Maxim Integrated 6612-OMU-S2-URT-V1-13 User Manual

Simplifying System IntegrationTM

6612_OMU_S2_URT_V1_13

Firmware Description Document

December 21, 200 9

Rev. 1.1

6612_OMU_S2_URT_V1_13 Firmware Description Document FDD_6612_010

© 20 09 Teridian Semiconductor Cor poration. All rights res er ved.
Terid i an Semiconductor Corp or ation is a registered trademark of Teridian Semiconductor Cor poration.
Simplifying Syst em Integrat i on is a trademark of Teridian Semi condu ct or Corporat ion .
All other t r ademar ks are the property of their respective owners.

Terid i an Semiconductor Corpor ation makes no warrant y for the us e of i ts pr oducts, other than expr essly
contained in the Company’s warranty detailed in the Teridian Semiconduct or C or poration standard Terms
and C onditi ons. The company assumes no respon sibility for any errors wh ich may appear in this
document, reserves the right to change devices or specifi cations detailed herein at any tim e without
notice and does not make any c omm i tment to update the information contained herein. Accordingly, the
reader is cautioned to veri fy that th i s docum ent is curren t by compari ng it to the latest version on
http://w w w. teridian.com or by checking with your sales represen tativ e.

Terid i an Semiconductor Corp., 6440 Oak Canyon, Suite 100 , Irvine, CA 92618

TEL [phone], FAX [phone], http://www.teridian.com

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FDD_6612_ 010 6612_OMU_S2_URT_V1_13 Firmware Description Document

Table of Contents

1 Introduction ................................................................................................................................... 5

2 Description of Basic Measurement Equations ............................................................................. 5

3 Serial Communication ................................................................................................................... 6

4 Command Line Interface ............................................................................................................... 6

4.1 Identification and Information Com mands ................................................................................. 6

4.2 Reset C omm ands .................................................................................................................... 7

4.3 MPU Data Access Command ................................................................................................... 7

4.3.1 Individual Address Read .............................................................................................. 7

4.3.2 Cons ecuti ve Read ....................................................................................................... 7

4.3.3 Block Reads ................................................................................................................ 8

4.3.4 Concatenated Reads ................................................................................................... 8

4.3.5 MPU/XD AT A Ac ce s s Co m mands ................................................................................ 8

4.4 Auxiliary Comman ds ................................................................................................................ 9

4.4.1 Repeat Command ....................................................................................................... 9

4.5 Calib r ation C omm ands ........................................................................................................... 10

4.5.1 Complete Cal ibrat i on Com mand ( “ Singl e Command Calibration”) .............................. 10

4.5.1.1 CAL C ommand............................................................................................ 10

4.5.1.2 CALW Comm and ........................................................................................ 10

4.5.2 A tomic Calibration Commands................................................................................... 11

4.5.2.1 CLV C ommand............................................................................................ 11

4.5.2.2 CLI Command ............................................................................................. 11

4.5.2.3 CLT Command ............................................................................................ 12

4.6 CE Data Access Commands .................................................................................................. 13

4.6.1 Single Regis ter CE Access ........................................................................................ 13

4.6.2 Cons ecuti ve CE Reads.............................................................................................. 13

4.6.3 U Command .............................................................................................................. 14

4.7 CE Control C om mands .......................................................................................................... 15

4.7.1 CE Data Write ........................................................................................................... 15

4.7.2 Turn Off CE Command .............................................................................................. 15

4.7.3 U Command .............................................................................................................. 15

4.7.4 Turn On CE Com mand .............................................................................................. 15

4.8 I/O RAM (Con fi guration RAM) Command ............................................................................... 16

5 MPU Measurement Outputs ........................................................................................................ 17

6 Configuration Parameter Entry ................................................................................................... 38

6.1 MPU Parameters ................................................................................................................... 38

6.2 CE Parameters ...................................................................................................................... 46

7 Address Content Summary ......................................................................................................... 50

8 Contact Information ..................................................................................................................... 55

Revision History .................................................................................................................................. 56

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6612_OMU_S2_URT_V1_13 Firmware Description Document FDD_6612_010

Tables

Table 1: Measu r ement Equation s Definitions ........................................................................................... 5

Table 2: Ou tlet 1 MPU Outputs for Narr owband Method
Table 3: Ou tlet 1 MPU Outputs for Wideband Meth od
Table 4: Outlet 2 MPU Outputs for Nar r owband Method
Table 5: Ou tlet 2 MPU Outputs for Wideband Meth od
Table 6: Combined Outlets MPU Outputs for Narrowband Method
Table 7: Combined Outlets MPU Outputs for Wideband Method
Table 8: MPU Parameters
Table 9: CE Parameters
Table 10: MPU Outp ut Summary Chart
Table 11: MPU Input Summary Chart
Table 11: CE Inpu t Summary Chart

......................................................................... 17

............................................................................ 21

......................................................................... 25

............................................................................ 30

......................................................... 34

............................................................ 36

..................................................................................................................... 38

........................................................................................................................ 46

.................................................................................................. 50

.................................................................................................... 53

....................................................................................................... 54

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1 Introduction

This document describes the firmware 6612_OMU_S2_URT_V1_13, which can be used with the Teridian
78M6612 dual outlet power and energy measurement IC. This firmware is designed for sing le phase
measurem ent systems usi ng current shunts as the current sensors, but current transform er sensors may
also b e used i f desired.

Applicability of this firmware is with the Teridian 78M6612 OMU Demo Unit and the Teridian 78M6612
AC-PMON Demo Board. The demo vehicles are cali brated and the user can i m mediately access
measurem ent dat a such as Watts, Voltage, Current, accumulated Energy an d line frequen cy. RTC (real
time clock) is n ot suppor ted by this firmware.

All measu r ement calcul ations are com puted by the 78M 66 12 and this i nformation is comm unicated to the
host processor. All communi cation between the 78M6612 and the host proc essor occ urs over a serial
interface (UART0) on the TX and RX pins of the 78M6612 device. The following sections detail the
commands to be sent by the host to configure the 78M6612 and for accessin g measurement information.

2 Description of Basic Measurement Equations

The Ter idian 78M6612 with fi r mware 6612 _OMU_S2_URT_1_13 provides the user with two types of
continuously updating measurem ent data (on 1 sec ond increments by default). One is defined as
“Narrowband” (NB) and the other is defined as “Wideband” (WB).

Narrowband measurements are typically used by util ities wh er e the measured waveforms ar e assumed to
be si nusoidal.

Wideband measurements are gen er ally of interest when measuring nonlinear systems such as swit ched
mode power su pplies that tend t o have non-sinusoidal waveforms.

Table 1 lists the basic measurement equations for the Narrowband and the Wideband methods.

Table 1: Measurement Equations Definitions

Symbol Parameter Narrowband Equation Wideband Equation

V RMS Voltage

I RMS Current I = S/V I = √∑i(t)2

P Active Power P = ∑ (i(t) * v(t)) P = ∑ (i(t) * v(t))
Q

S

PF Power Factor P/S P/S
PA Phase Angle ATAN (Q/P) ATAN (Q/P)

Reactive

Power

Apparent

Power

V = √∑v(t)2 V = √∑v(t)2

Q = ∑ (i(t) * v(t)shift 90º)

S = √(P2 + Q2) S = V * I

Q = √(S2 – P2)

Both types of measurement outp uts are continuously available to t he us er . To obtain measurement
outputs, the ser i al UART interface betw een the 78M6612 and the host process or m ust be set up and is
described in the next section.

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3 Serial Communication

The serial communicati on with the 78M6612 t akes pl ace over a UA R T (UART0) interface. The default
settings for the UART of the 78M6612 are given below:

Bau d Rate: 38400bps
Data B its: 8
Parity: None
Stop Bits: 1
Flow Control: Xon/Xoff

The hos t’s ser i al int erface p or t is required to implement these settings on its U ART. To verify
communication between t he hos t and the 78M66 12, th e host must send a <CR> (carri age return) to the
78M6612. Communication is verified when the 78M6612 returns a > (greater than sign) known as the
command prompt. An example is given below:

The host sends the following to the 78M6612:
<CR>
The 78M6612 sends the following back to the host:
>

Commands the host may sen d to th e 78M6612 in order for the host to configure the 78 M 6612 or to
receive the measurement data are given i n the next section.

4 Command Line In ter f ace

Firmware 6612_O M U_S2_U RT_V1_13 contain s an ins truction set called the Command Line Inter fac e
(CLI), which facilitates communication via U ART between the 78M6612 and the host proces sor. The CLI
provid es a set of commands which are used by the host to configure and t o obtain in formation from the
78M6612.

4.1 Identification and Information Commands

The I comm and is us ed to identify the revisions of Demo Code and the contained CE code. The host
sends the I comman d to the 78 M 6612 as follows:

>I<CR>
The 78M6612 will send back to the host the following:
TSC 78M6612 OMU S2 URT v1.13, July 20 2009(c)2008 Teridi an Semiconductor Cor p.

All Rights Reserved
CE6612_OMU_S2_A01_V1_2
>

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FDD_6612_ 010 6612_OMU_S2_URT_V1_13 Firmware Description Document

4.2 R eset Comman ds

A soft r eset of the 78M6612 can be perfo r med by using the Z command. The soft reset restarts code
execution at addr 0000 bu t does not alter flash contents. To issue a soft r eset to the 7 8M6612, th e host
sends the following:

>Z<CR>
The W command ac ts like a hard ware reset. The energy accumulators i n XRAM will r etain their values.

Z Reset

Description: Allows the u ser to cause soft r esets.
Usage: Z Soft reset.

W Simulates wat chd og reset .

4.3 MPU Data Access Command

The most per tinent is the M PU data ac cess com mand. All the measu r ement c al culations are stored in the
MPU data ad dresses of the 78M6612. The host requests measur ement information using th e M PU data
access command wh ich is a right parenthesis

)
To request i nformation, the host sends the MPU data ac cess com mand, the add r ess (in hex) which is

requested, the format in which the data is desi r ed (Hex or D ecimal ) and a c ar r iage r eturn. The c ontent s
of the addres ses that would be requested by the host ar e contained in Section 5.

4.3.1 Individual Address Read

The hos t can r eques t the information in hex or decimal format. $ requests information in hex, and ?
requests information i n decimal. When reques ting i nformation in decimal, the dat a is preceded by a + or
a -. The exception is )AB? which returns a string (see page 39).

An example of a comm and requestin g the measured power in Watts from Outlet 1 (locat ed at address
0x08) in decim al is as follows:

>)08?<CR>
An example of a comm and requestin g the measured power in Watts from Outlet 1 (locat ed at address

0x08) in hex is as follows:
>)08$<CR>

4.3.2 Consecutive Read

The hos t can r eques t information from consecu tive addresses by add i ng additional ? for decimal or
add i tional $ for hex.

An example of requests for the contents in decimal of ten consecutive addr esses starting with 0x12 is:
>)12??????????<CR>
An example of requests for the contents in hex of ten consecutive addresses starting with 0x12 would be:
>)12$$$$$$$$$$<CR>

Note: The num ber of ch ar acters per line is limited to no more th an 60.
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6612_OMU_S2_URT_V1_13 Firmware Description Document FDD_6612_010

4.3.3 Block Reads

The bloc k read c omm and can al so be used to read consecutive registers: )saddr:eaddr? For decim al
format or )sad dr:eaddr$ for hex format where saddr i s the start address and eaddr is the final address.

The following block read command requests the Outlet 1 wideband inform ation contain ed in Table 4 in
deci mal format:

>)20:3D?<CR>

4.3.4 Concatenated Reads

Multiple commands can also be added on a single line. R eques ting in formation in decimal from two
locati ons an d the block c om mand from above are given below:

>)12?)15?)20:3D?<CR>
Note: The num ber of ch ar acters per line is limited to no more th an 60.

4.3.5 MPU/XDATA Access Commands

) MPU Data Access

Description: Allows user to r ead from and write to MPU data space.
Usage: ) {Starting MPU Data Add res s } {option}…{op tion}<CR>
Command

Combinations:

)saddr? <CR> Read the reg ister in decimal.
)saddr?? <CR> Read t wo consecutive r egisters in decimal.
)saddr???<CR> Read three consecutive registers in decimal.

)saddr:eaddr?

Block read comm and in decimal format. Read
consecutive regis ters starting with starting
add r ess saddr and ending with add r ess eaddr.

Results given in decimal.
)saddr$<CR> Read the reg ister word in hex.
)saddr$$ <CR> Read two consecutive register words in hex.
)saddr$$$<CR> Read three consecutive register words in hex.

)saddr:eaddr$

Block read comm and in hex format. R ead

consecutive regis ters starting with starting

add r ess saddr and ending with add r ess eaddr.

Results given in hex.
)saddr=n<CR> Write th e value n to address saddr in hex format.
)saddr=n=m<CR> Write the values n and m to two consec utive

add r esses starting at saddr in hex format.
)saddr=+n<CR> Write the valu e n to address saddr in decimal

format.
)saddr=+n=+m<CR> Writ e the valu es n and m to two con secutive

add r esses starting at saddr in decimal format.

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FDD_6612_ 010 6612_OMU_S2_URT_V1_13 Firmware Description Document

Examples: )08$<CR> Reads data word 0x08 in hex format.

)08$$<CR> Reads data words 0x08, 0x09 in hex format.
)08$$$<CR> Reads data words 0x08, 0x09, 0x0A in hex

format.
)28:4D$ Read Outlet 1 narrowband data words in hex.
)08?<CR> Reads data word 0x08 in decimal format.
)08??<CR> Reads data words 0x08, 0x09 in decimal format.
)08???<CR> Reads data words 0x08, 0x09, 0x0A in decimal

format.
)28:4D? Read Outlet 1 narrowband d ata words in dec imal.
)04=12345678<CR> Writes word @ 0x04 in hex format.
)04=12345678=9876ABCD<CR> Writes two words starting @ 0x04 in hex format.
)04=+123<CR> Writes two words starting @ 0x04 in decimal

format.
)04=+123=+334<CR> Writes two words starting @ 0x04 in decimal

format.

