Communicating with Devices on an Ethernet Network

11-25

 

 

Referencing Data Table Memory - the Data Table locations in the Custom Data Table Monitor are referenced by placing custom tags into the ASCII file of the controller. The format of the custom tag is:

<!ABDTR-file_type{file_number}:{file_element}[,#elements][%forma t][#expand][!comment]>

The items surrounded with {} are sometimes optional, whereas the items surrounded by [] are always optional.

You must always specify the basic file reference. Depending on which file is being referenced, file_number or file_element may be defaulted. If the file_type is I, O or S, the file_number does not need to be specified, but the file_element must be specified. If the file_type is not one of the three special files, the file_number must be specified and the file_element may default to zero (because the input, output and status files have fixed numbers).

Other considerations:

#elements - if not specified, this defaults to one. If less than one, also defaults to one. Each element gets output using the same format (whether specified with %format or defaulted). Any associated comment is displayed only for the first element.

%format - legal values are %b for binary, %d for decimal, %0 for octal and %x for hexadecimal. The following file types allow the format to be specified:

Input

Integer

Output

BCD

Status

All other file types are displayed in an appropriate format. If a % format modifier is present, the format may be changed by clicking on the file type/number via a web browser.

#expand - legal values are #c and #e. This modifier determines whether the structure file types are displayed in their expanded or compacted formats. If a # modifier is present, the format may be changed by clicking on the [+]/[-] via a web browser. If a #modifier is not present, the default display of expanded will be used.

!comment - data after the exclamation point and up to the closing > will be displayed in the Comment column of the monitor.

Publication 1785-UM012D-EN-P - July 2005

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Bradley Smoker PLC-5 user manual Bcd