ICP DAS USA | PM-3133-100-CPS | User manual | ICP DAS USA PM-3133-100-CPS User Manual

ICP DAS USA PM-3133-100-CPS User Manual
PM-3133 User‟s Manual v1.07
Copyright © ICP DAS Co., Ltd.
Last Revised: Sep. 2015
All Rights Reserved.
www.icpdas.com
Page: 1
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Chapter 1 Introduction .................................... 4
3.2.3
CT‟s installation steps ..... 13
1.1.
PM-3133 introduction ........ 4
1.2.
Caution ............................. 5
4.1
Connection ...................... 14
1.2.1.
Danger .............................. 5
4.2
Wiring .............................. 16
1.3.
Warning ............................ 5
1.4.
Product Warranty &
5.1
Relay ............................... 18
Customer Support ............. 5
5.2
LED Indicator .................. 18
1.4.1.
Limitation of Warranty ....... 6
Chapter 2 Specifications ................................. 7
Chapter 4 Wiring Diagrams ........................... 14
Chapter 5 Relay output & LED Indicator ........ 18
Chapter 6 Modbus-RTU communication........ 19
6.1.1
SW1-SW6 setting.......... 19
2.1
Specifications.................... 7
6.2
Modbus-RTU setting ....... 22
2.2
Naming Rules ................... 9
6.2.1
Specifications .................. 22
Chapter 3 Installation .................................... 10
6.2.2
Modbus Register ............. 24
3.1
Inspection ....................... 10
3.2
Safety ............................. 10
7.1
Default settings ............... 30
3.2.1
Dimension and Latch ...... 10
7.1.1
Ethernet configurations.... 31
3.2.2
Mounting and Dismounting
7.2
Specifications .................. 33
7.2.1
Modbus Register ............. 33
....................................... 12
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Copyright © ICP DAS Co., Ltd.
Chapter 7 Modbus-TCP Communication ....... 30
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7.3
Connecting the Power and
8.2.3
NMT Introduction ............. 51
Host PC (without PoE) .... 34
8.2.3.1
Module Control Protocol .. 51
Chapter 8 CANopen communication ............. 35
8.2.3.2
Error Control Protocol ...... 54
8.2.4
Special Functions for
8.1
CANopen setting ............. 35
8.2
CANopen Protocol .......... 37
8.2.1
SDO Introduction ............ 38
8.2.4.1
Power Meter Data Table.. 55
8.2.1.1
Upload SDO Protocol...... 38
8.3
Object Dictionary of
8.2.1.2
Download SDO Protocol . 40
8.2.1.3
Abort SDO Transfer Protocol
PM-3133-CPS ................. 55
PM-3133-CPS ................. 56
8.3.1
........................................ 56
....................................... 44
8.2.2
PDO Introduction ............ 47
8.2.2.1
PDO COB-ID Parameters 47
8.2.2.2
Transmission Type.......... 48
8.2.2.3
PDO Communication Rule
Communication Profile Area
8.3.2
Manufacturer Specific
Profile Area ..................... 62
8.3.3
Application Object ........... 66
Appendix 1: Questions & Answers ................ 67
....................................... 49
PM-3133 User‟s Manual v1.07
Copyright © ICP DAS Co., Ltd.
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Chapter 1 Introduction
1.1.
PM-3133 introduction
ICP DAS offers PM-3133 family in a full range of Single-phase and Three-phase smart
power meters for power monitoring. The products offer a rich feature set combined with
easy-to-integrate communications.
With its high accuracy (<0.5%, PF=1), the PM-3133 series products can be applied both
on low voltage primary side and/or medium/high voltage secondary side and enable the
users to obtain in real time the reliable and accurate energy consumption readings from
the monitored equipments while in operation. These compact size and cost effective
Power Meters are equipped with revolutionary wired clip-on CT (various types support
input current up to 400A) and standard Modbus communication RS-485 protocol for
easy deployment. It works with input voltages ranging 10V ~ 500V, supporting a wide
range of applications.
Features:





True RMS Power Measurements
Energy Analysis for 3P4W-3CT, 3P3W-2CT, 3P3W-3CT, 1P2W-1CT, 1P3W-2CT
Current Measurements Up to 400 A with Different CT Ratio
Voltage Measurements Up to 500 V
Clip-on CT for Easy Installation





W Accuracy Better than 0.5% (PF=1)
Supports RS-485, Ethernet Interface (PoE)
Supports Modbus RTU, Modbus TCP protocols.
Supports 2-Power Relay Output (Form A)
Total Harmonic Distortion (THD)
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1.2.
Caution
1.2.1. Danger
The meter contains hazardous voltages, and should never be disassembled. Failing to
follow this practice will result in serious injury or death. Any work on or near energized
meters, meter sockets, or other metering equipment could induce a danger of electrical
shock. It is strongly recommended that all work should be performed only by qualified
industrial electricians and metering specialist. ICP DAS assumes no responsibility if
your electrical installer does not follow the appropriate national and local electrical
codes.
1.3.
Warning
ICP DAS assumes no liability for any damage resulting from the use of this product. ICP
DAS reserves the right to change this manual at any time without notice. The
information furnished by ICP DAS is believed to be accurate and reliable. However, no
responsibility is assumed by ICP DAS for its use, not for any infringements of patents or
other rights of third parties resulting from its use.
1.4.
Product Warranty & Customer Support
ICP DAS warrants all products free from defects in material and workmanship for a
period of one year from the date of shipping. During the warranty period, we will, at our
position, either repair or replace any product that proves to be defective. To report any
defect, please contact :+886-3- 597-3366 or service@icpdas.com.
Please have the model, serial number and a detailed problem description available
when you call. If the problem concerns a particular reading, please have all meter
readings available. When returning any merchandise to ICP DAS, a return SN. is
required.
PM-3133 User‟s Manual v1.07
Copyright © ICP DAS Co., Ltd.
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1.4.1. Limitation of Warranty
This warranty does not apply to defects resulting from unauthorized modification,
misuse, or use for reason other than electrical power monitoring. The supplied meter is
not a user-serviceable product.
PM-3133 User‟s Manual v1.07
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Chapter 2 Specifications
2.1 Specifications
Model
PM-3133
PM-3133-MTCP
AC Power Measurement
Wiring
1P2W-1CT, 1P3W-2CT, 3P3W-2CT, 3P3W-3CT and 3P4W-3CT
Measurement Voltage
10 ~ 500 V (CAT III)
Measurement Current
CT Φ10 mm (60 A); CTΦ16 mm (100 A); CTΦ24 mm (200 A);
CTΦ36m (300 A); CTΦ36m (400 A)
Measurement Frequency 50-60 Hz
W Accuracy
Better than 0.5% (PF:1)
Starting Current
>0.03A ( 60A ), >0.05A (100A ), >0.09A( 200A )
True RMS voltage (Vrms), True RMS current (Irms), Active Power (kW),
Power Parameter
Active Energy (kWh), Apparent Power (kVA), Apparent Energy (kVAh),
Measurement
Reactive Power (kVAR), Reactive Energy (kVARh), Power Factor (PF),
Frequency(Hz)
Data Update Rate
1 Second
Communication
Protocol
Modbus-RTU
-
Baud rate
9600,19200 (default), 38400,
115200; DIP Switch Selectable
-
RS-485
Data
N,8,1 (default); N,8,2; E,8,1; E,8,2;
format
O,8,1; O,8,2 ( FW version 1.07)
Isolation
3000 VDC
Bias
Resistor
-
No (Usually supplied by the
RS-485 Master. Alternatively, add
a tM-SG4 or SG-785)
Protocol
-
Modbus TCP
PoE
-
Yes, IEEE 802.3af
Ethernet
Alarm Output
Power Relay
PM-3133 User‟s Manual v1.07
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Form A (Normal Open) x 2; Relay Contact Voltage Range: 5 A @ 250
VAC (47 ~ 63Hz), 5 A @ 30 VDC
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Aux Power
+12 ~ 48 VDC or PoE
Input Range
+12 ~ 48 VDC
PoE Pin Assignments:
+ (Pin 1, 2), V- (Pin 3, 6)
Power Consumption
2W
Dimensions (W x L x H) 127 mm x 105 mm x 33 mm
Environment
Operating Temperature -20 ~ +70 °C
Storage Temperature
-40 ~ +80 °C
Field Wiring Terminal Markings:
3.81mm (For Measurement Current and Communication): Use Copper Conductors Only,
wires range 16-26 AWG, torque value 3.0 lb-in.
5.08mm (For Measurement Voltage, Aux Power and Alarm Output):
Use Copper Conductors Only, wires range 12-24 AWG, torque value 7.0 lb-in.
7.62mm: Use Copper Conductors Only, wires range 12-24 AWG, torque value 4.5 lb-in.
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2.2 Naming Rules
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Chapter 3 Installation
3.1 Inspection
The instrument is no longer safe when,
a) Shows clear signs of damage
b) Does not work
c) Long storage under extreme conditions
d) Damage during shipment
3.2 Safety
Please use the soft dry clothes to clean the instrument.
Please do not use any chemical or detergent or volatile solvents to clean the instrument,
in order to avoid any possibility of the cover damage.
3.2.1 Dimension and Latch
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