MPU or XDATA space is the add r ess range for the MPU XRAM (0x00 to 0x7F). Addresses
from 0x80 to FF wrap to 0x00 to 0x7F. The MPU regist er s differ in size, LSBs and format.

4.4 Auxiliary Commands

4.4.1 Repeat Command

The repeat comm and can be useful for monitoring measu r ements and i s efficien t in demands from the
host.

If the host reques ts line frequ ency, alar m st atus, Irms nb overcurrent event count, Vrms SAG event count,
Vrms overvoltage event count , voltage, power, and ac cumulated energy measur em ents for Out let 1 with
the fol l owing command st r i ng:

>)01????????<CR>
If the host then desires t his s am e r eques t without issuing another c om mand, the rep eat command can be

used:
>, (no carriage retu r n needed for t he repeat comm and)
The hos t only needs to send one character rather than an entire string.

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6612_OMU_S2_URT_V1_13 Firmware Description Document FDD_6612_010

Auxiliary

Description: Various
Commands: , Typing a comma (“, ” ) r epeats the c om mand

issued from the pr evious command line. This is
very helpful when ex amin ing the value at a
certai n address ove r time, such as the CE
DRAM address for the temp er ature.

/ The slash (“/”) is useful to s eparate c omm ents

from comm ands when sendi ng macro text files
via the serial inter face. All character s in a li ne
after the slash are i gnored.

4.5 Calibration Commands

Using the pr ecision source met hod, th e user provides a precis i on voltage an d precision current load i s
provid ed to the device for cal i bration. The 6612_OMU_S2_URT_V1_13 fir mware provid es commands to
calibrate the measurement units. For l i near current sens or s, suc h as current shunt, no phase c al ibration
is necessary.

There ar e two types of calibr ation commands. The first type provides compl ete calibration. The s econd
group, called atomic calib r ation commands, provides calibration for individual portions of the IC.

4.5.1 Complete Calibration Command (“Single Command Calibration”)

There ar e two ca libration comm ands in this first group: CAL and CALW. Only one of these commands
is needed to calib r at e the System/Unit.

To use these commands, a p r ecision voltage source and a precisi on current source are r equir ed

4.5.1.1 CAL Command

To use the CAL command, enter the following:
>CAL<CR>
The respon se is:
TCal OK

VCal OK
ICal 0 OK
>

The dev i ce would calibrate the temper ature (reads CE register 71, enters i t into MPU register C0, and
saves to flash) , calibrate t he voltage (adjusts CAL VA and CAL VB registers and saves them to flas h),
and finally calibrate the cur r ent (adjusts CAL IA r egister and saves to flash).

4.5.1.2 CALW Command

To use the CALW comm and, enter the following:
>CALW<CR>
The response is:
TCal OK

VCal OK
WCal 0 OK
>

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FDD_6612_ 010 6612_OMU_S2_URT_V1_13 Firmware Description Document
The dev i ce will calibr ate th e temperature, calibrate the volt age, and finally calibrate the pow er and save

all values to flash .
The commands are summari zed in the table below:

CALx Complete Calibration Commands

Description: Allows the u ser to Cali brate the IC .
Usage: CAL Calibrates temperatu r e, th en voltage,

and finally current for Outlet 1.

CAL2 Calib r ates temperature, then voltage,

and finally current for Outlet 2.

CAL3 Calib r ates temperature, then voltage,

and finally current for both Outlet1 and
Outlet 2.

CALW Calib r ates temperature, then voltage,

and finally power for Outlet 1.

CALW2 Calibrates temperatu r e, th en voltage,

and finally power for Outlet 2.

CALW3 Calibrates temperatu r e, th en voltage,

and finally power for both Outlet1 and
Outlet 2.

4.5.2 Atomic Calibration C omm ands

The atomic cal i brati on commands prov i de individual calibration of voltage, current, temperature, watts
and a sequen ce of these resul ts in providing ful l calibr ation for the unit.

4.5.2.1 CLV Command

An example of an atom ic calibration command would be to calibrate voltage with the CLV com mand. The
CLV comman d calibr ates voltage to the target value and tolerance and saves the coefficients to flash.
The CLV command exam ple is given below:

>CLV<CR>
The response is:
VCal OK

>

4.5.2.2 CLI Command

The us er can then cali brate the current on Outlet 1 using the CLI1 command. The CLI1 command
calibrates the current on Outl et 1 to t he target value and tolerance an d saves t he coe fficients t o fl ash.
The CLI1 command example is given below:

>CLI1<CR>
The response is:
ICal 0 OK

>

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6612_OMU_S2_URT_V1_13 Firmware Description Document FDD_6612_010

4.5.2.3 CLT Command

The CLT command is used for the temperature c alibration. With this com mand, the contents of CE
register 71 are read and entered into MP U regis ter C0 and the content s are saved to flash. The CL T
command example i s given below::

>CLT<CR>
The response is:
TCal OK

>
A summary of th e atomic calibration com mands are given i n the table below:

CLxx Atomi c Calibration Commands

Description: Allows t he us er to Calibrate individual sections of th e IC.
Usage: CLV Calib r ates voltage only.

CLI1 Cali brate c urren t on Outlet 1 only.
CLI2 Cali brate c urren t on Outlet 2 only.
CLI3 Cali brate for cur r ent on both Outlet 1 and

Outlet 2 only .
CLW1 Calibrate for power on Outlet 1 only.
CLW2 Calibrate for power on Outlet 2 only.
CLW3 Calibrate for power on Outlet 1 and Outlet 2

only.
CLT Calib r ate temperat ure onl y.

The commands that follow are mainly for advanced users and are included for reference
only. These commands are not needed to operate the 78M6612 OMU or AC-PMON demo
kits.

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FDD_6612_ 010 6612_OMU_S2_URT_V1_13 Firmware Description Document

4.6 CE Data Acc es s Co m ma nds

The CE is the main signal processing unit in the 78M6612. The us er writes to the CE dat a space are
mainly for calibration purposes.

The 78M6612 OMU demo units and 78M6612 AC-PMON demo units come pre-calibrated. N o user
writes to the CE data spac e ar e necessary.

For the advanced u ser, d etails of CE dat a access commands are g i ven. The com mands simil ar to th e
MPU ac cess except that ] is used for the CE data access com mand.

The host requests access to information from the CE dat a space using the CE d ata access c ommand
which is a right bracket:

]
To request i nformation, the host sends the CE data access command, the address (in hex) which is

requested, the format in which the d ata is desi r ed (hex or decimal) and a carriage return. The content s of
the addresses that would be requested by the host are contained in Section 5.

The hos t can r eques t the information in hex or decimal format. $ requests i nformation in hex and ?
requests information i n decimal.

4.6.1 Single Register CE Access

An example of a comm and requestin g the c al ibration constant for curr ent on Outlet 1 (located at ad dress
0x08) in decimal is as follows:

>]08?<CR>
An example of a comm and requestin g the c al ibration constant for curr ent on Outlet 1 (located at ad dress

0x08) in hex is as follows:
>]08$<CR>

4.6.2 Consecutive CE Reads

The hos t can r eques t information form consecu tive addresses by add i ng additional ? for decimal or
add i tional $ for hex.

An example of requests for the contents in decimal of ten consecutive addr esses starting with 0x08 would be:
>]08??????????<CR>
An example of requests for the contents in hex of ten consecutive addresses starting with 0x08 would be:
>]08$$$$$$$$$$<CR>
Note: The num ber of ch ar acters per line is limited to no more th an 60.

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4.6.3 U Command

The U command is used for updating defaul t values of the CE Data in flash. The descr i ption is given in
the CE cont r ol Command section.

Add i tional examples are provided in the table that follows:

] CE Data Access

Description: Allows user to r ead from and write to CE data space.
Usage: ] {S tarting CE Data Addres s}{option}… { option}<CR>
Command

Combinations:

Examples: ]40$<CR> Reads C E data word 0x4 0 in hex.

]saddr?<CR> R ead 32-bit word in decimal.
]saddr??<CR> R ead two consecu tive 32-bit words in decimal.
]saddr???<CR> R ead three consecutive 32-bit words in decimal.
]saddr$<CR> R ead 32-bit words in hex.
]saddr$$<CR> R ead two consecu tive 32-bit words in hex.
]saddr$$$<CR> R ead three consecutive 32-bit words in hex.
]U<CR> Update default versi on of CE Data in

FLASH. Important: The CE must be

stopped (CE0) before issuing this
command! Also, remember to restart

by executing the CE1 command prior to
attempting measurements.

]40$$<CR> Reads CE data words 0x40 and 0x41 in hex.
]40$$$<CR> Read s CE data words 0x40, 0x41 and 0x42 in

hex.
]40?<CR> Reads CE data words 0x40 in decimal.
]40??<CR> Reads CE data words 0x40 and 0x41 in decimal.
]40???<CR> Reads CE data words 0x40, 0x41 and 0x42 in

decimal.
]7E=12345678=9876ABCD<CR> Writes word at 0x7E (hex format).
]7E=12345678=9876ABCD<CR> Writes two words star ting at 0x7E (hex format) .
]7E=+2255<CR> Write th e value 2255 in decimal to locati on 0x7 E.
]7E=+2255=+456<CR> Write th e value 2255 in decimal to locati on 0x7 E

and the value 456 in decimal to location 0x8E.

CE data space is the address range for the C E DRA M (0 x1000 to 0x13FF). All CE data
words are in 4-byte (32-bit) format. The offs et of 0 x100 0 does n ot have to be entered
when using the ] command, thus typing ]A? will access t he 32-b i t word located at the byte
add r ess 0x1000 + 4 * A = 0x1028 .

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FDD_6612_ 010 6612_OMU_S2_URT_V1_13 Firmware Description Document

4.7 CE Control Commands

The most per tinent comm and is the enable comm and, CEn. It is mai nly used to turn the CE on or off
such that the CE data contents can be updated in flash using the U command. The CE i s normally on but
in order to update the CE data entry, the CE must first be turned off using the CE0.

4.7.1 CE Data Write

If the cal coeffici ent for t he IA curren t input is changed:
>]08=FFFFC9B0<CR>

4.7.2 Tu rn Off CE Command

For this valu e to be t he default valu e, th e U command is used. The CE m ust first be tu r ned off u sing the
CE0 comman d:

>CE0<CR>

4.7.3 U Command

The U command is now iss ued to change the default value set above as follows:
>]U<CR>

4.7.4 Turn On CE Command

The CE must then be turned on using the CE1 command:
>CE1<CR>
The default value for the CA L IA coefficient is now changed in the CE Data spac e and i s updated i n

Flash.
The CE C ontrol Commands are highlight ed in the table below:

C Compute Engine Control

Description: Allows the user t o enabl e and c onfigure the com pute engine.
Usage: C {option} {argu ment}<CR>
Command

Combinations:

Examples: CE0<CR> Disables the CE.

CEn<CR> Compute Engine Enable (1  E nable, 0  Dis-

able)

CTn<CR> Select input n for TMUX output pi n. Enter n in

hex notation.
CREn<CR> RTM out put control ( 1  Enab le, 0  Disable)
CRSa.b.c.d<CR> Selects CE addresses for RTM outpu t.

(maximu m of four).

CE1<CR> Enables the CE .
CT1E<CR> S elects the CE_BUSY signal for t he TMUX

outpu t pi n.

Rev. 1.1 15

6612_OMU_S2_URT_V1_13 Firmware Description Document FDD_6612_010

4.8 I/O RAM (Configuration RAM) Command

The RI command is used for al teri ng the I/O RAM contents. This is usually n ot necess ary as the FW
defaults these s ettings appropriat ely.

One case where t he RI com mand could be used would be to speed up the ac cumulation interval f or
energy measurements. If the accumulation interval is to be r educ ed by h alf from its default value, the
following command is entered:

>RI1=+30<30>
More details on the accumulation in terval are given in Section 5.

R DIO and SFR Control

Description: Allows the us er to read from and write to I/O RA M..
Usage: RI {option} {register} … {option } <CR >
Command

Combinations:
Example: RI60$$$$<CR> Read all four RTM probe registers.

Configuration RAM space is the address r ange 0x2 000 to 0x20FF. This RAM c ontains
registers used for configuring basic hardware and functional properties of the 78M6612
and is organized in bytes (8 bits). The 0x2000 offset is automatically added when the
command RI is typed.

RIx…<CR> Select I/ O RAM location x (0x2000 offset is

automatically added).

16 Rev. 1.1

FDD_6612_ 010 6612_OMU_S2_URT_V1_13 Firmware Description Document

Location

Minimum Temperature Alarm.

Definiti o n for Status Register

5 MPU Measurement Outputs

This section describes the measurement outputs that can be obtained. Energy outputs are accumulated
numbers. The default accumulation interval is 1 second (999.75 ms). The host access i ng the
measurement in formation from the 78M6612 more frequently will not resu lt in any upd ate in the
information. The ac cumulation interval is set by the following:

0.01666 * SUM_CYCLES[5:0] (in sec onds ) wh er e SUM_CYCLE[5:0] are r egister bits in the I/O RA M that
can be bet ween 15d and 63d (default is 60d ) . SUM_CYCLES must never be set below 15 (0.250
seconds).

The us er can reduce the accu m ulati on cycle wit h the RI command. To reduce the accu m ulati on interval
to 0.5 seconds, enter the following via the UART:

RI1=+30<CR>
A )U c om mand will preserve the new accu mul ation value across power resets, by writing them to flash.

