Allen-Bradley Powermonitor 3000 User Manual page 126

5-12 Setpoint Programming and Operation
Publication 1404-UM001D-EN-E - October 2004
• Password: A valid password is required to enable, disable or
clear the min/max log. Write a value of –1 when simply selecting
a setpoint
• Setpoint number: Selects a setpoint for configuration or
read-back; or indicates the currently selected setpoint on a read.
• Read-back mode: 0 selects auto-increment; 1 selects
manual-increment (only mode supported by DeviceNet and
Ethernet units)
• Setpoint type: Refer to Table 5.2
• Evaluation condition: 0 = Over forward; 1 = over reverse; 2 =
under forward; 3 = under reverse; 4 = equal, 5 = not equal (see
above)
• High and low limits: Expressed in integer/exponent format
• Action and release delays: Expressed in seconds (M4, M5) or
tenths of a second (M6, M8)
• Output action: Refer to Table 5.3
• Status: 0 indicates released; 1 indicates activated; this read-only
element is ignored on a write
• Accumulated time: Expressed in integer/exponent format
• Clear time accumulator command: 0 performs no action; 1
clears the accumulated time for selected setpoint
Reading Setpoint Status Data Using Communications
To read the setpoint status using communications, the client uses the
indexed read method. The Powermonitor 3000 uses Table A.18
Setpoint Setup/Read-Back Select and Status both to select the setpoint
to be read on the next read, and to return the status of the selected
setpoint. In auto-increment mode (0), the first read returns the status
of setpoint 1, the second read setpoint 2, and so on. In manual mode
(1) the client alternates writes selecting the desired setpoint with reads
of the setpoint status. See the list just above for the content of this data
table.