Addresses; Number Of Elements; List Of Services - Omron KM50 Communications Manual

*1 The command system is adjusted to that of the KM20-B40 and KM100. Using these
variable types is convenient when adding to an existing KM-series system.
*2 This is the command system for the KM50-C/-E.
The read commands are the same as those indicated with "*1," but the items were
reordered to make reading easier. Using these variable types is convenient for new
systems.
*3 These type codes are used only for the KM50-E.
*4 The time units for the measurement values are as follows:
Every 5-minute period: Values measure over a 5-minute period, e.g., 00:05 to 00:10.
Every 5 minutes: Values measured every 5 minutes for 2 days.
(Total from when the power is turned ON or the Power Monitor is reset.)
Every hour: Values measured over a 1-hour period.
Every day: Values measured over a 1-day period.
Every month: Values measured over a 1-month period.
*5 The history of alarms that occurred in the past is not saved when power is interrupted.
Only alarms that occur after power supply is turned ON are in the history.
The type codes for the parameter area are given in the following table.
Parameter type
C000

■ Addresses

An address is appended to each variable type. Express addresses in 2-byte hexadecimal and
append them for the specified access size.

■ Number of Elements

The number of elements is expressed in 2-byte hexadecimal.
The specification range for the number of elements depends on the command. Refer to the
descriptions of individual services for details.

■ List of Services

MRC SRC
01 01 Read Variable Area
02 01 Read Parameter Area
02 02 Write Parameter Area
05 03 Read Controller Attributes
06 01 Read Controller Status
07 01 Read Time Data
07 02 Write Time Data
08 01 Echoback Test
30 05 Operation Command
* Services will not be accepted and responses will not be returned while the Power Monitor is
starting (i.e., from when the wait display appears at startup until the instantaneous power is
displayed).
Contents
Setting parameters
Name of service
This service reads from the variable area.
This service reads from the parameter area.
This service writes to the parameter area.
This service reads the model number and communications
buffer size.
This service reads the operating status.
This service reads the time data.
This service writes the time data.
This service performs an echoback test.
This service performs the following operations according to
the command.
• Reset Total Power Consumption
• Reset Maximum/Minimum
• Reset Software
• Initialize Settings (restore defaults)
2. 2 Structure of Command Text
Remarks
Processing
2-7