Table 2 list s the Narrowband outputs for Outlet 1.

Table 2: Outlet 1 MPU Outputs for Narrowband Method

Output

Delta

Temperature

Line

Frequency

Alarm Status 02

(hex)

00 0.1 °C Temperature difference from 22 °C.

01 0.1 Hz Line Frequency.

LSB Comment Example

Bit 0 –

Bit 1 – Maximum Temperature

Alarm.

Bit 2 – Minimum Frequency Alarm.

Bit 3 – Maximum Frequency Alarm.

Bit 4 - SAG Voltage Alarm.

Bit 5 – MINVA – under minimum

voltage on VA input.

Bit 6 – MAXVA – over maximum

voltage on VA input.

Bit 7 – MAXIA_NB – maximum

narrowband current exc eeded on

Outlet 1.

Bit 8 – MAXIA_WB – maximum

wideband current exceeded on

Outlet 1.

Bit 9 – PFA_NB negative –

Narrowband Power Factor Negative

Threshold Alarm fo r Outlet 1.

Bit 10 – PFA_NB positive –

Narrowband Power Factor Positive

Threshold Alarm for Outlet 1.

Bit 11 – PFA_WB negative -

Wideband Power Factor Negative

Threshold Alarm for Outlet 1.

If external temperature is 32 °C

)00?<CR>

Returns:

+10.0

If the line frequency is 60 Hz:

)01?<CR>

Returns:

+60.0

Alarms become “1” when

thresholds exceeded.

Note: Additional Status Alert is

Located at addr 0xBD

(see Table 8)

Note: When AC voltage input is

less than or equal to 10 V

• Only MINVA alarm is active.

• All measurements are

forced to 0 except power
factor, which is forced to 1.

Note: The frequency

measurement is forced to 0 as

long as the SAG voltage alarm

is active.

RMS

,

Rev. 1.1 17

6612_OMU_S2_URT_V1_13 Firmware Description Document FDD_6612_010

total

Output

Irms_nb A

Overcurrent

Event Count

Vrms Under

Voltage

Event Count

Vrms Over

Voltage

Event Count

Vrms A 06 mVrms Vrms voltage.

Location

(hex)

03 1

04 1

05 1

LSB Comment Example

Bit 12 – PFA_WB positive –

Wideband Power Factor Positive

Threshold Alarm for Outlet 1.

Bit 13 – MAXIB_NB – maximum

narrowband current exc eeded on

Outlet 2.

Bit 14 – MAXIB_WB – maximum

wideband current exceeded on

Outlet 2.

Bit 15 – PFB_NB negative –

Narrowband Power Factor Negative

Threshold Alarm for Outlet 2.

Bit 16 – PFB_NB positive

Narrowband Power Factor Positive

Threshold Alarm for Outlet 2.

Bit 17 – PFB_WB negative –

Wideband Power Factor Negative

Threshold Alarm for Outlet 2.

Bit 18– PFB_WB positive

Wideband Power Factor Positive

Threshold Alarm for Outlet 2.

Bit 19 – MAXIT_WB – maximum

total wideband current exceeded on

both Outlet 1 and Outlet 2.

Bit 20 – MAXIT_NB – maximum

narrowband current exc eeded on

both Outlet 1 and Outlet 2.

Bit 21 – CREEP A Alert – Creep

Alert on Outlet 1.

Bit 22 – CREEP B Alert – Creep

Alert on Outlet 2.

Bit 23 – Line/Neutral Reversal

detected.
Bit 24 – Reserved.
Bit 25 – Reserved.

Bit 26 – Unexpected Reset.

Bits 27-31 – Reserved.

Counter increments on each edge

event.

Counter increments on each edge

event.

Counter increments on each edge

event.

–

–

If four narrowband over current

events have occurred on Outlet 1:

)03?<CR>

Returns: +4

If four under voltage events have

occurred:

)04?<CR>

Returns: +4

If four over voltage events have

occurred:

)05?<CR>

Returns: +4

If the line voltage is 120 V

)06?<CR>

Returns:

+120.000

18 Rev. 1.1

FDD_6612_ 010 6612_OMU_S2_URT_V1_13 Firmware Description Document

Location

Output

Watts A 07 mW

Wh A 08 mWh

Total Cost A 09 mUnits Outlet 1 cost of Wh A.

Irms_nb A 0A mArms

VARs_nb A 0B mW

VAs_nb A 0C mW

Power

Factor_nb A

Phase

Angle_nb A

Reserved 0F – Reserved

Vrms A Min 10 mV Minimum Vrms measured.

Vrms A Max 11 mV Maximum Vrms measured.

(hex)

0D –

0E –

LSB Comment Example

Outlet 1 active power

measurement (per second).

Outlet 1 active accumul ated energy

measurement (per hour).

Outlet 1 narrowband rms current

measurement.

Outlet 1 narrowband reactive

power measurement (per second).

Outlet 1 narrowband apparent

power measurement (per second).

Outlet 1 narrowband power factor.

The output will be between -0.950

and 1.000. Positive power factor is

defined as current lagging voltage

(inductive). Negative power factor

is defined as voltage lagging

current (capacitive).

Outlet 1 narrowband phase angle.

The output will be between

180.000 and -180.000.

If 120 Watts are measured on

Outlet 1

)07?<CR>

Returns:

+120.000

If 120 Wh are measured on

Outlet 1

)08?<CR>

Returns:

+120.000

If the cost is 102.536 units on

Outlet 1

)09?<CR>

+102.536

If narrowband current measured on

Outlet 1 is 12 Amps

)0A?<CR>

Returns:

+12.000

If narrowband 120 VA Rs are

measured on Outlet 1

)0B?<CR>

Returns:

+120.000

If narrowband 120 VAs are

measured on Outlet 1

)0C?<CR>

Returns:

+120.000

If the narrowband power factor on

Outlet 1 is 0.95

)0D?<CR>

Returns:

+0.950

If the narrowband phase angle

measured on Outlet 1 is

60 degrees

)0E?<CR>

Returns:

+60.000

Reserved

If the minimum line voltage

measured was 105 V

)10<CR>

Returns:

+15.000

If the maximum line voltage

measured was 130 V

)11<CR>

Returns:

+130.000

Rev. 1.1 19

6612_OMU_S2_URT_V1_13 Firmware Description Document FDD_6612_010

+10.000

Output

Watts A Min 12 mW

Watts A Max 13 mW

Irms_nb A

Min

Irms_nb A

Max

VARs_nb A

Min

VARs_nb A

Max

VAs_nb A

Min

VAs_nb A

Max

Power

Factor_nb A

Min

Power

Factor_nb A

Max

Phase

Angle_nb A

Min

Location

(hex)

14 mArms

15 mArms

16 mW

17 mWs

18 mW

19 mWs

1A –

1B –

1C –

LSB Comment Example

If the minimum power measured on

Minimum Outlet 1 active power

measured (per second).

Maximum Outlet 1 active power

measured (per second).

Outlet 1 minimum narrowband rms

current measured.

Outlet 1 maximum narrowband rms

current measured.

Outlet 1 minimum narrowband
reactive power measured (per

second).

Outlet 1 maximum narrowband

reactive power measured (per

second).

Outlet 1 minimum narrowband

apparent power measured (per

second).

Outlet 1 maximum narrowband

apparent power meas ured (per

second).

Outlet 1 minimum narrowband

power factor measured. Minimum

is defined as the most negative or

least positive number.

Outlet 1 maximum narrowband

power factor measured. Maximum

is defined as the most positive or

least negative number.

If the minimum narrowband phase

Outlet 1 minimum narrowband

phase angle measured.

Outlet 1 is 80 Watts

)12?<CR>

Returns:

+80.000

If the maximum power measured

on Outlet 1 is 200 Watts

)13?<CR>

Returns:

+200.000

If the smallest narrowband current

measured on Outlet 1 is 1 Amp

)14?<CR>

Returns:

+1.000

If the largest narrowband current
measured on Outlet 1 is 30 Amps

)15?<CR>

Returns:

+30.000

If the largest VARs measured on

Outlet 1 is 80 VARs

)16?<CR>

Returns:

+80.000

If the largest narrowband VARs

measured on Outlet 1 is 300VARs

)17?<CR>

Returns:

+300.000

If the smallest narrowband VAs

measured on Outlet 1 is 80 VARs

)18?<CR>

Returns:

+80.000

If the largest narrowband VAs

measured on Outlet 1 is 300VARs

)19?<CR>

Returns:

+300.000

If minimum narrowband power

factor measured on Outlet 1 is -0.6

)1A?<CR> Returns:

-0.600

If maximum narrowband power

factor measured on Outlet 1 is 0.9

)1B?<CR> Returns:

+0.900

angle measured on Outlet 1 is 10

degrees

)1C?<CR>

Returns:

20 Rev. 1.1

FDD_6612_ 010 6612_OMU_S2_URT_V1_13 Firmware Description Document

Location

Output

Phase

Angle_nb A

Max

Reserved 1E – Reserved
Reserved 1F – Reserved

Location

(hex)

1D –

LSB Comment Example

If the maximum narrowband phase

angle measured on Outlet 1 is 70

Outlet 1 maximum narrowband

phase angle measured.

degrees

)1D?<CR>

Returns:

+70.000

Reserved
Reserved

Table 3 list s the wideband m easurement ou tputs for Outlet 1.

Table 3: Outlet 1 MPU Outputs for Wideband Method

Output

Delta

Temperature

Line

Frequency

Alarm Status 22

(hex)

20 0.1 °C

21 0.1 Hz

LSB Comment Example

Temperature difference from 22° C.

Note: Duplicate of address 0x00

(see Table 2)

Line Frequency

Note: Duplicate of address 0x01

(see Table 2)

Definiti on for Status Register

Bit 0 – Minimum Temperature

Alarm.

Bit 1 – Maximum Temperature Alarm.

Bit 2 – Minimum Frequency Alarm.

Bit 3 – Maximum Frequency Alarm.

Bit 4 - SAG Voltage Alarm.

Bit 5 – MINVA – under minimum

voltage on VA input.

Bit 6 – MAXVA – over maximum

voltage on VA input.

Bit 7 – MAXIA_NB – maximum

narrowband current exc eeded on

Outlet 1.

Bit 8 – MAXIA_WB – maximum

wideband current exceeded on

Outlet 1.

Bit 9 – PFA_NB negative –

Narrowband Power Factor Negative

Threshold Alarm for Outlet 1.

Bit 10 – PFA_NB positive –

Narrowband Power Factor Positive

Threshold Alarm for Outlet 1.

Bit 11 – PFA_WB negative -

Wideband Power Factor Negative

Threshold Alarm for Outlet 1.

Bit 12 – PFA_WB positive –

Wideband Power Factor Positive

Threshold Alarm for Outlet 1.

Bit 13 – MAXIB_NB – maximum

narrowband current exc eeded on

Outlet 2.

If external temperature is 32 °C

)20?<CR>

Returns:

+10.0

If the line frequency is 60 Hz:

)21?<CR>

Returns:

+60.0

Alarms become “1” when

thresholds exceeded.

Note: Additional Status Alert is

Located at addr 0xBD (see Table 8)

Note: When AC voltage input is less

than or equal to 10 V

• Only MINVA alarm is active.

• All measurements are forced

to 0 except power factor,
which is forced to 1.

Note: The frequency measurement

is forced to 0 as long as the SAG

voltage alarm is active.

RMS

,

Rev. 1.1 21

6612_OMU_S2_URT_V1_13 Firmware Description Document FDD_6612_010

Output

Irms_wb A

Overcurrent

Event Count

Vrms Under

Voltage

Event Count

Vrms Over

Voltage

Event Count

Vrms A 26 mV

Watts A 27 mW

Location

(hex)

23

24

25

LSB Comment Example

Bit 14 – MAXIB_WB – maximum

wideband current exceeded on

Outlet 2.

Bit 15 – PFB_NB negative –

Narrowband Power Factor Negative

Threshold Alarm for Outlet 2.

Bit 16 – PFB_NB positive

Narrowband Power Factor Positive

Threshold Alarm for Outlet 2.
Bit 17 – PFB_WB negative –

Wideband Power Factor Negative

Threshold Alarm for Outlet 2.

Bit 18– PFB_WB positive –

Wideband Power Factor Positive

Threshold Alarm for Outlet 2.

Bit 19 – MAXIT_WB – maximum

total wideband current exceeded on

both Outlet 1 and Outlet 2.

Bit 20 – MAXIT_NB

total narrowband current exceeded

on both Outlet 1 and Outlet 2.

Bit 21 – CREEP A Alert – Creep

Alert on Outlet 1.

Bit 22 – CREEP B Alert – Creep

Alert on Outlet 2.

Bit 23 – Line/Neutral Reversal

detected.
Bit 24 – Reserved.
Bit 25 – Reserved.

Bit 26 – Unexpected Reset.

Bits 27-31 – Reserved.

Note: Duplicate of address 0x02

(see Table 2)

Counter increments on each edge

Counter increments on each edge

Note: Duplicate of address 0x04

(see Table 2).

Counter increments on each edge

Note: Duplicate of address 0x06

(see Table 2).

Vrms voltage

Note: Duplicate of address 0x06

(see Table 2).

Outlet 1 active power

measurement (per second).

Note: Duplicate of address 0x07

(see Table 2).

– maximum

event.

event.

event.

