|
|
|
|
| RUI/Gateway & Modbus® TCP |
| |
|
|
|
| Configuration & Programming Example |
| ||
|
|
|
|
| Using KEPServerEX 4.0 |
| |
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 | ||||||
| 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: | ||||||
|
|
|
|
|
|
|
|
|
| Gateway |
| Enable | Modbus® |
|
|
|
| Instance |
| Gateway | Offset |
|
|
|
|
| Instance |
|
| ||
|
|
|
|
|
|
| |
|
| 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 |
|
|
| Further explanation of these prompts and their associated enumerated values will follow. | ||||||
| * The RUI allows for a maximum entry of 9999 due to the limitations of the 7 segment display. To enter | ||||||
|
| an offset > 9999 |
| ||||
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 | ||||||
| Communications between the computer (PC) running KEPServerEX and the | ||||||
| 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 | ||||||
| controls (1 - 4) over Standard Bus; thereby establishing a live and active communications link | ||||||
| between dissimilar networks. |
| |||||
Watlow |
|
|
|
| |||
1241 Bundy Blvd |
|
|
|
| |||
Winona, MN 55987 |
|
|
|
| |||
Telephone: |
|
|
| ||||
© 2008 Watlow Electric Mfg Co | 2 | FM 4/08 | |||||
