Allen Bradley Modules 1794-OB8 1794 OB8 Output Module

Product Description

Allen Bradley Modules 1794-OB8 1794 OB8 Output Module

Product Description:

The Remote I/O communications module allows a SCANport product to look and act like a Remote I/O chassis when connected to a programmable controller. Data contained in the input/output image table is transferred between the programmable controller by the Remote I/O scanner, the same as with any Remote I/O chassis. You control the location of data transferred by setting the rack address and
starting group. You control the amount of data by setting the DIP switches on SW3. Important: Thecommunications module does not scale the data that is transferred. Consequently, all scaling of the data must be done in the controller. Refer to the user manual for your SCANport product for details on
device units. Important: The Remote I/O to SCANport conversion is asynchronous. Data sent to the adapter for transfer to the drive must be maintained until the drive has received data.DIP switches on SW3 determine how the data contained in the programmable controller I/O image table is used in the drive. Figure shows an I/O image table.

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For the requested packet interval, enter the number of milliseconds desired between each I/O message
between the ControlLogix processor and the 1203-CN1. The 1203-CN1 can handle a packet interval as
low as 5 milliseconds; therefore, make sure that this value is set to at least Click the "Finish" button to
complete the configuration of the I/O connection in RSLogix 5000. At this point, download your configuration to the ControlLogix processor, then exit RSLogix 5000. To actually schedule the I/O, you will need to start RSNetWorx for ControlNet. Once RSNetWorx starts, go online to the ControlNet network
containing the ControlLogix chassis and 1203-CN1 being configured. Turn on the "Enable Edits" check box, then save the network. This causes the I/O connection created in RSLogix 5000 to be scheduled in the ControlLogix processor. After a few seconds, the I/O LED on the ControlLogix processor and the module LED on the 1203-CN1 should stop blinking and remain green. If they do not, it could indicate a number of I/O-related problems

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