User Manual, PRIOR to Firmware rev. 3.0 Owner manual

Publication 1404-UM001D-EN-E - October 2004
Communications 4-17
• For Remote I/O communications, a unique Block Transfer Size
identifies the data table to read or write using a Block Transfer
instruction.
• For optional DeviceNet and EtherNet/IP communications, a CIP
(Control and Information Protocol) Assembly Instance identifies
the data table.
Data Access - Data tables may be read-only or read/write.
Number of Elements - the number of unique data values contained in
the table. The number of words or bytes this represents depends on
the data type.
Data Type - Specified as floating-point or integer. Each floating-point
element consists of two 16-bit words or four 8-bit bytes of data. Each
integer element consists of one word or two bytes.
User-configurability - This attribute determines whether the user may
configure the content and/or length of the data table.
Let’s look at the Date and Time table as an example:
• CSP file number: N11
• Remote I/O BT length: 12
• CIP assembly instance: 6 (Write) or 7 (Read)
• Data table name: Date & Time
• Data access: Read/write
• Number of elements: 8
• Data type: Integer
• User-configurable: No
The Powermonitor 3000 data tables are listed in Appendix A.
Table A.1 in shows a summary of all the data tables.
IMPORTANT
CSP file numbers are based on SLC 5/0x data table
addressing. Because SLC 500 data tables 1 through 8
are assigned specific data types, file numbers lower
than 9 are not used in the Powermonitor 3000.