Products come with external split type clip-on CT‟s. Disconnect the CT‟s or use
other CT‟s is highly prohibited.
Please read this operation manual carefully before using.
Please re-confirm the measure position.
PM-3133 series can be installed as rail mounting mode or embedded, no need to

drill a hole or screw to fix it (rail mounting width can up to the length of 35 mm).
Meter auxiliary power is DC +12V ~+48V.

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3.2.2 Mounting and Dismounting

Mounting
Assembly: Place the PM-3133 on the DIN-Rail. Push the front of the PM-3133
toward the mounting surface until it audibly snaps into place.
Dismantling: Pull out the latch and then remove the PM-3133 from the DIN-rail.

Wire Disconnection
1. Open the CT clip to detach the CT, do not remove the CT terminal lines if
possible
Note: if you need to remove the terminal lines, always detach the CT before
removing the CT terminal lines. Otherwise the CT may develop open-circuit
secondary voltages which may be hazardous to personnel or damaging to the
CT or equipment connected in the secondary circuit.
2. Disconnect the voltage input wires from terminals and wrap the wire tips with
plastic tape.
3. Disconnect the communication wires from terminal.
4. Disconnect the auxiliary power from terminal and wrap the wire tip with plastic
tape.
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3.2.3 CT’s installation steps


At the bottom of the CT, there is a
“K→L” mark.
Make sure the power current
direction follow the “K→L” mark on

Open the CT clip.

Installation steps finished.
the CT and then close the CT clip.
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Chapter 4 Wiring Diagrams
4.1 Connection
Please firstly check the current input terminal, and then in white black, white black,
white black wire sequences (CT1-K, CT1-L, CT2-K, CT2-L,CT3-K,CT3-L). Then
connect the CT‟s, and close the CT clip. Make sure the arrow direction sign on CT‟s
follows current flow direction(K→L)
Note: it must be in the same direction.
Connect the voltage input terminal N C B A. for PM-3133, in the three phase order
as follows on N C B A.
Attention please!! For 3P3W-2CT, connect in N C A phase sequence, do not
connect phase B (Check the diagram).
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Voltage Input
1.
PM-3133 series: Input Voltage up to 500V.
For any higher Input Voltage large than 500V, please add the PT (power transformer), and Change PT
RATIO setup.
2.
Confirm the RST (ABC) phase sequence.
Current Input
1.
The external CT‟s are fragile, please handle with care.
2.
The current input of PM-3133 series is in mA range. Only the ex-factory attached CT‟s can be used.
The other CT‟s, for example, from panel will damage the instrument due to its large current (around
5A)
3.
When more than one smart meter (PM-3133 series) are installed, please do not disconnect the CT
with its original meter and mix use with each other. Since each set of smart meter (PM-3133 series)
and its attached split type clip-on CT are calibrated set by set. The mix use may cause wrong
measurements.
4.
To install CT‟s correctly, please ensure the CT lines sequences is right before clip the CT‟s onto the
power cable of the monitoring equipment. (Detail will be found in next section)
5.
When measuring the current, the secondary circuit of a CT should never be
opened when a load is passing through its primary. Make sure you always open
the CT clip to detach the CT before removing the terminal lines. Otherwise, it will cause severe
injury.
6.
Please handle with extra care, especially when the operation space of CT‟s is limited.
7.
The current direction must follow K-L marked on CT‟s.
8.
Please select the right size CT‟s for different size of monitoring equipment cables:
power cable diameter <Φ10 use
60A CT,Φ10~Φ16 use 100A CT,Φ16~Φ24 use 200A CT,
,Φ36 use 300A CT,Φ36 use 400A CT
9.
The maximum current value cannot exceed the CT rating
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4.2 Wiring

1P2W-1CT(PM-3133)

1P3W-2CT(PM-3133)

3P3W-2CT(PM-3133)
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
3P3W-3CT(PM-3133)

3P4W-3CT(PM-3133)
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Chapter 5 Relay output & LED Indicator
5.1 Relay
Relay type
Power Relay, Form A (SPST N.O.)
Operating Voltage Range
250 VAC/30 VDC
Max. Load Current
5 A at 25 °C
Operate Time
6 ms
Release Time
3 ms
5.2 LED Indicator
The PM-3133 has 4 LED to indicate the unit power status, RS-485 communication, and
power data calculation.

RUN: Green, light up after RS-485 ready. LED will flash when the unit is processing
RS-485 communication.



PWR: Red, Power on LED always on.
DO0: Green. LED DO0 will light up, when DO0 is “ON”.
DO1: Green. LED DO1 will light up, when DO1 is “ON”.
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Chapter 6 Modbus-RTU communication
6.1 RS-485 setting

Default setting for RS-485: 19200, n, 8, 1

DIP switch (SW1-SW6) is used for Modbus address setting, default is 1, i.e.
all OFF
For example: Modbus address is 10,find the table of DIP switch 1-6 is
ON, OFF, OFF, ON, OFF, OFF
6.1.1 SW1-SW6 setting
Setting Modbus-RTU address for communication (1-64)
Modbus Address
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
PM-3133 User‟s Manual v1.07
Copyright © ICP DAS Co., Ltd.
SW 1
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
SW 2
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
SW 3
OFF
OFF
OFF
OFF
ON
ON
ON
ON
OFF
OFF
OFF
OFF
ON
ON
ON
ON
OFF
OFF
OFF
OFF
ON
ON
ON
ON
OFF
SW 4
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
ON
ON
ON
ON
ON
ON
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
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SW 5
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
ON
ON
ON
ON
ON
ON
ON
ON
SW 6
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
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26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
PM-3133 User‟s Manual v1.07
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ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
OFF
ON
ON
ON
ON
OFF
OFF
OFF
OFF
ON
ON
ON
ON
OFF
OFF
OFF
OFF
ON
ON
ON
ON
OFF
OFF
OFF
OFF
ON
ON
ON
ON
OFF
OFF
OFF
OFF
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
ON
ON
ON
ON
ON
ON
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
ON
ON
ON
ON
ON
ON
ON
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ON
ON
ON
ON
ON
ON
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
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 SW7-SW8 setting
PM-3133:For Baud Rate Setting
Baud Rate
SW 7
9600 bps
OFF
19200 bps (Default)
ON
38400 bps
OFF
115200 bps
ON
SW8
OFF
OFF
ON
ON
Add the Bias Resistor on RS-485 Network for stable signal
The RS-485 master is required to provide the bias for PM-3133 series. Otherwise, the tM-SG4
or SG-785 should be added to provide the bias. All ICP DAS controllers and converters provide
the bias.
 SW9-SW10 setting
PM-3133:Select the different wiring mode
(Please select the Software setting, if 1P2W-1CT or 1P3W-2CT is used)
Wiring
Software setting
3P3W-2CT
3P3W-3CT
3P4W-3CT
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SW 9
SW 10
OFF
ON
OFF
ON
OFF
OFF
ON
ON
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6.2 Modbus-RTU setting
6.2.1 Specifications
Protocol
Modbus-RTU
Transmission
Specifications
Bits per Byte:
1 start bit
8 data bits, least significant bit sent first
None Parity
1 stop bits
Error Check:
Cyclical Redundancy Check (CRC)
Baud Rate
9600, 19200 (Default), 38400, 115200
Modbus slave address
1-64 (Default = 1)
 Modbus Function Code:01h, 03h, 04h, 05h, 06h, 0Fh, 10h
Code MODBUS_ name
Description
01h
Read Coils
Read boolean values of read/write location
05h
Write Single Coil
Set one boolean value of read/write location
0Fh
Write Multiple Coil
Set boolean values of read/write location
03h
Read Holding Registers
Read the contents of read/write location
06h
Write Single Register
Set the content of one read/write location
10h
Write Multiple Registers
Set the contents of read/write location
04h
Read Input Registers
Read the contents of read only location
Note: the max. data reading of Function 03 and Function04 is 125 registers

