P-OPEN P-OPEN-P4-150PAC-OP150P4 Touch screen

The Block numbers represent data codes that the Module will recognize as instruction codes for performing a specific function. The following topics describe these groups of blocks in more detail. Normal Data Transfer Normal data transfer includes the paging of the user data found in the module’s internal database in registers 0 to 4999, and the status data. These data are transferred through reading and writing of the M1 files. No special block number is required to perform the normal data transfer. The following topics describe the structure and function of each block.

Special Function Blocks 

Special function blocks are optional blocks used to request special tasks from the module. The current version of the software supports the following special function blocks: 

 Initialize Output Data block 

 Event Command block 

 Command Control blocks 

 Command Control Bits 

 Set new module IP address 

 Get module IP address 

 Warm-boot 

 Cold-boot

Initialize Output Data Blocks (1000 and 1001) 

When the module performs a restart operation, it will request blocks of output data from the processor to initialize the module’s output data. Use the Initialize Output Data parameter in the configuration file to bring the module to a known state after a restart operation. The following table describes the structure of the block used to request the data.The Ladder logic in the processor must recognize these blocks and place the correct information in the output image to return to the module. The following table describes the format of the returned write block.

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