–

If four wideband over current

events have occurred on Outlet 1:

)23?<CR>

Returns: +4

If four under voltage events have

occurred:

If four over voltage events have

If the line voltage is 120 V

If 120 Watts are measured on

)24?<CR>

Returns: +4

occurred:

)25?<CR>

Returns: +4

)26?<CR>

Returns:

+120.000

Outlet 1

)27?<CR>

Returns:

+120.000

22 Rev. 1.1

FDD_6612_ 010 6612_OMU_S2_URT_V1_13 Firmware Description Document

+12.000

Output

Wh A 28 mWh

Total Cost A 29 mUnits

Irms_wb A 2A mA

VARs_wb A 2B mW

VAs_wb A 2C mW

Power

Factor_wb A

Phase

Angle_wb A

Reserved 2F – Reserved

Vrms A Min 30 mV

Vrms A Max 31 mV

Watts A Min 32 mW

Location

(hex)

2D

2E –

LSB Comment Example

Outlet 1 active accumul ated energy

measurement (per hour).

Note: Duplicate of address 0x08

(see Table 2).

Outlet 1 cost of Wh A.

Note: Duplicate of address 0x09

(see Table 2).

Outlet 1 wideband rms current

measurement.

Outlet 1 wideband reactive power

measurement (per second).

Outlet 1 wideband apparent power

measurement (per second).

Outlet 1 wideband power factor.

The output will be between -0.950

and 1.000. Positive power factor is

–

defined as current lagging voltage

(inductive). Negative power factor

is defined as voltage lagging

current (capacitive).

Outlet 1 wideband phase angle.

The output will be between

180.000 and -180.000.

Minimum Vrms measured

Note: Duplicate of address 0x10

(see Table 2).

Maximum Vr ms measured

Note: Duplicate of address 0x11

(see Table 2).

Minimum Outlet 1 active power

measured (per second)

Note: Duplicate of address 0x12

(see Table 2)

If 120 Wh are measured on

Outlet 1

)28?<CR>

Returns:

+120.000

If the cost is 102.536 units on

Outlet 1

)29?<CR>

+102.536

If narrowband current measured on

Outlet 1 is 12 Amps

)2A?<CR>

Returns:

If narrowband 120 VARs are

measured on Outlet 1

)2B?<CR>

Returns:

+120.000

If narrowband 120 VAs are

measured on Outlet 1

)2C?<CR>

Returns:

+120.000

If the narrowband power factor on

Outlet 1 is 0.95

)2D?<CR>

Returns:

+0.950

If the narrowband phase angle

measured on Outlet 1 is 60

degrees

)2E?<CR>

Returns:
+60.000

Reserved

If the minimum line voltage

measured was 105 V

)30<CR>

Returns:
+15.000

If the maximum line voltage

measured was 130 V

)31<CR>

Returns:

+130.000

If the minimum power measured on

Outlet 1 is 80 Watts

)32?<CR>

Returns:
+80.000

Rev. 1.1 23

6612_OMU_S2_URT_V1_13 Firmware Description Document FDD_6612_010

Output

Watts A Max 33 mW

Irms_wb A

Min

Irms_wb A

Max

VARs_wb A

Min

VARs_wb A

Max

VAs_wb A

Min

VAs_wb A

Max

Power

Factor_wb A

Min

Power

Factor_wb A

Max

Phase

Angle_wb A

Min

Phase

Angle_wb A

Max

Reserved 3E – Reserved

Location

(hex)

34 mArms

35 mArms

36 mW

37 mW

38 mW

39 mW

3A –

3B –

3C

3D –

LSB Comment Example

Maximum Outlet 1 active power

measured (per second)

Note: Duplicate of address 0x13

(see Table 2).

Outlet 1 minimum wideband rms

current measured.

Outlet 1 maximum wideband rms

current measured.

Outlet 1 minimum wideband

reactive power measured (per

second).

Outlet 1 maximum wideband

reactive power measured (per

second).

Outlet 1 minimum wideband

apparent power meas ured (per

second).

Outlet 1 maximum wideband

apparent power measured (per

second).

Outlet 1 minimum wideband power

factor measured. Minimum is

defined as the most negative or

least positive number.

Outlet 1 maximum wideband power

factor measured. Max imu m is
defined as the most positive or

least negative number.

–

Outlet 1 minimum wideband phase

angle measured.

Outlet 1 maximum wideband phase

angle measured.

If the maximum power measured

on Outlet 1 is 200 Watts

)33?<CR>

Returns:

+200.000

If the smallest narrowband current

measured on Outlet 1 is 1 Amp

)34?<CR>

Returns:

+1.000

If the largest narrowband current

measured on Outlet 1 is 30 Amps

)35?<CR>

Returns:
+30.000

If the largest VARs measured on

Outlet 1 is 80 VARs

)36?<CR>

Returns:
+80.000

If the largest VARs measured on

Outlet 1 is 300 VARs

)37?<CR>

Returns:

+300.000

If the smallest VAs measured on

Outlet 1 is 80 VARs

)38?<CR>

Returns:
+80.000

If the largest VAs measured on

Outlet 1 is 300 VARs

)39?<CR>

Returns:

+300.000

If minimum narrowband power

factor measured on Outlet 1 is –0.6

)3A?<CR> Returns:

-0.600

If maximum narrowband power

factor measured on Outlet 1 is 0.9

)3B?<CR> Returns:

+0.900

If the minimum narrowband phase

angle measured on Outlet 1 is 10

degrees

)3C?<CR>

Returns:
+10.000

If the maximum narrowband phase

angle measured on Outlet 1 is 70

degrees

)3D?<CR>

Returns:
+70.000

Reserved

24 Rev. 1.1

FDD_6612_ 010 6612_OMU_S2_URT_V1_13 Firmware Description Document

exceeded on Outlet 2.

Output

Reserved 3F – Reserved

Location

(hex)

LSB Comment Example

Reserved

Table 4 lists the narrowband m easurement output s for Outlet 2.

Table 4: Outlet 2 MPU Outputs for Narrowband Method

Output

Delta

Temperature

Line

Frequency

Alarm Status 42

Location

(hex)

40 0.1 °C

41 0.1 Hz

LSB Comment Example

Temperature difference from

22° C. Note: Duplicate of

address 0x00 (see Table 2).

Line Frequency

Note: Duplicate of address

0x01 (see Table 2).

Definiti o n for Status Register

Bit 0 – Minimum Temperature

Alarm.

Bit 1 – Maximum Temperature

Alarm.

Bit 2 – Minimum Frequency

Alarm.

Bit 3 – Maximum Frequency

Alarm.

Bit 4 – SAG Voltage Alarm.

Bit 5 – MINVA – under

minimum voltage on VA input.

Bit 6 – MAXVA – over

maximum voltage on VA input.
Bit 7 – MAXIA_NB – maximum

narrowband current exceeded

on Outlet 1.

Bit 8 – MAXIA_WB – maximum

wideband current exceeded on

Outlet 1.

Bit 9 – PFA_NB negative –

Narrowband Power Factor

Negative Threshold Alarm for

Outlet 1.

Bit 10 – PFA_NB positive –

Narrowband Power Factor

Positive Threshold Alarm for

Outlet 1.

Bit 11 – PFA_WB negative –

Wideband Power Factor

Negative Threshold Alarm for

Outlet 1.

Bit 12 – PFA_WB positive –

Wideband Power Factor

Positive Threshold Alarm for

Outlet 1.

Bit 13 – MAXIB_NB –

maximum narrowband current

exceeded on Outlet 2.

Bit 14 – MAXIB_WB –

maximum wideband current

If external temperature is 32 °C

)40?<CR>

Returns:

+10.0

If the line frequency is 60 Hz:

)41?<CR>

Returns:

+60.0

Alarms become “1” when thresholds

exceeded.

Note: Additional Status Alert is Located

at addr 0xBD (see Table 8).

Note: When AC voltage input is less

than or equal to 10 V

• Only MINVA alarm is active.

• All measurements are forced to

0 except power factor, which is
forced to 1.

Note: The frequency measurement is

forced to 0 as long as the SAG voltage

alarm is active.

RMS

,

Rev. 1.1 25

6612_OMU_S2_URT_V1_13 Firmware Description Document FDD_6612_010

Output

Irms_nb B

Overcurrent

Event Count

Vrms Under

Voltage

Event Count

Vrms Over

Voltage

Event Count

Vrms A 46 mV

Watts B 47 mW

Location

(hex)

43

44

45

LSB Comment Example

Bit 15 – PFB_NB negative –

Narrowband Power Factor

Negative Threshold Alarm for

Outlet 2.

Bit 16 – PFB_NB positive

Narrowband Power Factor

Positive Threshold Alarm for

Outlet 2.

Bit 17 – PFB_WB negative –

Wideband Power Factor

Negative Threshold Alarm for

Outlet 2.

Bit 18– PFB_WB positive –

Wideband Power Factor

Positive Threshold Alarm for

Outlet 2.

Bit 19 – MAXIT_WB
maximum total wideband
current exceeded on both

Outlet 1 and Outlet 2.
Bit 20 – MAXIT_NB –

maximum total narrowband

current exceeded on both

Outlet 1 and Outlet 2.

Bit 21 – CREEP A Alert –

Creep Alert on Outlet 1.

Bit 22 – CREEP B Alert –

Creep Alert on Outlet 2.

Bit 23 – Line/Neutral Reversal

detected.
Bit 24 – Reserved.
Bit 25 – Reserved.

Bit 26 – Unexpected Reset.

Bits 27-31 – Reserved.

Note: Duplicate of address

0x02 (see Table 2).

Counter increments on each

edge event.

Counter increments on each

edge event.

Note: Duplicate of address

0x04 (see Table 2).

Counter increments on each

edge event.

Note: Duplicate of address

0x06 (see Table 2).

Vrms voltage

Note: Duplicate of address

0x06 (see Table 2).

Outlet 2 active power

measurement (per second).

–

–

If four narrowband over current events

have occurred on Outlet 2:

)43?<CR>

Returns: +4

If four under voltage events have

occurred:

)44?<CR>

Returns: +4

If 4 over voltage events have occurred:

)45?<CR>

Returns: +4

If the line voltage is 120 V

)46?<CR>

Returns:

+120.000

If 120 Watts are measured on Outlet 2

)47?<CR>

Returns:

+120.000

26 Rev. 1.1

FDD_6612_ 010 6612_OMU_S2_URT_V1_13 Firmware Description Document

+120.000

Output

Wh B 48 mWh

Total Cost B 49 mUnits Outlet 2 cost of Wh B.

Irms_nb B 4A mArms

VARs_nb B 4B mW

VAs_nb B 4C mW

Location

(hex)

LSB Comment Example

If 120 Wh are measured on

Outlet 2 active accumul ated

energy measurement (per

hour).

If the total cost is 102.536 units on

If narrowband current measured on

Outlet 2 narrowband rms

current measurement.

If narrowband 120 VARs are measured

Outlet 2 narrowband reactive

power measurement (per

second).

If narrowband 120 VAs are measured

Outlet 2 narrowband apparent

power measurement (per

second).

Outlet 2

)48?<CR>

Returns:

+120.000

Outlet 2

)49?<CR>

+102.536

Outlet 2 is 12 Amps

)4A?<CR>

Returns:
+12.000

on Outlet 2

)4B?<CR>

Returns:

+120.000

on Outlet 2
)4C?<CR>

Returns:

Power

Factor_nb B

Phase

Angle_nb B

Reserved 4F

Vrms A Min 50 mV

Vrms A Max 51 mV

Watts B Min 52 mW

4D

4E –

–

–

Outlet 2 narrowband power

factor. The output will be

between -0.950 and 1.000.

Positive power factor is defined

as current lagging voltage

(inductive). Negative power

factor is defined as voltage

lagging current (capacitive).

Outlet 2 narrowband phase

angle. The output will be

between 180.000 and

-180.000.
Reserved

Minimum Vrms measured

Note: Duplicate of address

0x10 (see Table 2).

Maximum Vrms measured

Note: Duplicate of address

0x11 (see Table 2).

Minimum Outlet 2 active power

measured (per second).

If the narrowband power factor on

Outlet 2 is 0.95

)4D?<CR>

Returns:

+0.950

If the narrowband phase angle

measured on Outlet 2 is 60 degrees

)4E?<CR>

Returns:
+60.000

Reserved

If the minimum line voltage measured

was 105 V

)50<CR>

Returns:
+15.000

If the maximum line voltage measured

was 130 V

)51<CR>

Returns:

+130.000

If the minimum power measured on

Outlet 2 is 80 Watts

)52?<CR>

Returns:
+80.000

Rev. 1.1 27

6612_OMU_S2_URT_V1_13 Firmware Description Document FDD_6612_010

Output

Watts B Max 53 mW

Irms_nb B

Min

Irms_nb B

Max

VARs_nb B

Min

VARs_nb B

Max

VAs_nb B

Min

VAs_nb B

Max

Power

Factor_nb B

Min

Power

Factor_nb B

Max

Phase

Angle_nb B

Min

Location

(hex)

54 mArms

55 mArms

56 mW

57 mW

58 mW

59 mW

5A

5B

5C

LSB Comment Example

If the maximum power measured on

Maximum Outlet 2 active power

measured (per second).

Outlet 2 minimum narrowband

rms current measured.

Outlet 2 maximum narrowband

rms current measured.

If the largest VARs measured on Outlet

Outlet 2 minimum narrowband
reactive power measured (per

second).

Outlet 2 maximum narrowband

reactive power measured (per

second).

Outlet 2 minimum narrowband

apparent power meas ured (per

second)

Outlet 2 maximum narrowband

apparent power meas ured (per

second).

Outlet 2 minimum narrowband

power factor measured.

–

–

–

Minimum is defined as the

most negative or least positive

number.

Outlet 2 maximum narrowband

power factor measured.

Maximum is defined as the

most positive or least negative

number.

Outlet 2 minimum narrowband

phase angle measured.