Data format
Integer:16 bits with sign, each with 1 register
Unsigned Integer:16 bits without sign, each with 1 register
Float:IEEE 754 Format ,each with 2 registers,
Low Word is first priority while transmit
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IEEE 754 Format
Definition of the floating format of the Bits
Data Hi Word,
Data Hi Word,
Data Lo Word,
Data Lo Word,
Hi Byte
Lo Byte
Hi Byte
Lo Byte
SEEE EEEE
EMMM MMMM
MMMM MMMM
MMMM MMMM
Value = (- 1)S x (1.M) x 2E -127
0 < E < 255
S represents the sign bit where 1 is negative and 0 is positive
E is the two‟s complement exponent with an offset of 127.
i.e. an exponent of zero is represented by 127, an exponent of 1 by 128 etc.
M is the 23-bit normal mantissa. The highest bit is always 1 and,
therefore, is not stored.
Transfer sequence (Float)
1
2
3
4
Data Low Word, Data Low Word, Data High Word, Data High Word,
High Byte
Low Byte
High Byte
Low Byte
Transfer sequence (Inverse Integer)
1
2
3
4
Data High Word, Data High Word, Data Low Word, Data Low Word,
High Byte
Low Byte
High Byte
Low Byte
Transfer sequence (Integer)
1
2
3
4
Data Low Word, Data Low Word, Data High Word, Data High Word,
High Byte
Low Byte
High Byte
Low Byte
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6.2.2 Modbus Register
 Modbus Module #1 – Coil: Relay Value
Modbus Register
Parameter name
Modicom
Format
Data
Type
Len
Hex
Default
value
Range
DO 0
04097
0x1000
Word
Byte
0 = OFF
1 = ON
0
DO 1
04098
0x1001
Word
Byte
0 = OFF
1 = ON
0
04113
0x1010
Word
Byte
04114
0x1011
Word
Byte
DO 0
Power On Value
DO 1
Power On Value
0 = OFF
Comment
0
1 = ON
0 = OFF
0
1 = ON
 Modbus Module #2 – Holding Register : System Parameter Setting
Modbus Register
Parameter name
Modicom
Format
Len
Hex
Data
Type
Range
Default
value
PT_Ratio
44100
0x1003
Word
UInt
1-65535
100
CT_Ratio
44101
0x1004
Word
UInt
1-65535
1
Wiring Mode
44107
0x100A
Word
UInt
Units
Comment
0.01
1: 1P2W
Only work
2: 1P3W
when
3: 3P3W2CT
5
SW9-SW10 is
4: 3P3W3CT
all off
5: 3P4W3CT
Set Energy to Zero
Reset to Factory
Settings
44108
0x100B
Word
UInt
0x0055
44109
0x100C
Word
UInt
0x0055
0x0055: Auto
Default Frequency
44110
0x100D
Word
UInt
0x0064: 50Hz
Absolute
Accumulated Mode
44113
PM-3133 User‟s Manual v1.07
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0x1010
Word
UInt
0: Enable
1: Disable
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Only Write
Re-power the
0x0055
0x0078: 60Hz
Energy
Only Write
module after
setting
0
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0: Disable
Harmonic Phase
Select
44114
0x1011
Word
UInt
1: Phase A
2: Phase B
0
3: Phase C
0: Automatic
Display Voltage
44115
0x1012
Word
UInt
1: Show as Vln
Refer to Q12
0
2: Show as Vll
 Modbus Module #3 - Input Register : System Information
Modbus Register
Parameter name
Modicom
Format
Len
Hex
Data
Type
Range
Default
value
9: 1P2W
Units
Comment
(HW): set
10: 1P3W
wiring by
11: 3P3W2CT
hardware Dip
12: 3P3W3CT
Switch
13: 3P4W
Wiring Type
30513
0x0200
Word
UInt
14: 3P3W2CT
13
(HW)
15: 3P3W3CT
(HW)
16: 3P4W
(HW)
Phase Sequence
30514
0x0201
Word
0: Negative
Only work
(ACB)
when 3P4W
UInt
1: Positive
(ABC)
Model Name
30515
0x0202
Word
UInt
Model Type
30516
0x0203
Word
UInt
3133: PM-3133
3133
0x0001: 50Hz
0x0002
0x0002: 60Hz
Firmware Version
30517
PM-3133 User‟s Manual v1.07
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0x0204
Word
BCD
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0x0100
Ver. 1.0
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
Modbus Module #4 - Input Register :Power value (Float)
Parameter
name
Modbus Register
Len
Modicom Format
Data Type
Range
Units
V_a
34353-34354
0x1100-0x1101
DWord
Float
Volt
I_a
34355-34356
0x1102-0x1103
DWord
Float
Amp
kW_a
34357-34358
0x1104-0x1105
DWord
Float
kW
kvar_a
34359-34360
0x1106-0x1107
DWord
Float
kvar
kVA_a
34361-34362
0x1108-0x1109
DWord
Float
kVA
PF_a
34363-34364
0x110A-0x110B
DWord
Float
kWh_a
34365-34366
0x110C-0x110D
DWord
Float
kvarh_a
34367-34368
0x110E-0x110F
DWord
Float
kVAh_a
34369-34370
0x1110-0x1111
DWord
Float
V_b
34371-34372
0x1112-0x1113
DWord
Float
Volt
I_b
34373-34374
0x1114-0x1115
DWord
Float
Amp
kW_b
34375-34376
0x1116-0x1117
DWord
Float
kW
kvar_b
34377-34378
0x1118-0x1119
DWord
Float
kvar
kVA_b
34379-34380
0x111A-0x111B
DWord
Float
kVA
PF_b
34381-34382
0x111C-0x111D
DWord
Float
kWh_b
34383-34384
0x111E-0x111F
DWord
Float
kvarh_b
34385-34386
0x1120-0x1121
DWord
Float
kVAh_b
34387-34388
0x1122-0x1123
DWord
Float
V_c
34389-34390
0x1124-0x1125
DWord
Float
Volt
I_c
34391-34392
0x1126-0x1127
DWord
Float
Amp
kW_c
34393-34394
0x1128-0x1129
DWord
Float
kW
kvar_c
34395-34396
0x112A-0x112B
DWord
Float
kvar
kVA_c
34397-34398
0x112C-0x112D
DWord
Float
kVA
PF_c
34399-34400
0x112E-0x112F
DWord
Float
kWh_c
34401-34402
0x1130-0x1131
DWord
Float
kvarh_c
34403-34404
0x1132-0x1133
DWord
Float
kVAh_c
34405-34406
0x1134-0x1135
DWord
Float
V_avg
34407-34408
0x1136-0x1137
DWord
Float
Volt
I_avg
34409-34410
0x1138-0x1139
DWord
Float
Amp
kW_tot
34411-34412
0x113A-0x113B
DWord
Float
kW
kvar_tot
34413-34414
0x113C-0x113D
DWord
Float
kvar
PM-3133 User‟s Manual v1.07
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Comment
Hex
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kVA_tot
34415-34416
0x113E-0x113F
DWord
Float
PF_tot
34417-34418
0x1140-0x1141
DWord
Float
kWh_tot
34419-34420
0x1142-0x1143
DWord
Float
kvarh_tot
34421-34422
0x1144-0x1145
DWord
Float
kVAh_tot
34423-34424
0x1146-0x1147
DWord
Float
Freq_a
34425-34426
0x1148-0x1149
DWord
Float
45~65
Hz
Freq_b
34427-34428
0x114A-0x114B
DWord
Float
45~65
Hz
Freq_c
34429-34430
0x114C-0x114D
DWord
Float
45~65
Hz
Freq_max
34431-34432
0x114E-0x114F
DWord
Float
45~65
Hz
VTHD
34459-34460
0x116A-0x116B
DWord
Float
ITHD
34461-34462
0x116C-0x116D
DWord
Float
kVA
Phase set by
Harmonic Phase
Select Register
 Modbus Module #5 - Input Register :Power value (Inverse Integer)
Parameter
name
Modbus Register
Modicom Format
Len
Data
Type
Hex
Range
Units
Comment
V_a
34609- 34610
0x1200-0x1201
DWord
UInt32
0.1 Volt
I_a
34611- 34612
0x1202-0x1203
DWord
UInt32
0.1A
kW_a
34613- 34614
0x1204-0x1205
DWord
Int32
0.1kW
kvar_a
34615- 34616
0x1206-0x1207
DWord
Int32
0.1kvar
kVA_a
34617- 34618
0x1208-0x1209
DWord
Int32
0.1kVA
PF_a
34619
0x120A
Word
Int
0~1000
0.001PF
0~1.000
kWh_a
34620- 34621
0x120B-0x120C
DWord
Int32
±0~99999999
0.1kWh
±0~9999999.9
kvarh_a
34622- 34623
0x120D-0x120E
DWord
Int32
0~99999999
0.1kvarh
0~9999999.9
kVAh_a
34624- 34625
0x120F-0x1210
DWord
Int32
±0~99999999
0.1kVAh
±0~9999999.9
V_b
34626- 34627
0x1211-0x1212
DWord
UInt32
0.1 Volt
I_b
34628- 34629
0x1213-0x1214
DWord
UInt32
0.1A
kW_b
34630- 34631
0x1215-0x1216
DWord
Int32
0.1kW
kvar_b
34632- 34633
0x1217-0x1218
DWord
Int32
0.1kvar
kVA_b
34634- 34635
0x1219-0x121A
DWord
Int32
0.1kVA
PF_b
34636
0x121B
Word
Int
0~1000
0.001PF
0~1.000
kWh_b
34637- 34638
