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RUI/Gateway & DeviceNet

TM

Configuration & Ladder Logic Example

Using an Allen-Bradley CompactLogix PLC

Watlow
1241 Bundy Blvd
Winona, MN 55987
Telephone: 507-494-5656
© 2007 Watlow Electric Mfg Co 5

4/08

10. After clicking next above, the software will associate an icon to this device, if there was none

found in the previous step it will use a default icon to graphically represent this node. Click
next to proceed.

11. Clicking next above completes the registration process where the question mark is removed

and replaced with the icon of choice for node 7 (Watlow RUI/Gateway).

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Содержание Gateway & DeviceNet

Страница 1: ... com and download the EZ ZONE PM Communications Manual and follow the procedure defined in the DeviceNetTM chapter 2 Once the gateway communications parameters for DeviceNetTM are set according to your network requirements connect the gateway into the network and do the following a Run RSLinx software and configure the driver of choice b Run RSNetWorx software 3 As shown below within RSNetWorx sof...

Страница 2: ...Bundy Blvd Winona MN 55987 Telephone 507 494 5656 2007 Watlow Electric Mfg Co 2 4 08 display as shown below In this particular case node 7 RUI Gateway appears with a question mark because it has not yet been registered on the network 5 To register any given node on the network click on Tools and then EDS Wizard ...

Страница 3: ...gic Example Using an Allen Bradley CompactLogix PLC Watlow 1241 Bundy Blvd Winona MN 55987 Telephone 507 494 5656 2007 Watlow Electric Mfg Co 3 4 08 6 Select Register an EDS file 7 Register a single file and then click browse to locate its location ...

Страница 4: ...one 507 494 5656 2007 Watlow Electric Mfg Co 4 4 08 8 When found notice that if there is an icon with the same name the software will register it along with the EDS file Click next to proceed with the registration 9 The next step verifies that there are no errors in the EDS file a green check should be displayed next to the file as shown below ...

Страница 5: ... Mfg Co 5 4 08 10 After clicking next above the software will associate an icon to this device if there was none found in the previous step it will use a default icon to graphically represent this node Click next to proceed 11 Clicking next above completes the registration process where the question mark is removed and replaced with the icon of choice for node 7 Watlow RUI Gateway ...

Страница 6: ...tric Mfg Co 6 4 08 12 The next series of steps involves mapping the available RUI Gateway input 84 and output 80 bytes via the scanner into the PLC memory Double click on the scanner module to proceed 13 Click on the scanlist tab where the next dialogue will suggest an upload or a download Click on the upload button to allow the scanner to see what is available on the network ...

Страница 7: ...to utilize every available bit in the PLC As an example if a given device has only 9 bytes of information it will use 2 32 bit words 3 bytes not used in the last word Now when adding a new node like the RU Gateway that utilizes 80 bytes 20 32 bit words with each being a separate entity i e 32 bit Set Point of the first word will be placed in the last word of the node mentioned above The impact of ...

Страница 8: ... input bytes 84 and allocated them to the first available PLC input bytes Although we can t see in the graphic below all of the addresses assigned you can trust that what was assigned are addresses 1 I Data 0 through 1 I Data 20 If there were other devices on the network and the Automap on Add box was not checked the address field below would not be populated Clicking on the Advanced button would ...

Страница 9: ...ten this completes the configuration of the RUI Gateway using RSNetWorx Configuration of the RUI Gateway 17 Prior to looking at the PLC side of things let s first take a look at a possible network configuration The graphic below depicts a network consisting of an RUI Gateway with a PLC on one side talking DeviceNetTM where on the other side of the gateway we see four EZ ZONE PM controls talking St...

Страница 10: ... below does not represent all of the RUI Gateway prompts that need configuration but they do represent those that are pertinent to this discussion For further information on the RUI Gateway configuration go to the Watlow website and download the RUI Gateway User Manual Gateway Instance Enable Gateway Instance CIP Offset Gtw 1 Du en Yes ost 0 Gtw 2 Du en Yes ost 4 Gtw 3 Du en Yes ost 8 Gtw 4 Du en ...

