow website

(http://www.watlow.com) and download the EZ-ZONE®PM Communications user manual and

or the EZ-ZONE®RUI/Gateway user manual.

2. Prior to looking closer at the RUI/Gateway configuration prompts let’s first take a look at the

network in use.

RUI/Gateway & Modbus®TCP

Configuration & Programming Example

Using KEPServerEX 4.0

Watlow

1241 Bundy Blvd

Winona, MN 55987

Telephone: 507-494-5656

3. Some notables regarding the graphic above. In the steps that follow we are going to focus on

four of the prompts shown: a. Modbus®Enable (Mb;E) b. Gateway instance (GTW)

c. Gateway enable (du;En) d. Modbus®offset (M;oF)

4. Notice in the graphic in step 2 that the RUI/Gateway has 2 “Com” instances. Com instance 1

will always be Standard Bus and Com instance 2 will always be the user protocol of choice, in

this case, Modbus®TCP. This protocol when ordered also comes standard with EtherNet/IPTM

(Industrial Protocol) as well. When setting the prompts for Com instance 2 you must first

enable Modbus®TCP, EtherNet/IPTM or both. For the purpose of this paper the prompt

displayed as Mb;E will be set to yes (Modbus®TCP enabled). If a step-by-step example is

needed to fully configure the RUI/Gateway refer to step one and download the appropriate

user manual.

5. To implement the network shown in step two the following settings will need to be entered:

Further explanation of these prompts and their associated enumerated values will follow.

6. After completing the configuration as shown above as well as your Com 1 settings for the

Standard Bus side this will complete the RUI/Gateway configuration.

7. Note that KEPServerEX is one of many software packages on the market today that include

the Modbus®TCP driver; this procedure is for KEPServerEX.

8. The following screen shots capture a step-by-step procedure to successfully establish

Communications between the computer (PC) running KEPServerEX and the EZ-ZONE®

RUI/Gateway (Com instance 2) over Modbus®TCP. Once communications are established

over Com instance 2 we will then look further at the KEPServerEX configuration that will

enable communications through the RUI/Gateway to Com instance 1 and the EZ-ZONE®PM

controls (1 - 4) over Standard Bus; thereby establishing a live and active communications link

between dissimilar networks.

Gateway

Instance

Enable

Gateway

Instance

Modbus®

Offset

GTW = 1 Du;En = Yes M;oF = 0

GTW = 2 Du;En = Yes M;oF = 5000

GTW = 3 Du;En = Yes M;oF = *10000

GTW = 4 Du;En = Yes M;oF = *15000

* The RUI allows for a maximum entry of 9999 due to the limitations of the 7 segment display. To enter

an offset > 9999 EZ-ZONE®configurator software must be used.

RUI/Gateway & Modbus®TCP

Configuration & Programming Example

Using KEPServerEX 4.0

Watlow

1241 Bundy Blvd

Winona, MN 55987

Telephone: 507-494-5656

9. Provide a name for the channel.

10. In this example the device driver selected will be “Modbus Ethernet”.

RUI/Gateway & Modbus®TCP

Configuration & Programming Example

Using KEPServerEX 4.0

Watlow

1241 Bundy Blvd

Winona, MN 55987

Telephone: 507-494-5656

11. Select the appropriate hardware (network adapter) used on the network.

12. Next, select the appropriate write optimization method.

RUI/Gateway & Modbus®TCP

Configuration & Programming Example

Using KEPServerEX 4.0

Watlow

1241 Bundy Blvd

Winona, MN 55987

Telephone: 507-494-5656

13. The next selection allows for multiple masters on the network. When multiple masters exist on

a network talking (reading & writing) to the same slaves, possible conflicts between masters

can exist when performing a write operation.

14. Click finish to complete this part of the configuration.

RUI/Gateway & Modbus®TCP

Configuration & Programming Example

Using KEPServerEX 4.0

Watlow

1241 Bundy Blvd

Winona, MN 55987

Telephone: 507-494-5656

15. Once the channel configuration is complete it is now time to configure a device

(RUI/Gateway).

16. Select the Modbus®driver.

RUI/Gateway & Modbus®TCP

Configuration & Programming Example

Using KEPServerEX 4.0

Watlow

1241 Bundy Blvd

Winona, MN 55987

Telephone: 507-494-5656

17. Recall that in steps 1-3 it was said that there are other configuration steps that need to be

addressed that are not covered in this paper. As an example of those parameters that need to

be set on the RUI/Gateway we see the IP address coming into focus. Enter the Modbus®

TCP/IP address of the RUI/Gateway.

18. Set timing according to your network requirements.

RUI/Gateway & Modbus®TCP

Configuration & Programming Example

Using KEPServerEX 4.0

Watlow

1241 Bundy Blvd

Winona, MN 55987

Telephone: 507-494-5656

19. If communications fail between KEPServerEX and RUI/Gateway stop polling device.

20. Generate unique input / output (I/O) tags for the RUI/Gateway.

RUI/Gateway & Modbus®TCP

Configuration & Programming Example

Using KEPServerEX 4.0

Watlow

1241 Bundy Blvd

Winona, MN 55987

Telephone: 507-494-5656

21. Use the defaults for port number and IP protocol.

22. Use the defaults as shown.

RUI/Gateway & Modbus®TCP

Configuration & Programming Example

Using KEPServerEX 4.0

Watlow

1241 Bundy Blvd

Winona, MN 55987

Telephone: 507-494-5656

23. The graphic below shows the default Modbus®word order which also represents the default

Modbus® word order for the RUI/Gateway (Low/High).

24. Coil access is not used with the RUI/Gateway. The number of registers shown limits

KEPServerEX in the maximum number of registers which can be read at a time.

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