0x121C-0x121D
DWord
Int32
±0~99999999
0.1kWh
±0~9999999.9
kvarh_b
34639- 34640
0x121E-0x121F
DWord
Int32
0~99999999
0.1kvarh
0~9999999.9
kVAh_b
34641- 34642
0x1220-0x1221
DWord
Int32
±0~99999999
0.1kVAh
±0~9999999.9
V_c
34643- 34644
0x1222-0x1223
DWord
UInt32
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0.1 Volt
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I_c
34645- 34646
0x1224-0x1225
DWord
UInt32
0.1A
kW_c
34647- 34648
0x1226-0x1227
DWord
Int32
0.1kW
kvar_c
34649- 34650
0x1228-0x1229
DWord
Int32
0.1kvar
kVA_c
34651- 34652
0x122A-0x122B
DWord
Int32
0.1kVA
PF_c
34653
0x122C
Word
Int
0~1000
0.001PF
0~1.000
kWh_c
34654- 34655
0x122D-0x122E
DWord
Int32
±0~99999999
0.1kWh
±0~9999999.9
kvarh_c
34656-34657
0x122F-0x1230
DWord
Int32
0~99999999
0.1kvarh
0~9999999.9
kVAh_c
34658-34659
0x1231-0x1232
DWord
Int32
±0~99999999
0.1kVAh
±0~9999999.9
V_avg
34660-34661
0x1233-x1234
DWord
UInt32
0.1 Volt
I_avg
34662-34663
0x1235-0x1236
DWord
UInt32
0.1A
kW_tot
34664-34665
0x1237-0x1238
DWord
Int32
0.1kW
kvar_tot
34666-34667
0x1239-0x123A
DWord
Int32
0.1kvar
kVA_tot
34668-34669
0x123B-0x123C
DWord
Int32
0.1kVA
PF_tot
34670
0x123D
Word
Int
0~1000
0.001PF
0~1.000
kWh_tot
34671-34672
0x123E-0x123F
DWord
Int32
±0~99999999
0.1kWh
±0~9999999.9
kvarh_tot
34673-34674
0x1240-0x1241
DWord
Int32
0~99999999
0.1kvarh
0~9999999.9
kVAh_tot
34675-34676
0x1242-0x1243
DWord
Int32
±0~99999999
0.1kVAh
±0~9999999.9
Freq_a
34677
0x1244
Word
Int
45~65
1Hz
45~65
Freq_b
34678
0x1245
Word
Int
45~65
1Hz
45~65
Freq_c
34679
0x1246
Word
Int
45~65
1Hz
45~65
Freq_max
34680
0x1247
Word
Int
45~65
1Hz
45~65
 Modbus Module #6 - Input Register :Power value (Integer)
Parameter
name
Modbus Register
Modicom Format
Len
Data
Type
Hex
Range
Units
V_a
34865-34866
0x1300-0x1301
DWord
UInt32
0.1 Volt
I_a
34867-34868
0x1302-0x1303
DWord
UInt32
0.1A
kW_a
34869-34870
0x1304-0x1305
DWord
Int32
0.1kW
kvar_a
34871-34872
0x1306-0x1307
DWord
Int32
0.1kvar
kVA_a
34873-34874
0x1308-0x1309
DWord
Int32
0.1kVA
PF_a
34875
0x130A
Word
kWh_a
34876-34877
0x130B-0x130C
DWord
kvarh_a
34878-34879
0x130D-0x130E
kVAh_a
34880-34881
0x130F-0x1310
PM-3133 User‟s Manual v1.07
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Int
Comment
0~1000
0.001PF
0~1.000
Int32
±0~99999999
0.1kWh
±0~9999999.9
DWord
Int32
0~99999999
0.1kvarh
0~9999999.9
DWord
Int32
±0~99999999
0.1kVAh
±0~9999999.9
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V_b
34882-34883
0x1311-0x1312
DWord
UInt32
0.1 Volt
I_b
34884-34885
0x1313-0x1314
DWord
UInt32
0.1A
kW_b
34886-34887
0x1315-0x1316
DWord
Int32
0.1kW
kvar_b
34888-34889
0x1317-0x1318
DWord
Int32
0.1kvar
kVA_b
34890-34891
0x1319-0x131A
DWord
Int32
0.1kVA
PF_b
34892
0x131B
Word
kWh_b
34893-34894
0x131C-0x131D
DWord
kvarh_b
34895-34896
0x131E-0x131F
kVAh_b
34897-34898
V_c
Int
0~1000
0.001PF
0~1.000
Int32
±0~99999999
0.1kWh
±0~9999999.9
DWord
Int32
0~99999999
0.1kvarh
0~9999999.9
0x1320-0x1321
DWord
Int32
±0~99999999
0.1kVAh
±0~9999999.9
34899-34900
0x1322-0x1323
DWord
UInt32
0.1 Volt
I_c
34901-34902
0x1324-0x1325
DWord
UInt32
0.1A
kW_c
34903-34904
0x1326-0x1327
DWord
Int32
0.1kW
kvar_c
34905-34906
0x1328-0x1329
DWord
Int32
0.1kvar
kVA_c
34907-34908
0x132A-0x132B
DWord
Int32
0.1kVA
PF_c
34909
0x132C
Word
Int
kWh_c
34910-34911
0x132D-0x132E
DWord
kvarh_c
34912-34913
0x132F-0x1330
kVAh_c
34914-34915
V_avg
0~1000
0.001PF
0~1.000
Int32
±0~99999999
0.1kWh
±0~9999999.9
DWord
Int32
0~99999999
0.1kvarh
0~9999999.9
0x1331-0x1332
DWord
Int32
±0~99999999
0.1kVAh
±0~9999999.9
34916-34917
0x1333-0x1334
DWord
UInt32
0.1 Volt
I_avg
34918-34919
0x1335-0x1336
DWord
UInt32
0.1A
kW_tot
34920-34921
0x1337-0x1338
DWord
Int32
0.1kW
kvar_tot
34922-34923
0x1339-0x133A
DWord
Int32
0.1kvar
kVA_tot
34924-34925
0x133B-0x133C
DWord
Int32
0.1kVA
PF_tot
34926
0x133D
Word
Int
kWh_tot
34927-34928
0x133E-0x133F
DWord
kvarh_tot
34929-34930
0x1340-0x1341
kVAh_tot
34931-34932
0x1342-0x1343
Freq_a
34933
Freq_b
0~1000
0.001PF
0~1.000
Int32
±0~99999999
0.1kWh
±0~9999999.9
DWord
Int32
0~99999999
0.1kvarh
0~9999999.9
DWord
Int32
±0~99999999
0.1kVAh
±0~9999999.9
0x1344
Word
Int
45~65
1Hz
45~65
34934
0x1345
Word
Int
45~65
1Hz
45~65
Freq_c
34935
0x1346
Word
Int
45~65
1Hz
45~65
Freq_max
34936
0x1347
Word
Int
45~65
1Hz
45~65
PM-3133 User‟s Manual v1.07
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Chapter 7 Modbus-TCP Communication
7.1 Default settings
Ethernet default settings:
IP Address
192.168.255.1
Subnet mask
255.255.0.0
Gateway
192.168.0.1
Port
502
For recovering to default settings, dip Init/Run Switch (SW 4) to Init position for 10
seconds after power on, the settings will be changed as default values. Must dip back to
Run position and repower on after settings changed. User also can recover settings to
default value by Modbus command.
SW1-SW2 setting
PM-3133:Select the different wiring mode
(Please select the Software setting, if 1P2W-1CT or 1P3W-2CT is used)
Wiring
Software setting
3P3W-2CT
3P3W-3CT
3P4W-3CT
PM-3133 User‟s Manual v1.07
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SW 1
SW 2
OFF
ON
OFF
ON
OFF
OFF
ON
ON
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7.1.1 Ethernet configurations
In the Power Meter Utility, please select “Modbus TCP” in the Communication Interface.
Click “Search” to enter the “Communication Interface Setting” window.
Click ”Search” button to search the available power meter.
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Select the power meter which you want to modify parameters from the meter list, then
click ”Configuration” button to setup the meter parameters. After complete all setting,
click “OK”, and return to the meter list windows.
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7.2 Specifications
Modbus-TCP structure
Byte 00~05
Byte 06~11
6-byte header
RTU Data
Modbus-TCP( Byte 00~05)
Byte 00
Byte 01
Transaction identifier
Byte 02
Byte 03
Protocol identifier
Byte 04
Byte 05
Data length
Data length
upper byte
lower byte
Transaction identifier = Assign by Modbus/TCP Master (Client)
Protocol identifier = 0
Data length (upper byte) = 0
Data length (lower byte) = Depend on the number of the RTU Data bytes
RTU Data structure
Byte 06
Net ID
(Station number)
Byte 07
Byte 08-09
Byte 10-11
Data as needed
Function Code
Address Mapping
data
Net ID (Station number): Assign the device (Modbus/TCP slave)。
7.2.1 Modbus Register
Please refer the 6.2.2 Modbus Register。
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7.3 Connecting the Power and Host PC (without PoE)
Power over Ethernet (PoE):
The PM-3133-xxx-MTCP module can be powered by an IEEE802.3af
compliant PoE switch. Both Ethernet and power can be carried by an
Ethernet cable eliminating the need for additional wiring and power
supply.
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Chapter 8 CANopen communication
8.1 CANopen setting