If minimum narrowband power factor

If maximum narrowband power factor

Outlet 2 is 200 Watts

)53?<CR>

Returns:

+200.000

If the smallest narrowband current

measured on Outlet 2 is 1 Amp

)54?<CR>

Returns:

+1.000

If the largest narrowband current

measured on Outlet 2 is 30 Amps

)55?<CR>

Returns:
+30.000

2 is 80 VARs

)56?<CR>

Returns:
+80.000

If the largest narrowband VARs

measured on Outlet 2 is

300 VARs
)57?<CR>

Returns:

+300.000

If the smallest narrowband VAs

measured on Outlet 2 is 80 VARs

)58?<CR>

Returns:
+80.000

If the largest narrowband VAs

measured on Outlet 2 is

300 VARs
)59?<CR>

Returns:

+300.000

measured on Outlet 2 is

-0.6

)5A?<CR> Returns:

-0.600

measured on Outlet 2 is 0.9

)5B?<CR> Returns:

+0.900

If the minimum narrowband phase

angle measured on Outlet 2 is 10

degrees

)5C?<CR>

Returns:
+10.000

28 Rev. 1.1

FDD_6612_ 010 6612_OMU_S2_URT_V1_13 Firmware Description Document

–

Output

Phase

Angle_nb B

Max

Reserved 5E – Reserved
Reserved 5F

Location

(hex)

5D –

LSB Comment Example

If the maximum narrowband phase

angle measured on Outlet 2 is 70

Outlet 2 maximum narrowband

phase angle measured.

Reserved

degrees

)5D?<CR>

Returns:
+70.000

Reserved
Reserved

Rev. 1.1 29

6612_OMU_S2_URT_V1_13 Firmware Description Document FDD_6612_010

Temperature difference from 22° C.

Table 5 lists the wideband measurement outputs for Outlet 2.

Table 5: Outlet 2 MPU Outputs for Wideband Method

Output

Delta

Temperature

Line

Frequency

Alarm Status 62

Location

(hex)

60 0.1 °C

61 0.1 Hz

LSB Comment Example

Note: Duplicate of address 0x00

Table 2).

(see

Line Frequency

Note: Duplicate of address 0x01

(see Table 2).

Definiti o n for Status Register

Bit 0 – Minimum Temperature

Alarm.

Bit 1 – Maximum Temperature

Alarm.

Bit 2 – Minimum Frequency Alarm.

Bit 3 – Maximum Frequency Alarm.

Bit 4 - SAG Voltage Alarm.

Bit 5 – MINVA – under minimum

voltage on VA input.

Bit 6 – MAXVA – over maximum

voltage on VA input.

Bit 7 – MAXIA_NB – maximum

narrowband current exc eeded on

Outlet 1.

Bit 8 – MAXIA_WB – maximum

wideband current exceeded on

Outlet 1.

Bit 9 – PFA_NB negative –

Narrowband Power Factor

Negative Threshold Alarm for

Outlet 1.

Bit 10 – PFA_NB positive –

Narrowband Power Factor Positive

Threshold Alarm for Outlet 1.

Bit 11 – PFA_WB negative -

Wideband Power Factor Negative

Threshold Alarm for Outlet 1.

Bit 12 – PFA_WB positive –

Wideband Power Factor Positive

Threshold Alarm for Outlet 1.

Bit 13 – MAXIB_NB – maximum

narrowband current exc eeded on

Outlet 2.

Bit 14 – MAXIB_WB – maximum

wideband current exceeded on

Outlet 2.

Bit 15 – PFB_NB negative –

Narrowband Power Factor

Negative Threshold Alarm for

Outlet 2.

Bit 16 – PFB_NB positive –

Narrowband Power Factor Positive

Threshold Alarm for Outlet 2.

If external temperature is 32 °C

)60?<CR>

Returns:

+10.0

If the line frequency is 60 Hz:

)61?<CR>

Returns:

+60.0

Alarms become “1” when

thresholds exceeded.

Note: Additional Status Alert is

Located at addr 0xBD

(see Table 8).

Note: When AC voltage input is

less than or equal to 10 V

• Only MINVA alarm is
active.

• All measurements are
forced to 0 except power
factor, which is forced to 1.

Note: The frequency

measurement is forced to 0 as

long as the SAG voltage alarm is

active.

RMS

,

30 Rev. 1.1

FDD_6612_ 010 6612_OMU_S2_URT_V1_13 Firmware Description Document

Output

Irms_wb B

Overcurrent

Event Count

Vrms Under

Voltage

Event Count

Vrms Over

Voltage

Event Count

Vrms A 66 mV

Watts B 67 mW

Wh B 68 mWh

Total Cost B 69 mUnits

Location

(hex)

63

64

65

LSB Comment Example

Bit 17 – PFB_WB negative –

Wideband Power Factor Negative

Threshold Alarm for Outlet 2.

Bit 18– PFB_WB positive –

Wideband Power Factor Positive

Threshold Alarm for Outlet 2.

Bit 19 – MAXIT_WB – maximum
total wideband current exceeded

on both Outlet 1 and Outlet 2.

Bit 20 – MAXIT_NB – maximum

total narrowband current exceeded

on both Outlet 1 and Outlet 2.

Bit 21 – CREEP A Alert – Creep

Alert on Outlet 1.

Bit 22 – CREEP B Alert – Creep

Alert on Outlet 2.

Bit 23 – Line/Neutral Reversal

detected.
Bit 24 – Reserved.
Bit 25 – Reserved.

Bit 26 – Unexpected Reset.

Bits 27-31 – Reserved.

Note: Duplicate of address 0x02

Counter increments on each edge

Counter increments on each edge

Note: Duplicate of address 0x04

Counter increments on each edge

Note: Duplicate of address 0x06

Note: Duplicate of address 0x06

Outlet 2 active power

measurement (per second)

Note: Duplicate of address 0x47

Outlet 2 active accumul ated energy

measurement (per hour)

Note: Duplicate of address 0x48

Outlet 2 cost of Wh B

Note: Duplicate of address 0x49

(see Table 2)

event.

event.

(see Table 2).

event.

(see Table 2).

Vrms voltage

(see Table 2).

(see Table 4).

(see Table 4).

(see Table 4).

If four wideband over current

events have occurred on Outlet 2:

)63?<CR>

Returns: +4

If 4 under voltage events have

occurred:

)64?<CR>

Returns: +4

If 4 over voltage events have

occurred:

)65?<CR>

Returns: +4

If the line voltage is 120 V

)66?<CR>

Returns:

+120.000

If 120 Watts are measured on

Outlet 2

)67?<CR>

Returns:

+120.000

If 120 Wh are measured on

Outlet 2

)68?<CR>

Returns:

+120.000

If the total cost is 102.536 units on

Outlet 2

)69?<CR>

+102.536

Rev. 1.1 31

6612_OMU_S2_URT_V1_13 Firmware Description Document FDD_6612_010

Output

Irms_wb B 6A mArms

VARs_wb B 6B mW

VAs_wb B 6C mW

Power

Factor_wb B

Phase

Angle_wb B

Reserved 6F – Reserved

Vrms A Min 70 mV

Vrms A Max 71 mV

Watts B Min 72 mW

Watts B Max 73 mW

Irms_wb B

Min

Location

(hex)

6D

6E mDegrees

74 mArms

LSB Comment Example

If wideband current measured on

Outlet 2 wideband rms current

measurement.

Outlet 2 wideband reactive power

measurement (per second).

Outlet 2 wideband apparent power

measurement (per second).

Outlet 2 wideband power factor.

The output will be between -0.950

and 1.000. Positive power factor is

–

defined as current lagging voltage

(inductive). Negative power factor

is defined as voltage lagging

current (capacitive).

Outlet 2 wideband phase angle.

The output will be between

180.000 and -180.000.

Minimum Vrms measured

Note: Duplicate of address 0x10

(see Table 2).

Maximum Vrms measured

Note: Duplicate of address 0x11

(see Table 2).

Minimum Outlet 2 active power

measured (per second)

Note: Duplicate of address 0x52

(see Table 4).

Maximum Outlet 2 active power

measured (per second)

Note: Duplicate of address 0x53

(see Table 4).

Outlet 2 minimum wideband rms

current measured.

Outlet 2 is 12 Amps

)6A?<CR>

Returns:
+12.000

If wideband 120 VARs are

measured on Outlet 2

)6B?<CR>

Returns:

+120.000

If wideband 120 VAs are

measured on Outlet 2

)6C?<CR>

Returns:

+120.000

If the wideband power factor on

Outlet 2 is 0.95

)6D?<CR>

Returns:

+0.950

If the wideband phase angle

measured on Outlet 2 is

60 degrees

)6E?<CR>

Returns:
+60.000

Reserved

If the minimum line voltage

measured was 105 V

)70<CR>

Returns:
+15.000

If the maximum line voltage

measured was 130 V

)71<CR>

Returns:

+130.000

If the minimum power measured

on Outlet 2 is 80 Watts

)72?<CR>

Returns:
+80.000

If the maximum power measured

on Outlet 2 is 200 Watts

)73?<CR>

Returns:

+200.000

If the smallest wideband current

measured on Outlet 2 is 1 Amp

)74?<CR>

Returns:

+1.000

32 Rev. 1.1

FDD_6612_ 010 6612_OMU_S2_URT_V1_13 Firmware Description Document

Output

Irms_wb B

Max

VARs_wb B

Min

VARs_wb B

Max

VAs_wb B

Min

VAs_wb B

Max

Power

Factor_wb B

Min

Power

Factor_wb B

Max

Phase

Angle_wb B

Min

Phase

Angle_wb B

Max

Reserved 7E
Reserved 7F – Reserved

Location

(hex)

75 mArms

76 mW

77 mW

78 mW

79 mW

7A

7B –

7C mDegrees

7D mDegree

LSB Comment Example

If the largest wideband current

Outlet 2 maximum wideband rms

current measured.

Outlet 2 minimum wideband

reactive power measured (per

second).

Outlet 2 maximum wideband

reactive power measured (per

second).

Outlet 2 minimum wideband

apparent power meas ured (per

second).

Outlet 2 maximum wideband

apparent power meas ured (per

second).

Outlet 2 minimum wideband power

factor measured. Minimum is

defined as the most negative or

least positive number.

Outlet 2 maximum wideband power

factor measured. Max imu m is
defined as the most positive or

least negative number.

Outlet 2 minimum wideband phase

angle measured.

Outlet 2 maximum wideband phase

angle measured.

–

Reserved

measured on Outlet 2 is 30 Amps

)75?<CR>

Returns:
+30.000

If the largest VARs measured on

Outlet 2 is 80 VARs

)76?<CR>

Returns:
+80.000

If the largest VARs measured on

Outlet 2 is 300 VARs

)77?<CR>

Returns:

+300.000

If the smallest VAs measured on

Outlet 2 is 80 VARs

)78?<CR>

Returns:
+80.000

If the largest VAs measured on

Outlet 2 is 300 VARs

)79?<CR>

Returns:

+300.000

If minimum wideband power factor

measured on Outlet 2 is –0.6

)7A?<CR> Returns:

-0.600

If maximum wideband power

factor measured on Outlet 2 is 0.9

)7B?<CR> Returns:

+0.900

If the minimum wideband phase

angle measured on Outlet 2 is

10 degrees

)7C?<CR>

Returns:
+10.000

If the maximum wideband phase

angle measured on Outlet 2 is

70 degrees

)7D?<CR>

Returns:

+70.000
Reserved
Reserved

Rev. 1.1 33

6612_OMU_S2_URT_V1_13 Firmware Description Document FDD_6612_010

+120.000

Table 6 list s the narrowband measurement outputs for both outlets combined (Outlet 1 + Outlet 2).

Table 6: Combined Outlets MPU Outputs for Narrowband Method

Output

Watts T 80 mW

Wh T 81 mWh

Total Cost T 82 mUnits Total Cost of Wh for both outlets.

Irms_nb T 83 mArms

VARs_nb T 84 mW

VAs_nb T 85 mW

Irms_nb T

Overcurrent

Event

Count

Reserved 87

Watts T Min 88 mW

Watts T

Max

Irms_nb T

Min

Location

(hex)

86

89 mW

8A mArms

LSB Comment Example

Active power measurement (per

second) on both outlets.

Active accumulated energy

measurement (per hour) on both

outlets.

Combined outlet narrowband rms

current measurement.

Combined outlet narrowband

reactive power measurement (per

second).

Combined outlet narrowband

apparent power measurement (per

second).

Counter increments on each edge

event.

–

Minimum combined outlet active

power measured (per second).

Maximum combined active power

Minimum combined outlet

narrowband rms current measured.

Reserved

measured (per second).

If 120 Watts are measured on both

outlets

)80?<CR>

Returns:

If 120 Wh are measured on

Outlet 2

)81?<CR>

Returns:

+120.000

If the total cost is 102.536 units on

both outlets

)82?<CR>

+102.536

If narrowband current measured on

both outlets is 12 Amps

)83?<CR>

Returns:
+12.000

If narrowband 120 VARs are

measured on both outlets

)84?<CR>

Returns:

+120.000

If narrowband 120 VAs are

measured on both outlets

)85?<CR>

Returns:

+120.000

If four narrowband over current

events have occurred on Outlet 1

and Outlet 2:

)86?<CR>

Returns:

+4

Reserved

If the minimum power measured on

both outlets is 80 Watts

)88?<CR>

Returns:
+80.000

If the maximum power measured

on both outlets is 200 Watts

)89?<CR>

Returns:

+200.000

If the smallest narrowband current
measured on both outlets is 1 Amp

)8A?<CR>

Returns:

+1.000

34 Rev. 1.1

FDD_6612_ 010 6612_OMU_S2_URT_V1_13 Firmware Description Document

Output

Irms_nb T

Max

VARs_nb T

Min

VARs_nb T

Max

VAs_nb T

Min

VAs_nb T

Max

Location

(hex)

8B mArms

8C mW

8D mW

8E mW

8F mW

LSB Comment Example

If the largest narrowband current

measured on both outlets is 30

Maximum co mbined outlet

narrowband rms current measured.