Страница 11: ...he Standard Bus controller with the same address 1 16 The CIP offset allows for the PLC or any master on the DeviceNet TM side to read or write the same member from any of the four controllers on the Standard Bus network via an explicit message Configuring the DeviceNetTM Scanner 1769 SDN Using RSLogix 5000 20 In the examples that follow please note that the PLC being used is a CompactLogix L32E I...

Страница 12: ... is important to note that the EZ ZONE family of controls has an on board EEPROM to back up user settings in the event of a power loss By default the non volatile save parameter is enabled therefore changes made over the network as well as any changes made from the RUI are saved to the EEPROM If the implicit output PLC to EZ ZONE Control assembly is in use where information is exchanged implicitly...

Страница 13: ...The rung of logic below when enabled will execute an explicit message sent to the gateway where it will then be routed out over Standard Bus to the EZ ZONE PM control defined by the instance oSt prompt Because the CIP offset is set to 12 for gateway instance 4 this message will be routed to PM4 When done the destination tag identified under the configuration tab EEPROM _Status see below will conta...

Страница 14: ...te 51 The numbers shown are in decimal where the class and the attribute will need to be converted to hexadecimal for the message instruction 27 As another example of explicit messaging to read a specific member such as PV1 of PM1 as shown in the graphic above step 17 the MSG instruction in the PLC would be configured with the class equal to 104 instance would be 1 and the attribute would be 1 as ...

Страница 15: ...er Logic Example Using an Allen Bradley CompactLogix PLC Watlow 1241 Bundy Blvd Winona MN 55987 Telephone 507 494 5656 2007 Watlow Electric Mfg Co 15 4 08 Default Target to Originator T to O Assembly Default Originator to Target O to T Assembly ...

Страница 16: ...w to change either of the implicit assemblies download the PM Communications manual from the Watlow website Refer to step one for the link to Watlow s website 30 For ease in programming it is suggested but not necessary that two user defined data types be created reflecting the default assembly structures or the user defined structure as shown below In the examples that follow two user defined dat...

Страница 17: ...oportionally Keep in mind that the maximum number of modifiable members for the T to O and O to T assemblies is 20 where the user can dedicate all of them to one EZ ZONE PM ST excluded control or distribute them in any manner across the network The distribution of the assemblies is determined by the CIP Assembly size a nb prompt within the RUI 33 Look closely at the names and the descriptions of t...

Страница 18: ...ateway Instance CIP Assembly Size Gtw 1 A nb 4 Gtw 2 A nb 10 Gtw 3 A nb 2 Gtw 4 A nb 4 As can be seen above unless changed the members that occupy any one of the 20 member locations or wherever the gateway instance changes will be according to the factory defaults So the first member of the T to O for any given gateway instance will always be PV1 regardless of where it is placed in the assembly 35...

Страница 19: ...I Gateway Each of these bits can be monitored in the PLC where an alarm can be driven if communi cations with any enabled PM control fails 36 Note that in the table above step 35 showing both logical and physical addresses logical addresses are set by the user that the communications card addressing is not set directly by the user To relieve the burden of having to set multiple Standard Bus addres...

Страница 20: ...ons are programmed to send and receive the implicit assemblies to from the PLC to the desired EZ ZONE controls 38 As can be seen above the controller tags created for inputs from the EZ ZONE controls to the PLC was defined as GTW_Inputs where the tag created for the outputs from PLC to EZ ZONE controls was named GTW_Outputs The ease in programming should now be apparent Due to the fact that the us...

Страница 21: ...tTM Configuration Ladder Logic Example Using an Allen Bradley CompactLogix PLC Watlow 1241 Bundy Blvd Winona MN 55987 Telephone 507 494 5656 2007 Watlow Electric Mfg Co 21 4 08 Custom T to O Assembly Custom O to T Assembly ...

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