Default setting for CANopen: Baud rate:125 K b.p.s. , Node ID:1

DIP switch (SW1-SW6) is used for Node ID setting, default is 1, i.e. all OFF
For example: Node ID is 10,find the table of DIP switch 1-6 is
ON, OFF, OFF, ON, OFF, OFF

SW1-SW6 setting
Setting CANopen Node ID for communication (1-64)
Modbus Address
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
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SW 1
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
SW 2
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
SW 3
OFF
OFF
OFF
OFF
ON
ON
ON
ON
OFF
OFF
OFF
OFF
ON
ON
ON
ON
OFF
OFF
OFF
OFF
ON
ON
ON
ON
OFF
OFF
OFF
SW 4
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
ON
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OFF
OFF
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OFF
OFF
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OFF
ON
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SW 5
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
SW 6
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
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ON
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 SW7-SW8 setting
PM-3133:For CANopen Baud Rate Setting
Baud Rate
SW 7
SW8
125 K bps(Default)
OFF
OFF
250 K bps
ON
OFF
500 K bps
OFF
ON
1M bps
ON
ON
 SW9-SW10 setting
PM-3133-CPS:Select the different wiring mode
(Please select the Software setting, if 1P2W-1CT or 1P3W-2CT is used)
Wiring
Software setting
3P3W-2CT
3P3W-3CT
3P4W-3CT
SW 9
SW 10
OFF
ON
OFF
ON
OFF
OFF
ON
ON
8.2 CANopen Protocol
The CANopen is a kind of network protocols evolving from the CAN bus, used on car
control system in early days, and has been greatly used in various applications, such as
vehicles, industrial machines, building automation, medical devices, maritime
applications, restaurant appliances, laboratory equipment & research.
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8.2.1 SDO Introduction
8.2.1.1 Upload SDO Protocol
Initiate SDO Upload Protocol
Before transferring the SDO segments, the client and server need to communicate with
each other by using the initiate SDO upload protocol. Via the initiate SDO upload
protocol, the SDO client will inform the SDO server what object the SDO client wants to
request. As well, the initiate SDO upload protocol is permitted to transmit up to four
bytes of data. Therefore, if the data length of the object, which the SDO client can read,
is equal to or less than the permitted data amount, the SDO communication will be
finished only by using the initial SDO upload protocol, i.e. if the data upload is less
enough to be transmitted in the initiate SDO upload protocol, then the upload SDO
segment protocol will not be used. The communication process of this protocol is shown
as follows.
ccs: client command specified
2: initiate upload request
scs: server command specified
2: initiate upload response
n : Only valid if e = 1 and s = 1, otherwise 0.
If valid, it indicates the number of bytes in d that do not contain data. Bytes [8-n, 7]
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do not contain segment data.
e: transfer type
0: normal transfer
1: expedited transfer
If the e=1, it means that the data of the object are equal or less than 4 bytes, and
only initiate SDO upload protocol is needed. If e=0, the upload SDO segment
protocol is necessary.
s: size indicator
0: Data set size is not indicated.
1: Data set size is indicated.
m: multiplexer
It represents the index/sub-index of the data to be transfer by the SDO. The first
two bytes are the index value and the last byte is the sub-index value.
d: data
e=0, s=0: d is reserved for further use.
e=0, s=1: d contains the number of bytes to be uploaded, and byte 4 contains the
least significant bit, and byte 7 contains the most significant bit.
e=1, s=1: d contains the data of length 4-n to be uploaded, the encoding depends
on the type of the data referenced by index and sub-index.
e=1, s=0: d contains unspecified number of bytes to be uploaded.
x: not used, always 0
reserved: reserved for further use , always 0
Upload SDO Segment Protocol
When the upload data length is over 4 bytes, the upload SDO segment protocol will be
needed. After finishing the transmission of the initiate SDO upload protocol, the SDO
client will start to upload the data. The upload SDO segment protocol will comply with
the process shown below.
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ccs: client command specified
3: upload segment request
scs: server command specified
0: upload segment response
t: toggle bit.
This bit must alternate for each subsequence segment that is uploaded. The first
segment will have the toggle bit set to 0. The toggle bit will be equal for the
request and response message.
c : indicates whether where are still more segments to be uploaded
0: more segments to be uploaded.
1: no more segment to be uploaded.
seg-data: It is at most 7 bytes of segment data to be uploaded.
The encoding depends on the type of the data referenced by index and sub-index.
n: It indicates the number of bytes in seg-data that do not contain segment data.
Bytes [8-n, 7] do not contain segment data. n = 0 if no segment size is indicated.
x: not used, always 0
reserved: reserved for further use , always 0
8.2.1.2 Download SDO Protocol
Initiate SDO Download Protocol
The download modes are similar to the upload modes, but different in some parameters
of the SDO messages. They are also separated into two steps. If the download data
length is less than 4 bytes, the download action will finish in the download initialization
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protocol. Otherwise, the download segment protocol will be needed. These two
protocols are shown below.
ccs: client command specified
1: initiate download request
scs: server command specified
3: initiate download response
n: Only valid if e = 1 and s = 1, otherwise 0.
If valid, it indicates the number of bytes in d that do not contain data. Bytes [8-n, 7]
do not contain segment data.
e: transfer type
0: normal transfer
1: expedited transfer
If the e=1, it means that the data of the object are equal or less than 4 bytes, and
only initiate SDO download protocol is needed. If e=0, the download SDO segment
protocol is necessary.
s: size indicator
0: Data set size is not indicated.
1: Data set size is indicated.
m: multiplexer
It represents the index/sub-index of the data to be transfer by the SDO. The first
two bytes are the index value and the last byte is the sub-index value.
d: data
e=0, s=0: d is reserved for further use.
e=0, s=1: d contains the number of bytes to be downloaded, and byte 4 contains