Minimum combined outlet

narrowband reactive power

measured (per second).

Maximum co mbined outlet

narrowband reactive power

measured (per second).

Minimum combined outlet

narrowband apparent power

measured (per second).

Maximum co mbined outlet

narrowband apparent power

measured (per second).

If the largest narrowband VARs

measured on both outlets is 80

If the largest narrowband VARs

measured on both outlets is 300

If the smallest narrowband VAs

measured on both outlets is 80

If the largest narrowband VAs

measured on both outlets is 300

Amps

)8B?<CR>

Returns:
+30.000

VARs

)8C?<CR>

Returns:
+80.000

VARs

)8D?<CR>

Returns:

+300.000

VARs

)8E?<CR>

Returns:
+80.000

VARs

)8F?<CR>

Returns:

+300.000

Rev. 1.1 35

6612_OMU_S2_URT_V1_13 Firmware Description Document FDD_6612_010

+120.000

Table 7 lists the wideband measurement outputs for both outlets combined (Outle t 1 + O utle t 2).

Table 7: Combined Outlets MPU Outputs for Wideband Method

Output

Watts T 90 mW

Wh T 91 mWh

Total Cost T 92 mUnits

Irms_wb T 93 mArms

VARs_wb T 94 mW

VAs_wb T 95 mW

Irms_wb T

Overcurrent

Event

Count

Reserved 97

Watts T Min 98 mW

Watts T

Max

Irms_wb T

Min

Location

(hex)

96

99 mW

9A mArms

LSB Comment Example

–

Active power measurement (per

second) on both outlets.

Note: Duplicate of address 0x80

(see Table 6).

Active accumulated energy

measurement (per hour) on both

outlets.

Note: Duplicate of address 0x81

(see Table 6).

Total Cost of Wh for both outlets.

Note: Duplicate of address 0x82

(see Table 6).

Combined outlet wideband rms

current measurement.

Combined outlet wideband reactive

power measurement (per second).

Combined outlet wideband

apparent power meas urement (per

second).

Counter increments on each edge

event.

Reserved

Minimum combined outlet active

power measured (per second)

Note: Duplicate of address 0x88

(see Table 6).

Maximum combined outlet active

power measured (per second)

Note: Duplicate of address 0x89

(see Table 6).

Minimum combined outlet

wideband rms current measured.

If 120 Watts are measured on both

outlets

)90?<CR>

Returns:

If 120 Wh are measured on

Outlet 2

)91?<CR>

Returns:

+120.000

If the total cost is 102.536 units on

both outlets

)92?<CR>

+102.536

If wideband current measured on

both outlets is 12 Amps

)93?<CR>

Returns:
+12.000

If wideband 120 VARs are

measured on both outlets

)94?<CR>

Returns:

+120.000

If wideband 120 VAs are measured

on both outlets

)95?<CR>

Returns:

+120.000

If four wideband over current

events have occurred on Outlet 1

and Outlet 2:

)96?<CR>

Returns:

+4

Reserved

If the minimum power measured on

both outlets is 80 Watts

)98?<CR>

Returns:
+80.000

If the maximum power measured

on both outlets is 200 Watts

)99?<CR>

Returns:

+200.000

If the smallest wideband current

measured on both outlets is 1 Amp

)9A?<CR>

Returns:

+1.000

36 Rev. 1.1

FDD_6612_ 010 6612_OMU_S2_URT_V1_13 Firmware Description Document

Output

Irms_wb T

Max

VARs_wb T

Min

VARs_wb T

Max

VAs_wb T

Min

VAs_wb T

Max

Location

(hex)

9B mArms

9C mW

9D mW

9E mW

9F mW

LSB Comment Example

If the largest wideband current
measured on both outlets is 30

Maximum co mbined outlet

wideband rms current measured.

Minimum combined outlet

wideband reactive power

measured (per second).

Maximum co mbined outlet

wideband reactive power

measured (per second).

Minimum combined outlet

wideband apparent power

measured (per second).

Maximum co mbined outlet

wideband apparent power

measured (per second).

If the largest VARs measured on

both outlets is 80 VARs

If the largest VARs measured on

both outlets is 300 VARs

If the smallest VAs measured on

both outlets is 80 VARs

If the largest VAs measured on

both outlets is 300 VARs

Amps

)9B?<CR>

Returns:
+30.000

)9C?<CR>

Returns:
+80.000

)9D?<CR>

Returns:

+300.000

)9E?<CR>

Returns:
+80.000

)9F?<CR>

Returns:

+300.000

Rev. 1.1 37

6612_OMU_S2_URT_V1_13 Firmware Description Document FDD_6612_010

6 Configuration Parameter Entry

6.1 MPU Param eters

Table 8 l i sts the MPU parameters that th e Firmware 6612_OMU_ S2_UR T_V1_13 has configured. The
user does n ot need t o alter any of these parameters wh i le u sing t he demo unit.

Table 8: MPU Par ameters

MPU

Parameter

Location

(hex)

LSB Default Comment Example

External rm s voltage

cor r e s po ndi ng to 250 m Vpk at

the VA input of the 78M6612.

VMAX A A0 mVrms +600.000

It must be set high enough to

account for overvol tages.

Usu al ly set to 600 V

(600.000d).

Mini mum current value to be

measured on the IA input.

Starting IA A1 mArms +0.007

Currents b elow this value will

be ignored. Also known as

CRE EP IA.

External rm s current

IMAX A A2 mArms +52.000

cor r e s po ndi ng to 250 m Vpk at

the IA input of the 78M6612.

Mini mum current value to be

measured on the IB input.

Starting IB A3 mArms +0.007

Currents b elow this value will

be ignored. Also known as

CREEP IB

External rm s current

IMAX B A4 mArms +52.000

cor r e s po ndi ng to 250 m Vpk at

the IB input of the 78M6612.

Unused A5 – –

VMAX on channel A is

600 V for headroom. For

adde d ma r gin, VMAX

coul d be s et as fol l ows:

VMAX =

(Vpk/√2)(2E06+75)/750

= 478.581

)A0=+471.581<CR>

Default setting is 7 mA.

If start current on

channel A desired is 10

mA:

)A1=+0.010<CR>

The default is set to 52

Amps for overhead. For

added margin, in a

system using current

shunts IMAX coul d be

changed as fol l ows:

IMAX = (Vpk/√2)/R

shunt

For a 4 mΩ current

shunt IM AX =44.19 Amps

To set IMAX A:

)A2=+44.190<CR>

Default setting is 7 mA.

If start current on

channel B desired is 10

mA:

)A3=+0.010<CR>

The default is set to 52

Amps for overhead. For

added margin, in a

system using current

shunts IMAX coul d be

changed as fol l ows:

IMAX = (Vpk/√2)/R

shunt

For a 4 mΩ current

shunt IM AX =44.19 Amps

)A4=+44.190<CR>

38 Rev. 1.1

FDD_6612_ 010 6612_OMU_S2_URT_V1_13 Firmware Description Document

Parameter g iven in r elay

value entered in )AE.

If the user desires 8 ms

MPU

Parameter

Location

(hex)

LSB Default Comment Example

Temp _raw_x is

obtained from the CE:

]71?<CR>

This value is then

enter ed here:

)A6=+value in deci mal

Also, th e command:

Temperature

Nominal

A6 – +0

Temp_raw_ x reading at 22 °C.
Needed to enable temperature

compensation.

>CLT<CR>

Will do the same as the

steps above.

Reserved A7 – Reserved

PPMC A8

PPMC2 A9

ppm/°

C

ppm/°

2

C

-668 ppm per °C.

-341

Cost/kWh AA mUnits +0.150

Units of Cost AB N/A USD

ADC temperature

compensation

ppm per °C

2

.

Cost per kWh (kilowatt hou r ) in

milliunits.

4-byte str i ng de sc r i bi n g uni t of

cost

(e.g. USD, EURO etc.).

There must be 4 characters. If

entering US dollars, USD,

ther e needs to be a space

Do not change the

default setting.

Do not change the

default setting.

If the cost per kWh is to

be 1 0 units:

)AD=+10.000<CR>

To enter US Dol lars:

)AB=”USD “<CR>

To enter Eu r os:

)AB=”EURO”<CR>

after the D to make it a four

character string.

Bit 1 ( Relay Pol ar ity)

0 = Normal Polarit y

Relay

Configuration

AC – 0

1 = In verted P ol ar ity

Bit 0 ( Relay Type)

0 = non-latched

1 = latched

If the user desires a 1

second delay between

the closing of the fir st

and second relays and

Sequence

Delay

AD 0.1s +0.1 Time dela y between r elays.

also a on e second delay

between the opening of

the fi r st and second

relays, then enter the

following:

>)AD=+1<CR>

Energize

Delay

Rev. 1.1 39

AE ms +0.000

manufactu r er ’s data sheet is
enter ed here. The amount of
delay will b e 1 ms plus the

of dela y then enter the
following:
>)AE=+0.007<CR>

6612_OMU_S2_URT_V1_13 Firmware Description Document FDD_6612_010

Parameter g iven in r elay

value entered in )AF.

If the user desires 8 ms

–

–

Target load current (rms) used

within 0.1V, the user can

within 0.1A, the user can

MPU

Parameter

Location

(hex)

LSB Default Comment Example

De-Energize

Delay

AF ms +0.000

manufactu r er ’s data sheet is
enter ed here. The amount of
delay will b e 1 ms plus the

of dela y then enter the
following:
>)AF=+0.007<CR>

Reserved B0 - BC ppb 0 Reserved Reserved

Bit 0 – Reserved.

Bit 1 – WPULSE Disable.

Additional

Status

BD – 1

Bit 2 – V Cal Failure.

Bit 3 – ICal1 Failure.

Bit 4 – WCal1 Failure.

Bit 5 – ICal2 Failure

Bit 6 – WCal2 Failure
Unused BE
Unused BF

Reserved C0 – 0 Reserved Reserved

If the targ et lin e voltage

Calibration

Voltage

C1 mVrms +120.000

Target line voltage (rms) used

for cal i bration.

for calibration is 220V,

enter the following:

>)C1=+220<CR>

If the targ et load current

Calibration

Current

Calibration

Phase

Toler ance on

Voltage

Toler ance on

Current

Average

Count for

Voltage

C2 mArms +1.000

C3 0.1° +0

C4 mVrms +0.010

C5 mArms +0.010

C6 1 +3

for cal i bration.

Target Ph ase (voltag e to

current). Normally set to zero.

Measur ed value to fal l with in

this set toler ance of the target

value ( Calibration Voltage

entr y) for th e calibr ation to be

complete.

Measur ed value to fal l with in

this set toler ance of the target

value (Calibration Current

entr y) for th e calibr ation to be

complete.

Number of volt age

measurem ents taken and

averaged to be compared to

the target value (Calibration

Voltage entry).

for calibration is 2A,

enter the following:

>)C2=+2<CR>

If the tolerance to the

targ et voltag e i s desi r ed

to be more coarse, to

enter the following:
>)C4=+0.100<CR>

If the tolerance to the

targ et cur r ent is desired

to be more coarse, to

enter the following:
>)C5=+0.100<CR>

If the amount of

averaging for the voltage

measurem ent is desired

to increase t o 10 enter

the following:

>)C6=+10<CR>

40 Rev. 1.1

FDD_6612_ 010 6612_OMU_S2_URT_V1_13 Firmware Description Document

value of power within the

value of power within the

MPU

Parameter

Average

Count for

Current

Max Iteration

for Volt age

Max Iteration

for Current

Toler ance on

Watts

Average

Count for

Watts

Max Iteration

for Watts

Calibration

WRATE

Calibration

Temperature

Rev. 1.1 41

Location

(hex)

LSB Default Comment Example

C7 1 +3

C8 1 +10

C9 1 +10

CA mW +0.010

CB 1 +3

CC 1 +10

CD 1 +4860

CE

0.1°C

+22.0

Number of current

measurem ents taken and

averaged to be compared to

the target value (Calibration

Current entry).

Number of attempts to reach

the target value (Calibration

Voltage entry) within the

programmed tolerance.

Number of attempts to reach

the target value (Cal i bration

Volt age entry) within the

programmed tolerance.

Measur ed value to fal l with in

this set toler ance of the target

value ( Calibration Voltage

multiplied by the calibration

curr ent entries ) for the

calibration to be complete.

Measur ed value to fal l with in

this set toler ance of the target

value ( Calibration Voltage

multiplied by the calibration

curr ent entries ) for the

calibration to b e complete.

Number of attempts to reach

the target value (Calibration

Voltage multiplied by the

calibration cur r ent entries )

wi thi n the pr ogra mmed

tolerance.

Entry for WRATE during the

calibration step only. After

calibration, WRATE returns to

the value entered in ]0F.

Target nominal temperature

for cal i bration.

