Rockwell Automation 1404-M4_M5_M6_M8 Powermonitor 3000 User Manual, Firmware rev. 3.0 or LATER - Manual (Page 81)

Publication 1404-UM001F-EN-P - November 2009 81
Communication Chapter 4
Powermonitor 3000 Unit Data Table Attributes
Powermonitor 3000 unit data table attributes include their addressing,
data access, number of elements, data type, and user-configurability.
Address - Data tables are addressed in a number of ways, depending
on the type of communication and the protocol being used.
•
For serial communication (native RS-485 and optional RS-232)
and optional Ethernet CSP/PCCC communication, the CSP
(Client Server Protocol) File Number identifies the table (and its
data type) in message instructions, topic configuration or
communication commands.
•
For remote I/O communication, a unique Block Transfer Size
identifies the data table to read or write using a Block Transfer
instruction.
•
For optional DeviceNet and EtherNet/IP communication, 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 you may
configure the content and/or length of the data table.
IMPORTANT
CSP file numbers are based on SLC 5/0x data table addressing.
Because SLC 500 data tables 1…8 are assigned specific data types,
file numbers lower than 9 are not used in the Powermonitor 3000 unit.