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the least significant bit, and byte 7 contains the most significant bit.
e=1, s=1: d contains the data of length 4-n to be downloaded, the encoding
depends on the type of the data referenced by index and sub-index.
e=1, s=0: d contains unspecified number of bytes to be downloaded.
x: not used, always 0
reserved: reserved for further use , always 0
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Download Segment Protocol
ccs: client command specified
0: download segment request
scs: server command specified
1: download segment response
seg-data: It is at most 7 bytes of segment data to be downloaded.
The encoding depends on the type of the data referenced by index and sub-index.
n: It indicates the number of bytes in seg-data that do not contain segment data.
Bytes [8-n, 7] do not contain segment data. n = 0 if no segment size is indicated.
c: It indicates whether there are still more segments to be downloaded.
0:more segments to be downloaded.
1:no more segments to be downloaded.
t: toggle bit
This bit must alternate for each subsequent segment that is downloaded. The first
segment will have the toggle-bit set to 0.The toggle bit will be equal for the request
and the response message.
x: not used, always 0
reserved: reserved for further use , always 0
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8.2.1.3 Abort SDO Transfer Protocol
In some conditions, the SDO client or SDO server will terminate the SDO transmission.
For example, the value of entries that users want to modify does not exist or is read-only,
even users wouldn‟t continue the uncompleted SDO protocol under some special
situations. When these conditions occur, both the client and the server can be activated
to send the Abort SDO Transfer message. The Abort SDO Transfer protocol is shown
below.
cs: command specified
4: abort transfer request
x: not used, always 0
m: multiplexer
It represents index and sub-index of the SDO
d:
contains a 4-byte “Abort Code” about the reason for the abort.
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Abort Code
Description
0503 0000h
Toggle bit not alternated.
0504 0000h
SDO protocol timed out.
0504 0001h
Client/server command specified not valid or unknown.
0504 0002h
Invalid block size (block mode only).
0504 0003h
Invalid sequence number (block mode only).
0504 0004h
CRC error (block mode only).
0504 0005h
Out of memory.
0601 0000h
Unsupported access to an object.
0601 0001h
Attempt to read a write only object.
0601 0002h
Attempt to write a read only object.
0602 0000h
Object does not exist in the object dictionary.
0604 0041h
Object cannot be mapped to the PDO.
0604 0042h
The number and length of the objects to be mapped would exceed
PDO length.
0604 0043h
General parameter incompatibility reason.
0604 0047h
General internal incompatibility in the device.
0606 0000h
Access failed due to an hardware error.
0607 0010h
Data type does not match, length of service parameter does not
match
0607 0012h
Data type does not match, length of service parameter too high
0607 0013h
Data type does not match, length of service parameter too low
0609 0011h
Sub-index does not exist.
0609 0030h
Value range of parameter exceeded (only for write access).
0609 0031h
Value of parameter written too high.
0609 0032h
Value of parameter written too low.
0609 0036h
Maximum value is less than minimum value.
0800 0000h
General error.
0800 0020h
Data cannot be transferred or stored to the application.
0800 0021h
Data cannot be transferred or stored to the application because of
local control.
0800 0022h
Data cannot be transferred or stored to the application because of
the present device state.
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0800 0023h
Object dictionary dynamic generation fails or no object dictionary
is present (e.g. object dictionary is generated from file and
generation fails because of an file error).
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8.2.2 PDO Introduction
8.2.2.1 PDO COB-ID Parameters
Before the real-time data are transmitted by the PDO, it is necessary to check the
COB-ID parameter of this PDO in the PDO communication objects. This parameter
setting controls the COB-ID of the PDO communication, which is in 32 bits, and each bit
with its meaning is given in the table follow.
Bit Number
Value
Meaning
31(MSB)
0
PDO exits (PDO is valid)
1
PDO does not exist (PDO is not valid)
0
RTR allowed on this PDO
1
No RTR allowed on this PDO
0
11-bit ID (CAN 2.0A)
1
29-bit ID (CAN 2.0B)
0
If bit 29=0
X
If bit 29=1: 28-11 bits of 29-bit COB-ID
X
10-0 bits of COB-ID
30
29
28-11
10-0(LSB)
Note: PM-3133-CPS supports CAN 2.0A only.
In the following table, it‟s regarding the default PDO COB-ID parameters.
Default COB-ID
Number of PDO
Bit10~Bit7
(Function Code)
Bit6~Bit0
TxPDO1
0011
Node-ID
TxPDO2
0101
Node-ID
TxPDO3
0111
Node-ID
TxPDO4
1001
Node-ID
RxPDO1
0100
Node-ID
RxPDO2
0110
Node-ID
RxPDO3
1000
Node-ID
RxPDO4
1010
Node-ID
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Note:
1. Users can also define the PDO COB-ID by themselves. Actually, all COB-ID can be
defined by users except the reserved COB-ID described in the table of the section
3.1. It is important to avoid the conflict with the defined COB-ID used in the same
node.
2. The PDO COB-ID parameters cannot be changed if the PDO is valid (bit 31 =0).
8.2.2.2 Transmission Type
The transmission type is one of the several parameters defined in PDO communication
objects with sub-index 02. Each PDO has its own transmission type. The transmission
type can indicate the transmission or reception character for its corresponding PDO.
The following table describes the relationship between the value of the transmission
type and the PDO character. For example, if users used transmission type 0 for the first
TxPDO, the CANopen device will follow the rule of the acyclic and synchronous PDO
transmission.
Transmission
Type
PDO Transmission Method
cyclic
0
1-240
acyclic
synchronous
O
O
O
241-251
Asynchronous
RTR only
O
----------------------------Reserved-----------------------------------
252
O
O
253
O
254
O
255
O
O
Note:
 The transmission type 1-240 indicates how many SYNC objects the TxPDO will be
triggered. The RxPDO is always triggered by the following SYNC upon reception of
data independent of the transmission types 0-240.
 The transmission type 252 and 253 are only used for TxPDO. The transmission
type 252 means that the data is updated (but not sent) immediately after reception
of the SYNC object. For these two transmission types, the PDO is only transmitted
on remote transmission requests.
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