If the amount of

averaging for the curren t

measurem ent is desired

to increase t o 10 enter

the following:

>)C7=+10<CR>

If maximum number of

iterations to be t r ied for

obtaining the target

value of volt age with i n

the set tol er ance (at C4)

is to be reduced to 5,

then enter:

>)C8=+5<CR>

If maximum number of

iterations to be t r ied for

obtaining the target

set toleranc e ( at C5) is

to be reduced to 5, then

enter:

>)C9=+5<CR>

If the tolerance to the

targ et power is desired

to be more coarse, to
within 0.1W, the user

can enter the following:

>)CA=+0.100<CR>

If the amount of

averaging for the power

measurem ent is desired

to increase t o 10 enter

the following:

>)CB=+10<CR>

If maximum number of

iterations to be t r ied for

obtaining the target

set toleranc e ( at CA) i s

to be reduced to 5, then

enter:

>)CC=+5<CR>

If the user desires the

targ et nominal

tem perature to be 25°C,

then set as follows:

>)CE=+25.0<CR>

6612_OMU_S2_URT_V1_13 Firmware Description Document FDD_6612_010

Threshold. A frequency below

frequency threshold is to

frequency threshold is to

If the peak narrowban d

Outlet 1 is to be changed

MPU

Parameter

Location

(hex)

LSB Default Comment Example

Unused CF – Unused

If the mini m um

temperature threshold is

to be chang e to 10°C

then set as follows:

>)D0=+10.0

If the maximum

temperature threshold is

to be chang e to 50°C

then set as follows:

>)D1=+50.0

If the minimum

be changed to 59.5 Hz

then enter the following:

>)D2=+59.5

If the maximum

be changed to 60.5 Hz

then enter the following:

>)D2=+60.5

Temp Alarm

Min

Threshold

Temp Alarm

Max

Threshold

Frequency

Minimum

Threshold

Frequency

Maximum

Threshold

SAG Voltage

Alarm

Threshold

D0 0.1°C +0.0°C

D1 0.1°C +70°C

D2 0.1Hz +59.0

D3 0.1Hz +61.0

D4 mVpk +80.0

Mini mum Temperature Alarm

Threshold. A temperature

below this threshold will set

the alarm (bit 0 of the Al ar m

Status Reg ister).

Maximum Tem perature Alarm

Threshold. A temperature
above this thresh ol d will set
the alarm (bit 1 of the Al ar m

Status Reg ister).

Mini mum Frequency Alarm

this thres hold will set t he alarm

(bit 2 of the Alarm Statu s

Register).

Maximum Fr equenc y Alarm

Threshold. A frequency above
this thres hold will set t he alarm

(bit 3 of the Alarm Statu s

Register).

Sets an alarm (bit 4 of the

Alarm Stat us Register) if

voltage drops below the S AG

threshold.

To chan ge the minim um

Min Voltage

Alarm

Threshold

D5 mVrms +100.000

Mini mum voltage level

selected to flag user (bit 5 of

the Alarm Status R egister).

voltage threshol d from

the 40 Volt default to 80

Volts:

)D5=+80.000<CR>

Peak

Voltage

Alarm

Threshold

D6 mVrms +140.000

Peak vo ltage setting that user

wishes to flag (bi t 6 of the

Alarm Stat us Register).

To chan ge the peak

voltage threshol d from

the default 407.3 Volts to

280 Volts :

)D6=+280.000<CR>

Unused D7 –

Peak IA_nb

Alarm

Threshold

42 Rev. 1.1

D8 mArms +15.000

Maximum Narrowband Current

measured on the IA chann el

above wh i ch a flag mu st set

(bit 7 of the Alarm Statu s

Register).

current threshold on

from t he default valu e of

15 Amps to 30 Amps

then set as follows:
)D8=+30.000<CR>

FDD_6612_ 010 6612_OMU_S2_URT_V1_13 Firmware Description Document

If the peak wideband

Outlet 1 is to be changed

1. A less negative narrowband

If the negative wideband

Maximum Narrowband Current

If the peak narrowban d

Outlet 2 is to be changed

MPU

Parameter

Location

(hex)

LSB Default Comment Example

Peak IA_wb

Alarm

Threshold

PFA_nb_Neg

Threshold

PFA_nb_Pos

Threshold

D9 mArms +15.000

DA – -0.700

DB – +0.700

Maximum Wideband Current

measured on the IA chann el

above wh i ch a flag mu st set

(bit 8 of the Alarm Statu s

Register).

Narrowband Power Fac tor

Negative Thres hold for Outlet

power factor than this

thr eshold will set an alarm (bit

9 of the Alarm Status

Register).

Narrowband Power Fac tor

Positive Threshold for O utlet 1.

A n ar r owb and power factor

less than this th reshold will set

an alarm (b i t 10 of t he Alarm

Status Reg ister).

current threshold on

from t he default valu e of

15 Amps to 30 Amps

then set as follows:
)D9=+30.000<CR>

If the neg ative

narrowband power fac tor

thr eshold on Outl et 1 is
to be chang ed from the

defaul t to -0.6 then set

as foll ows:

)DA=-0.600<CR>

If the posi tive

narrowband power fac tor

thr eshold on Outl et 1 is
to be chang ed from the

default to +0.600 then

set as follows:

)DB=+0.600<CR>

PFA_wb_Neg

Threshold

PFA_wb_Pos

Threshold

Peak IB_nb

Alarm

Threshold

DC – -0.700

DD – +0.700

DE mArms +15.000

Wideband Power Factor

Negative Thres hold for Outlet

1. A less negativ e wideba nd
power factor than this

thr eshold will set an alarm (bit

11 of the Alarm Stat us

Register).

Wideband Power Factor

Positive Threshold for O utlet 1.

A p ositive wideband power
factor less than this th r eshold
will s et an alarm (bit 12 of the

Alarm Stat us Register).

measured on the IB channel

above wh i ch a flag mu st set

(bit 13 of the Alarm Statu s

Register).

power factor thres hold

on Outlet 1 is to b e

changed from th e default

to -0.6 th en set as

follows:

)DC=-0.600<CR>

If the positive wideband

power factor thres hold

on Outlet 1 is to be

changed from th e default

to +0 .6 th en set as

follows:

)DD=+0.600<CR>

current threshold on

from t he default valu e of

15 Amps to 30 Amps

then set as follows:

)DE=+30.000<CR>

Rev. 1.1 43

6612_OMU_S2_URT_V1_13 Firmware Description Document FDD_6612_010

If the peak wideband

Outlet 2 is to be changed

2. A less negative narrowband
_Neg

If the negative wideband

Maximum Narrowband Current

MPU

Parameter

Location

(hex)

LSB Default Comment Example

Peak IB_wb

Alarm

Threshold

PFB_nb_Neg

Threshold

PFB_nb_Pos

Threshold

DF mArms +15.000

E0 – -0.700

E1

–

+0.700

Maximum Wideband Current

measured on the IB chann el

above wh i ch a flag mu st set

(bit 14 of the Alarm Statu s

Register).

Narrowband Power Fac tor

Negative Thres hold for Outlet

power factor than this

thr eshold will set an alarm (bit

15 of the Alarm Stat us

Register).

Narrowband Power Fac tor

Positive Threshold for O utlet 2.

A n ar r owb and power factor

less than this threshold will set

an alarm (b i t 16 of t he Alarm

Status Reg ister).

current threshold on

from t he default valu e of

15 Amps to 30 Amps

then set as follows:
)DF=+30.000<CR>

If the neg ative

narrowband power fac tor

thr eshold on Outl et 2 is
to be chang ed from the

defaul t to -0.6 then set

as foll ows:

)E0=-0.600<CR>

If the posi tive

narrowband power fac tor

thr eshold on Outl et 2 is
to be chang ed from the

default to +0.600 then

set as follows:

)E1=+0.600<CR>

PFB_wb

Threshold

PFB_wb_Pos

Threshold

Peak I

Total_nb

Alarm

Threshold

E2

–

-0.700

E3 – +0.700

E4 mArms +20.000

Wideband Power Factor

Negative Thres hold for Outlet

2. A less negativ e wideba nd
power factor than this

thr eshold will set an alarm (bit

17 of the Alarm Stat us

Register).

Wideband Power Factor

Positive Threshold for O utlet 2.

A p ositive wideband power
factor less than this th r eshold
will s et an alarm (bit 18 of the

Alarm Stat us Register).

meas ur e d on Out let 1 plus

Outlet 2 above which a flag

must be set (bit 19 of the

Alarm Stat us Register).

power factor thres hold

on Outlet 2 is to be

changed from th e default

to -0.6 then s et as

follows:

)E2=-0.600<CR>

If the positive wideband

power factor thres hold

on Outlet 2 is to be

changed from th e default

to +0 .6 th en set as

follows:

)E3=+0.600<CR>

If the narrowband peak

current threshold on

Outlet 1 plus Ou tle t 2 is

to be chang ed from the

defaul t value of 20 Amps

to 30 Amps th en set as

follows:

)E4=+30.000<CR>

44 Rev. 1.1

FDD_6612_ 010 6612_OMU_S2_URT_V1_13 Firmware Description Document

MPU

Parameter

Location

(hex)

LSB Default Comment Example

If the wideband peak

current threshold on

Peak I

Total_wb

Alarm

Threshold

E5 mArms +20.000

Maximum Wideband Current

meas ur e d on Out let 1 plus

Outlet 2 above which a flag

must be set (bit 20 of the

Alarm Stat us Register).

Outlet 1 plus Ou tle t 2 is

to be chang ed from the

defaul t value of 20 Amps

to 30 Amps th en set as

follows:

)E5=+30.000<CR>

If bi ts 0 and 1 ar e to be

masked then set as

follows:

>)E6=FFFFFFFC

Alarm

Mask_Reg

Alarm

Mask_DIO

E6

E7

–

00801FFF

–

00801FFF

Alarm mask for bits in th e

Alarm Stat us register. A “0”

masks the bit.

Bit 1 (Relay for Outlet 2)

0 = DIO19 = 0

1 = DIO19 =1

Control

Relay

F0 – 0

Bit 0 (Relay for Outlet 1)

0 = DIO7 = 0
1 = DIO7 = 1

Note: AC[1] = 1 invert s the bits

above.

Min/Max

Control

Clear

Control

F1 – 0

F2 – 0

BIT1 – 1 Start/S to p MIN/MAX
recording.

1 = Start
0 = Stop
BIT0 – 1 Reset MIN/MAX

registers. Bit autoclears .

Clear Contr ol Register:
Bit1 – Clears Cou nts
Bit 0 – Cl ear s Accumu lators.

Starts MIN/MAX

recording.

)AC=10<CR>

)AC=01<CR>

Resets the MIN/MAX

registers.

Rev. 1.1 45

6612_OMU_S2_URT_V1_13 Firmware Description Document FDD_6612_010

gain of 1.

If current on channel A is low by 1%

16384 by 1/(1+0.01). Number to be

gain of 1.

If current on channel B is low by 1%

16384 by 1/(1+0.01). Number to be

gain of 1.

If voltage on channel A is low by 1%

16384 by 1/(1+0.01). Number to be

gain of 1.

If voltage on channel B is low by 1%

6.2 CE Parameters

Table 9 l i sts the CE parameters that the Firmware 6612 _OMU_S2_URT_V1_13 has set. The user does
not need to alter any of these parameters.

Table 9: CE Parameters

CE

Location

Parameter

CAL IA 08

CAL IB 09

CAL VA 0A

(hex)

LSB Default Comment Example

16384 is

the

default

and i s a

32767 is

max

giving a

gain of 2.

16384 is

the

default

and i s a

32767 is

max

giving a

gain of 2.

16384 is

the

default

and i s a

32767 is

max

giving a

gain of 2.

+13873

+13873

+13024

Gain cons tant for

IA i nput.

Gain cons tant for

IB i nput.

Gain cons tant for

VA input.

scale the n omin al number, 16384 by

1/(1-0.01). Number to be ent er ed

woul d be 16 54 9:

]08=+16549<CR>

If current on channel A is high by

1% scale the nomin al number ,

entered would be 16222:

]08=+16222<CR>

scale the n omin al number, 16384 by

1/(1-0.01). Number to be ent er ed

woul d be 16 54 9:

]09=+16549<CR>

If current on channel A is high by

1% scale the nomin al number ,

enter ed would be 16222:

]09=+16222<CR>

scale the n omin al number, 16384 by

1/(1-0.01). Number to be ent er ed

woul d be 16 54 9:

]0A=+16549<CR>

If current on channel A is high by

1% scale the nomin al number ,

entered would be 16222:

]0A=+16222<CR>

CAL VB 0B

PHASE_

ADJ_IA

0C

46 Rev. 1.1

16384 is

the

default

and i s a

32767 is

max

giving a

gain of 2.

-16384 ≤
PHASE_
ADJ_IA ≤
+16384

+13024

0

Gain cons tant for

VB input.

Outlet 1 Phase

adjustment =15 *

PHASE_ADJ_IA

-14

(degrees)

* 2

scale the n omin al number, 16384 by

1/(1-0.01). Number to be ent er ed

woul d be 16 54 9:

]0B=+16549<CR>

If current on channel A is high by

1% scale the nomin al number ,

1638 4 by 1/(1+ 0.01). Number to be

entered would be 16222:

]0B=+16222<CR>

No adjustm ent should be necessary

when using current shunts.

FDD_6612_ 010 6612_OMU_S2_URT_V1_13 Firmware Description Document

CE

Parameter

PHASE_

ADJ_IB

Location

(hex)

0D

LSB Default Comment Example

-16384 ≤
PHASE_
ADJ_IB ≤
+16384

0

Outlet 2 Phase

adjustment =15 *

PHASE_ADJ_IB

-14

* 2

(degrees)

SAG CNT

No adjustm ent should be necessary

when using current shunts.

]0E=5005

Bits 15: 8 –

deter min es the

consecutive

voltage samples

Selects at l east 80 (50h)
consecutive voltag e samples below
SAG_Threshold before SAG alarm.

below

SAG_Threshold

Select Outlet 1 as pulse source.

befor e a sag

alarm is dec l ar ed.

255 is the

maximum value.

Selects Current Shunts as th e

sensor for both Outlet 1 and Outlet

Pu l se Selection

(PULSEL)

Bit 4

Selects Pulse Gain Fact or equal to

6/64

2

0 – chooses

Outlet 1 (IA input)

for pu l se

CESTATE 0E 5005h

generation

1 – chooses

Outlet 2 (IB input)

for pu l se

generation.

