RH924YF

Product Details

Product Description

Product Description
Brand:FOXBORO
Type:RH924YF
Origin: the United States
Warranty: 365 days
Colour: new/used
Shipping method: Courier delivery
Spare parts spare parts, the main DCS control system of PLC system and the robot system spare parts,
Brand advantage: Allen Bradley, BentlyNevada, ABB, Emerson Ovation, Honeywell DCS, Rockwell ICS Triplex, FOXBORO, Schneider PLC, GE Fanuc, Motorola, HIMA, TRICONEX, Prosoft etc. Various kinds of imported industrial parts
Normal Data Transfer 5.3.1 Write Block: Request from the Processor to the Module These blocks of data transfer information from the processor to the module. The structure of the output image used to transfer this data is shown below: Offset Description Length (words) 0 Write Block ID 1 1 to (n) Write Data (n) (n) = 60, 120, or 240 depending on the Block Transfer Size parameter (refer to the configuration file). The Write Block ID is an index value that determines the location in the module’s database where the data is placed. 5.3.2 Read Block: Response from the Module to the Processor These blocks of data transfer information from the module to the processor. The structure of the input image used to transfer this data is shown below: Offset Description Length (words) 0 Read Block ID 1 1 Write Block ID 1 2 to (n+1) Read Data (n) (n) = 60, 120, or 240 depending on the Block Transfer Size parameter (refer to the configuration file). MVI69E-MBS ♦ CompactLogix™ Platform MVI69E-MBS Backplane Data Exchange Modbus Serial Enhanced Communication Module User Manual ProSoft Technology, Inc. Page 69 of 159 5.3.3 Read and Write Block Transfer Sequences The Read Block ID is an index value that determines the location where the data is placed in the processor controller tag array of module read data. The number of data words per transfer depends on the configured Block Transfer Size parameter in the configuration file (possible values are 60, 120, or 240). The Write Block ID associated with the block requests data from the processor. Under normal program operation, the module sequentially sends read blocks and requests write blocks.
For example, if the application uses three read and two write blocks, the sequence is as follows: R1W1R2W2R3W1R1W2R2W1R3W2R1W1 This sequence continues until interrupted by other write block numbers sent by the controller or by a command request from a node on the Modbus network or operator control through the module’s Configuration/Debug port. The following example shows a typical backplane communication application. If the backplane parameters are configured as follows: Read Register Start: 0 Read Register Count: 480 Write Register Start: 480 Write Register Count: 480 The backplane communication would be configured as follows: Database address 0 to 479 is continuously transferred from the module to the processor. Database address 480 to 959 is continuously transferred from the processor to the module. The Block Transfer Size parameter configures how the Read Data and Write Data areas are broken down into data blocks (60, 120, or 240).

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