For the transmission types 254 and 255, the event timer will be used in the TxPDO.
The PDO, including the DI value, will be sent when the DI value is changed. And
both transmission types will directly trigger an update of the mapped data when
receiving the RxPDO.
The PM-3133-CPS doesn‟t support RxPDO.
8.2.2.3 PDO Communication Rule
The PDO related objects are indicated from index 0x1400 to 0x1BFF. For the
PM-3133-CPS, RxPDO communication objects are not used. The ranges of the TxPDO
communication objects and the mapping objects are from index 0x1800 to index 0x1813
and from index 0x1A00 to index 0x1A13 respectively. Moreover, each PDO
communication object has its own PDO mapping object.
For example, the first TxPDO communication object is stored in the entry with index
0x1800, and the corresponding mapping object is stored in an entry with index 0x1A00.
The object with index 0x1801 and the object with index 0x1A01 are a group, and so on.
Therefore, before users access the practical data via PDO communication, each
parameter for the PDO communications and mapping objects must be controlled.
Besides, only PDO communications can be used in the NMT operational state. Users
can use the NMT module control protocol to change the NMT state of the PM-3133-CPS.
It is described in the section 8.3.3. Besides, during communication via the PDO
messages, the data length of the PDO message must match with the PDO mapping
object. If the data length „L‟ of the PDO message exceeds the total bytes „n‟ of the PDO
mapping object entries, only the first 'n' bytes of the PDO message are used by the PDO
consumer. If „L‟ is less than 'n', the PDO message will not be disposed by the PDO
consumer, and an Emergency message with error code 8210h will be transmitted to the
PDO producer. The PDO communication set is shown as follows.
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COB-ID: the default PDO COB-ID, or the PDO COB-ID defined by users
L: the data length about how many bytes the PDO message has
PDO-msg: the real-time data or the data which can be mapped into the PDO mapping
objects
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8.2.3 NMT Introduction
8.2.3.1 Module Control Protocol
The NMT communication set can be applied for changing the NMT slave status. The
following figure shows how to change the different NMT statuses for the PM-3133-CPS.
Start Remote Node Protocol
cs: NMT command specified
1: start
Node ID: the node ID of the NMT slave device
Stop Remote Node Protocol
cs: NMT command specified
2: stop
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Node ID: the node ID of the NMT slave device
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Enter Pre-Operational Protocol
cs: NMT command specified
128: enter PRE-OPERATIONAL
Node ID: the node ID of the NMT slave device
Reset Node Protocol
cs : NMT command specified
129: Reset_Node
Node ID : the node ID of the NMT slave device
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Reset Communication Protocol
cs: NMT command specified
130: Reset_Communication
Node ID: the node ID of the NMT slave device
8.2.3.2 Error Control Protocol
Error Control Protocol is a kind of the solution to check whether the CANopen device is
still alive or not. And its related objects include 0x100C and 0x100D. The 0x100C is the
guard time, and the 0x100D is the life time factor. The node life time is the guard time
multiplied by the life time factor. The Node Guarding timer of the PM-3133-CPS will start
to count after receiving the first RTR message for the guarding identifier. The
communication set of the Error Control protocol is displayed below.
t: toggle bit
The value of this bit will be alternatively changed between two consecutive responses
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from the NMT slave. After the Node Guarding protocol becomes active, the value of
the toggle-bit of the first response will be 0.
s: the state of the NMT Slave
4: STOPPED
5: OPERATIONAL
127: PRE_OPERATIONAL
8.2.4 Special Functions for PM-3133-CPS
8.2.4.1 Power Meter Data Table
The PM-3133-CPS Manufacturer in the Specific Profile Area defines some entries,
which are used for the power meter data. The objects with index 0x3200~0x3208 will
map to the PDOs as below table. The D0 to D7 represent the CANopen message from
Data0 to Data7.
No.(PDO)
COB-ID
Data
Length
D0~D3
D4~D7
1
0x180+Node-ID
8
kW(Kw_a)
kWh_a
2
0x280+Node-ID
8
kW(Kw_b)
kWh_b
3
0x380+Node-ID
8
kW(Kw_c)
kWh_c
4
0x480+Node-ID
8
kW(Kw_tot)
kWh_tot
5
---
8
Volt(V_a)
Amp(I_a)
6
---
8
Volt(V_b)
Amp(I_b)
7
---
8
Volt(V_c)
Amp(I_c)
8
---
8
Volt(V_avg)
Amp(I_avg)
9
---
8
kvar(kvar_a)
kVA(Kva_a)
10
---
8
kvar(kvar_b)
kVA(Kva_b)
11
---
8
kvar(kvar_c)
kVA(Kva_c)
12
---
8
kvar(kvar_tot)
kVA(Kva_tot)
13
---
8
PF_a
kVAh_a
14
---
8
PF_b
kVAh_d
15
---
8
PF_c
kVAh_c
16
---
8
PF_tot
kVAh_tot
17
---
8
kvarh_a
Freq_a
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18
---
8
kvarh_b
Freq_b
19
---
8
kvarh_c
Freq_c
20
---
8
kvarh_tot
Freq_avg
8.3 Object Dictionary of PM-3133-CPS
8.3.1 Communication Profile Area
The following tables are regarding each entry of the communication profile area is
defined in PM-3133-CPS. For the convenient purpose, all communication entries are
divided into several tables. They are “General Communication Entries”, “TxPDO
Communication Entries”, and “TxPDO Mapping Communication Entries”.
Please note that in the table header with “Idx”, “Sidx” and “Attr” represent “index”,
“sub-index”, and “attribute” respectively. The sign “---” in the default field means that the
default is not defined or can be defined conditionally by the firmware built in
PM-311-CPS. In the table, the number accompanying letter “h” indicates that this value