Current sensor

selection

Bits 3 and 2

00 – selects CT

11 – selects

shunt.

Pu l se gain factor

Bit s 1 and 0

00 – 6x

01 – (6/64)x

10 – 96x

11 – 1.5x

WRATE 0F

Kh =

VMAX A *

IMAX A /
(WRATE

* X)

1.6826E+
01

WattSec

+4860

Controls the

number of pu l ses

that are
gen er ated per
measured Wh

and VARh

measurements.

Kh = 0.32 * Wh / pulse w i th X =

]0F=+4860

6/64,

VMAX =600 V

and

IMAX = 52 A

Reserved 10 Reserved

Rev. 1.1 47

6612_OMU_S2_URT_V1_13 Firmware Description Document FDD_6612_010

CE

Parameter

SAG

Threshold

Location

(hex)

11

LSB Default Comment Example

VMAX A

*4.2551E-

07 (Vpk)

+313350

The voltage

thr eshold for

SAG warnings.

The default value

is 80 Vpk if

)11=+313350

80 Vpk SAG Threshold.

VMAX = 600 V.

QUANTA 12

VMAX A

* IM AX A

*

1.8541E­10

(Watt)

0

Compensation

add ed to th e Watt

calculation for

Outlet 1. Used

for compens ation

at low current

levels. Keep

below 10000d.

QUANTB 13

VMAX A

* IM AX B

*

1.8541E­10

(Watt)

0

Compensation

add ed to th e Watt

calculation for

Outlet 2. Used for

compens ation at

low current

levels. Keep

below 10000d.

QUANT

VAR A

14

VMAX A

* IM AX A

*

1.8541E-

10 (Watt)

0

Compensation

add ed to th e VAR

calculation for

Outlet 1. Used for

compens ation at

low current

levels. Keep

below 10000d.

QUANT

VAR B

15

VMAX A

* IM AX B

*

1.8541E-

10 (Watt)

0

Compensation

add ed to th e VAR

calculation for

Outlet 2. Used for

compens ation at

low current

levels. Keep

below 10000d.

IA i nput

compensation

added for input

nois e and

truncation in the

squaring

calculation for I

Used for

2

.

QUANT IA 16

(IMAX A)2 *

4.6351E-11
(A2)

0

compens ation at

low current

levels. Keep

below 10000d.

48 Rev. 1.1

FDD_6612_ 010 6612_OMU_S2_URT_V1_13 Firmware Description Document

CE

Parameter

Location

(hex)

LSB Default Comment Example

IA i nput

compensation

added for input

nois e and

truncation in the

squaring

calculation for I

Used for

2

.

QUANT IB 17

(IMAX B)2 *

4.6351E-11

(A2)

0

compens ation at

low current

levels. Keep

below 10000d.

Reserved 18 – – Reserved

Reserved

To increase all channels equ ally by

1% scale th e nominal number,

1638 4 by 1/(1-0.01). Number to be

entered would be 16549:

]19=+16549<CR>

To decrease all channels 1% scale

the no minal nu mbe r , 16 38 4 by

1/( 1+0.01). Number to be entered

Gain

Adjust

19

16384 is

the

default

and i s a

gain of 1.

+16384

32767 is max

giving a

gain of 2.

woul d be 16 22 2:

]19=+16222<CR>

Reserved 1A – – Reserved Reserved
Reserved 1B – – Reserved Reserved

Rev. 1.1 49

6612_OMU_S2_URT_V1_13 Firmware Description Document FDD_6612_010

7 Address Content Summary

If the color shading is the same, the informat i on in the tab le cells i s the same between narrowband and
wideband measur ements. Note that Outlet 1 = channel A and Outlet 2 = channel B.

Table 10: MPU Output Summary Chart

Outlet 1 Address Narrowband Address Wideband

Common Data 00 Delta Temp 20 Delta Temp

01 Line Frequency 21 Line Frequency
02 Alarm Status 22 Alarm St atus
03 Over Current Event Count 23 Over Current Event Count
04 Under Voltage Event C ou nt 24 U nd er Voltage Eve nt Cou nt
05 Over Voltage Event Count 25 Over Voltage Event Count
06 Volts 26 Volts

Common, Outlet 1
Specific Data

Tier 1, Outlet 1 Specific
Data

Tier 2, Outlet 1 Specific
Max/Min Data

07 Watts (A) 27 Watts (A)
08 Energy (A) 28 Energy (A)
09 Cost (A) 29 Cost (A)
0A Current (A) 2A Current (A)

0B VAR (A) 2B VAR (A)
0C VA (A) 2C VA (A)
0D Power Factor (A) 2D Power Factor (A)

0E Phase (A) 2E Phase (A)

0F ( R eserved for F u ture) 2F (Reserv ed for F u t ure)

10 Vrms Min 30 Vrms Min

11 Vrms Max 31 Vrms Max

12 Watts Min (A) 32 Watts Min (A)

13 Watts Max (A) 33 Watts Max (A)

14 Current Min (A) 34 Current Min (A)

15 Current Max (A) 35 Current Max (A)

16 VAR Min (A) 36 VAR Min (A)

17 VAR Max (A) 37 VAR Max (A)

18 VA Min (A) 38 VA Min (A)

19 VA Max (A) 39 VA Max (A)

1A Power Factor Min (A) 3A Power Factor Min (A)

1B Power Factor Max (A) 3B Power Factor Max (A)
1C Phase Min (A) 3C Phase Min (A)
1D Phas e M a x( A) 3D Ph ase Max(A)

1E (Reserved for F u t ure) 3E (Res er v ed f or Futur e)

1F ( R eserved for F u ture) 3F (Reserv ed for F u t ure)

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FDD_6612_ 010 6612_OMU_S2_URT_V1_13 Firmware Description Document

Outlet 2 Narrowband Wideband

Common Data 40 Delta Temp 60 Delta Temp

41 Frequency 61 Frequency

42 Alarm Status 62 Alarm Status

43 Over Current Event Count 63 Over Current Event Count

44 Vo ltage SAG Event Count 64 Voltage SAG Event Count

45 Over Voltage Event Count 65 Over Voltage Event Count

46 Volts 66 Volts

Common, Outlet 2
Specific Data

Tier 1, Outlet 2 Specific
Data

Tier 2, Outlet 2 Specific
Max/Min Data

47 Watts (B) 67 Watts (B)

48 Energy (B) 68 Energy (B)

49 Cost (B) 69 Cost (B)

4A Current (B) 6A Current (B)

4B VAR (B) 6B VAR (B)
4C VA (B) 6C VA (B)
4D Power Factor (B) 6D Power Factor (B)

4E Phase (B) 6E Phase (B)

4F ( R eserved for F u ture) 6F (Reserv ed for F u t ure)

50 Vrms Min 70 Vrms Min

51 Vrms Max 71 Vrms Max

52 Watts Min (B) 72 Watts Min (B)

53 Watts Max (B) 73 Watts Max (B)

54 Current Min (B) 74 Current Min (B)

55 Current Max (B) 75 Current Max (B)

56 VAR Min (B) 76 VAR Min (B)

57 VAR Max (B) 77 VAR Max (B)

58 VA Min (B) 78 VA Min (B)

59 VA Max (B) 79 VA Max (B)

5A Power Factor Min (B) 7A Power Factor Min (B)

5B Power Factor Max (B) 7B Power Factor Max (B)
5C Phas e Min (B) 7C Phase Min (B)
5D Phase Max (B) 7D Phase Max (B)

5E (Reserved for F u t ure) 7E (Res er v ed f or Futur e)

5F ( R eserved for F u ture) 7F (Reserv ed for F u t ure)

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6612_OMU_S2_URT_V1_13 Firmware Description Document FDD_6612_010

Totals of Multiple

Outlets

Common Total Data 80 Total Watts 90 Total Watts

Ban dw i dth Speci fic
Totals

Common Total Max/Min
Data

Ban dw i dth Speci fic
Total Max/Min Data

Narrowband Wideband

81 Total Energy 91 Total En er gy

82 Total Cost 92 Total Cost

83 Total Current 93 Total Current

84 Total VAR s 94 Total VAR s

85 Total VA' s 95 Total VA' s

86 Total Ov er C ur r e nt Cou nt 96 Total O ver C ur r e nt Cou nt

87 (R eserv ed for F u t ure) 97 (R eserv ed f or Futur e)

88 Total Watts Min 98 Total Watts Min

89 Total Watts Max 99 Total Watts Max

8A

8B Total Current Max 9B Total Current Max
8C Total VAR Min 9C T otal VAR Min
8D Total VAR Ma x 9D Total VA R Max

8E Total VA Min 9E Total VA Min

8F Total VA Max 9F Total VA Max

Total Current Min 9A Total Current Min

52 Rev. 1.1

FDD_6612_ 010 6612_OMU_S2_URT_V1_13 Firmware Description Document

Table 11: MPU Input Summary Chart

Voltage A0 Vmax

Current - Outlet 1 A1 Imin (Creep A) - Outlet1

A2 Imax (A) - Outlet1

Current - Outlet 2 A3 Imin (Creep B) - Outlet2

A4 Imax (B) - Outlet2

Unused A5 Unused

Temperature A6 TEMPERATURE NOMINAL

A7 Reserved
A8 PPMC
A9 PPMC2

Cost AA Cost per KWh

AB Cost Unit string

Relay Configuration AC Pola rity, Latc h type

AD Sequence Delay
AE Energ i z e D elay
AF Denergi ze Delay

B0 -BC Unused

Misc. Config BD Configuration

Unused BE Unused

BF Unused

Quick Calibration Parameters C0 Calibration Type

C1 Calibration Voltage (Target)
C2 Calibration Current (Target)
C3 Calibrati o n Phas e
C4 Tolerance on Voltage Calibration
C5 Tolerance on Current Calibration
C6 Aver ag e Co unt for Volt age
C7 Aver ag e Co unt for C ur r ent
C8 Max It er at ions for Voltage
C9 Max Iterations for Current
CA Tolerance on Watts Calibration

CB Average Count for Watts
CC Max Iterations for Watts
CD Calibration WRATE

CE Cali brati o n T em per at ur e

CF Unused

Temperature D0 Min T em p er a t ure Alar m T hres hol d

D1 Max Temperature Alarm Threshold

Frequency D2 Min Frequency Alarm Threshold

D3 Max Fr eq uency Alarm Thres hol d

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6612_OMU_S2_URT_V1_13 Firmware Description Document FDD_6612_010

Voltage D4 SAG Voltage Alarm Threshold

D5 Min Voltage Alarm Threshold

D6 Max Voltage Alar m T hr e s h ol d

Unused D7 Unused

Current - Outlet 1 D8 Max Curren t Alarm Threshold (NB)

D9 Max Curren t Alarm Threshold (WB)

Power Factor - Outlet 1 DA Power Factor Alarm - Threshold (NB)

DB Power Factor Alarm + Threshold (NB)
DC Power Factor Alarm - Threshold (WB)
DD Power Factor Alarm + Threshold (WB)

Current - Outlet 2 DE Max Current Alarm Threshold (NB)

DF Max Current Alarm Threshold (WB)

Power Factor - Outlet 2 E0 Power Factor Alarm - Threshold (NB)

E1 Power Factor Alarm + Threshold (NB)
E2 Power Factor Alarm - Threshold (WB)
E3 Power Factor Alarm + Thresho l d (WB)

Total Current

E4 Max Current Alarm Threshold (NB )
E5 Max Current Alarm Threshold (WB)

Alarm Mask for Status Regs E6 Alarm Mask for Status

Alarm Mask for Alarm DI/O E7 Alarm Mask for Alarm DI/O

Relay Controls F0 Relay On/Off Control

Min/Max Controls F1 Min/Max Controls

Clear Control F2 Accumulator and Counter Clear

Table 12: CE Input Summary Chart

Calibration 08 Calibration Gain IA

09 Calibration Gain IB
0A Calibration Gain VA
0B Calibration Gain VB

Phase Compensation 0C Ph ase Adj us t I A

0D Ph ase Adj us t IB

CE Configuration 0E CE State

Pulse Rate 0F Wrate

10 Reserved

SAG Threshold 11 SAG Threshold

Quantization Corrections 12 Qua nt i zatio n offs et W atts A

13 Quantizatio n offs et Watts B

14 Quantizatio n offs et V AR A

15 Quantizatio n offs et V AR B

16 Qua ntization of fs et IA

17 Qua ntization of fs et IB

18 Reserved

Gain Adjust 19 Tem p erat ure Gai n Adjus t

54 Rev. 1.1

FDD_6612_ 010 6612_OMU_S2_URT_V1_13 Firmware Description Document

8 Contact Information

For m or e i nformation about Teridian Semiconductor products or to chec k the availa bility of the 78M6612,
contact us at: http://www.teridian.com/contact-us/

644 0 Oak Canyon Road
Suite 100
Irvin e, CA 92618-5201

Telephone: [phone]

FAX: [phone]

Rev. 1.1 55

6612_OMU_S2_URT_V1_13 Firmware Description Document FDD_6612_010

Revision Hi story

Revision Date Description

1.0 7/29/2009 First p ublication.

1.1 12/21/2009 In Section 1, deleted “ The OMU demo units are typically p r e-loaded with the
“H” version, b ut bot h versions are provided in the demo ki t’s CD s.”

In Table 1, corrected the Narr owband Equation and the Wideband Equation
for S ymbol P.

In Secti on 4.3.1, added “

preceded by a + or a -. The exception is )AB? which returns a string (see page 39).”
In Section 4.8, deleted all references to “SFR”.
Throughout the document, inserted “+” in front of decimal numbers.

When requesting information in decimal, the data is

56 Rev. 1.1