19945 - Remote MSG. from SLC 5/04 to a 1756-L1 Processor via a 1756-DHRIO.
Access Level: TechConnect Date Created: 07/03/2001 09:14 AM Last Updated: 09/21/2011 05:24 PM
Remote MSG. from SLC 5/04 to a 1756-L1 Processor via a 1756-DHRIO NOTE: The original intent of this document is to address issue with two controllogix controllers in the same chassis with only one 1756dhrio in the rack. The 1756dhrio has a "controller slot" parameter in its "channel configuration" tab. The user can get to this from the "module configuration". The "controller slot" is where the 1756Lxx controller is at. xx = 1, 55, 61, 62, 63, 64, 65. A msg sent to the controllogix via the 1756dhrio can be a "local" msg for only one controller. The "local" controller is the one specified by the "controller slot". For a msg sent to the second controller in the rack, then the msg has to be "remote". This document is meant to show how a remote msg is sent to the second controller.
DOCUMENT OVERVIEW: The enclosed document demonstrates remote messaging from an SLC 5/04 at node 10 to a 1756-L1 processor in slot 0 via a 1756-DHRIO module at node 30. It includes creating and mapping a tag in the 1756-l1 processor. Setting up the 1756-DHRIO routing table and a MSG. read/write in the SLC 5/04 processor. The document assumes the user ability to use RSlogix 5000 and RSlogix 500 software.
MAP PLC 5/ SLC MESSAGES Using RSLogix 5000 software create the controller tag slc_data illustrated below. Select logic from the tool bar in RSlogix 5000 and then map plc/slc messages from the drop down menu. Enter the file # you wish to associate with tag slc_data. In this example file 9 is used and will be addressed as N9:0-9 in the SLC message.
1756 DHRIO routing table Using RSLINX right click your mouse on the 1756-dhrio module. Select module configuration and then DHRIO routing table. In our example 1756-L1 processor is in slot 0 and the 1756-DHRIO module is in slot 4. It is necessary to configure a backplane link ID in order to route messages from the DHRIO module to the processor. In our example the 1756-DHRIO module is node 30 on the DH+ network and the backplane link ID is 10.
SLC MESSAGE READ In this example the 5 words of data will be read from file 9 in the 1756-L1 processor to N9:20 -24 in the SLC 5/04. LOCAL BRIDGE ADDRESS: This is the DH+ node address of the 1756-DHRIO module REMOTE STATION ADDRESS: The slot number of the 1756-L1 processor in the control logix chassis REMOTE BRIDGE LINK ID: The backplane link id assigned in the DHRIO routing table.
Make sure the Link ID of the 1756-DHRIO CHA matches the Link ID of CH1 on the 5/04 processor.
SLC MESSAGE WRITE In this example 5 words of data will be written from N9:30-34 in the SLC 5/04 to SLC_data file 9 in the 1756-L1 processor
Disclaimer The following examples shown are intended solely for the purposes of example, designed to assist and speed up implementation of this module. Since there are many variables and requirements associated with any particular installation, Rockwell Automation does not assume responsibility or liability (to include intellectual property liability) for actual use based upon the examples shown in this publication. The ladder logic works in it's original form. Any modifications made to these examples are done solely by the programmer. Troubleshooting of modifications is not included with standard technical support. Modifications to example programs can be reviewed and will be supported by Rockwell service. Automation for a fee. Contact the Product Services and Support group for further information regarding this
