Rockwell Automation 1404-M4_M5_M6_M8 Powermonitor 3000 User Manual, Firmware rev. 3.0 or LATER - Manual (Page 86)

86 Publication 1404-UM001F-EN-P - November 2009
Chapter 4 Communication
Single Element Data Writes
A single element write to a data table must meet the following general
criteria:
•
A valid password is written to Table 60, element 0 to enable
single element writes.
•
The source and destination data type and length must match, for
example, floating point or integer, 4 bytes or 2 bytes.
•
The source data element must be within the legal range listed in
the data table specification.
•
Reserved elements may not be written.
•
For DeviceNet optional communication only, each consecutive
write must be unique.
•
After 30 minutes without a write, single element writes will be
disabled.
You may read the Write Error Status table after writing an element to
verify that the write was valid and accepted by the power monitor. If
there was an error in the last write, the Write Error Status indicates the
CSP file or assembly instance (DeviceNet network only) number and
the offending element number.
You may write data to any writeable data table element in the power
monitor.
Single Element Write Flow Diagram