is in the hex format.
General Communication Entries
Idx
Sidx Description
Type
Attr Default
1000h
0h
device type
UNSIGNED 32
RO
---
1001h
0h
error register
UNSIGNED 8
RO
---
1003h
0h
largest sub-index supported for
“predefine error field”
UNSIGNED 8
RO
0h
1h
actual error (the newest one)
UNSIGNED 32
RO
---
…
…
…
…
---
5h
actual error (the oldest one)
UNSIGNED 32
RO
---
1005h
0h
COB-ID of Sync message
UNSIGNED 32
RW 80h
1008h
0h
manufacturer device name
VISIBLE_STRING RO
1009h
0h
manufacturer hardware version
VISIBLE_STRING RO
---
100Ah 0h
manufacturer software version
VISIBLE_STRING RO
---
100Ch 0h
guard time
UNSIGNED 16
RW 0
100Dh 0h
life time factor
UNSIGNED 8
RW 0
1014h
COB-ID of EMCY
UNSIGNED 32
RW 80h+Node-ID
0h
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1015h
0h
Inhibit time of EMCY
UNSIGNED 16
RW 0
1018h
0h
largest sub-index supported for
“identity object”
UNSIGNED 8
RO
1
1h
vender ID
UNSIGNED 32
RO
---
SDO Communication Entries
Idx
Sidx Description
Type
Attr Default
1200h 0h
largest sub-index supported
for “server SDO parameter”
UNSIGNED 8
RO 2
1h
COB-ID form client to server
(RxSDO)
UNSIGNED 32
RO 600h+Node-ID
2h
COB-ID form server to clien
t(TxSDO)
UNSIGNED 32
RO 580h+Node-ID
TxPDO Communication Entries
Idx
Sidx
Description
Type
Attr
Default
1800h
0
largest sub-index supported
for “receive PDO parameter”
UNSIGNED 8
RO
5
1
COB-ID used by PDO (Tx)
UNSIGNED 32
RW
180h+Node-ID
2
transmission type
UNSIGNED 8
RW
FFh
3
inhibit time
UNSIGNED 16
RW
0
4
Reversed
…
…
…
5
event timer
UNSIGNED 16
RW
0
0
largest sub-index supported
for “receive PDO parameter”
UNSIGNED 8
RO
5
1
COB-ID used by PDO (Tx)
UNSIGNED 32
RW
280h+Node-ID
2
transmission type
UNSIGNED 8
RW
FFh
3
inhibit time
UNSIGNED 16
RW
0
4
Reversed
…
…
…
5
event timer
UNSIGNED 16
RW
0
0
largest sub-index supported
for “receive PDO parameter”
UNSIGNED 8
RO
5
1
COB-ID used by PDO (Tx)
UNSIGNED 32
RW
380h+Node-ID
2
transmission type
UNSIGNED 8
RW
FFh
3
inhibit time
UNSIGNED 16
RW
0
4
Reversed
…
…
…
1801h
1802h
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5
event timer
UNSIGNED 16
RW
0
0
largest sub-index supported
for “receive PDO parameter”
UNSIGNED 8
RO
5
1
COB-ID used by PDO (Tx)
UNSIGNED 32
RW
480h+Node-ID
2
transmission type
UNSIGNED 8
RW
FFh
3
inhibit time
UNSIGNED 16
RW
0
4
Reversed
…
…
…
5
event timer
UNSIGNED 16
RW
0
0
largest sub-index supported
for “receive PDO parameter”
UNSIGNED 8
RO
5
1
COB-ID used by PDO (Tx)
UNSIGNED 32
RW
80000000h
2
transmission type
UNSIGNED 8
RW
FFh
3
inhibit time
UNSIGNED 16
RW
0
4
Reversed
…
…
…
5
event timer
UNSIGNED 16
RW
0
…
…
…
…
…
…
1813h
0
largest sub-index supported
UNSIGNED 8
RO
5
1803h
1804h
for “receive PDO parameter”
1
COB-ID used by PDO (Tx)
UNSIGNED 32
RW
80000000h
2
transmission type
UNSIGNED 8
RW
FFh
3
inhibit time
UNSIGNED 16
RW
0
4
Reversed
…
…
…
5
event timer
UNSIGNED 16
RW
0
TxPDO Mapping Communication Entries
Idx
Sidx Description
Type
Attr
Default
1A00h
0
largest sub-index
supported for
“transmit PDO
mapping”
UNSIGNED 8
RO
2
1
read Kw_a data
INTEGER 32
RO
3200 0120h
2
read kWh_a data
INTEGER 32
RO
3201 0120h
0
largest sub-index
supported for
“transmit PDO
UNSIGNED 8
RO
2
1A01h
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mapping”
1A02h
1A03h
1A04h
1
read Kw_b data
INTEGER 32
RO
3200 0220h
2
read kWh_b data
INTEGER 32
RO
3201 0220h
0
largest sub-index
supported for
“transmit PDO
mapping”
UNSIGNED 8
RO
2
1
read Kw_c data
INTEGER 32
RO
3200 0320h
2
read kWh_c data
INTEGER 32
RO
3201 0320h
0
largest sub-index
supported for
“transmit PDO
mapping”
UNSIGNED 8
RO
2
1
read Kw_tot data
INTEGER 32
RO
3200 0420h
2
read kWh_tot data
INTEGER 32
RO
3201 0420h
0
largest sub-index
supported for
UNSIGNED 8
RO
2
“transmit PDO
mapping”
1A05h
1A06h
1A07h
1
read V_a data
INTEGER 32
RO
3202 0120h
2
read I_a data
INTEGER 32
RO
3203 0120h
0
largest sub-index
supported for
“transmit PDO
mapping”
UNSIGNED 8
RO
2
1
read V_b data
INTEGER 32
RO
3202 0220h
2
read I_b data
INTEGER 32
RO
3203 0220h
0
largest sub-index
supported for
“transmit PDO
mapping”
UNSIGNED 8
RO
2
1
read V_c data
INTEGER 32
RO
3202 0320h
2
read I_c data
INTEGER 32
RO
3203 0320h
0
largest sub-index
supported for
UNSIGNED 8
RO
2
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“transmit PDO
mapping”
1A08h
1A09h
1
read V_avg data
INTEGER 32
RO
3202 0420h
2
read I_avg data
INTEGER 32
RO
3203 0420h
0
largest sub-index
supported for
“transmit PDO
mapping”
UNSIGNED 8
RO
2
1
read kvar(kvar_a)
data
INTEGER 32
RO
3204 0120h
2
read kVA(Kva_a)
data
INTEGER 32
RO
3205 0120h
0
largest sub-index
UNSIGNED 8
RO
2
INTEGER 32
RO
3204 0220h
supported for
“transmit PDO
mapping”
1
read kvar(kvar_b)
data
2
read kVA(Kva_b)
data
INTEGER 32
RO
3205 0220h
1A0Ah 0
largest sub-index
supported for
“transmit PDO
mapping”
UNSIGNED 8
RO
2
1
read kvar(kvar_c)
data
INTEGER 32
RO
3204 0320h
2
read kVA(Kva_c)
data
INTEGER 32
RO
3205 0320h
1A0Bh 0
largest sub-index
supported for
“transmit PDO
mapping”
UNSIGNED 8
RO
2
1
read kvar_tot data
INTEGER 32
RO
3204 0420h
2
read Kva_tot data
INTEGER 32
RO
3205 0420h
1A0Ch 0
largest sub-index
UNSIGNED 8
RO
2
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supported for
“transmit PDO
mapping”
1
read PF_a data
INTEGER 32
RO
3206 0120h
2
read kVAh_a data
INTEGER 32
RO
3207 0120h
inhibit time
UNSIGNED 8
RO
2
1
read PF_b data
INTEGER 32
RO
3206 0220h
2
read kVAh_b data
INTEGER 32
RO
3207 0220h
1A0Eh 0
largest sub-index
supported for
“transmit PDO
mapping”
UNSIGNED 8
RO
2
1
read PF_c data
INTEGER 32
RO
3206 0320h
2
read kVAh_c data
INTEGER 32
RO
3207 0320h
0
largest sub-index
supported for
“transmit PDO
UNSIGNED 8
RO
2
1A0Dh 0
1A0Fh
mapping”
1A10h
1A11h
1
read PF_tot data
INTEGER 32
RO
3206 0420h
2
read kVAh_tot data
INTEGER 32
RO
3207 0420h
0
largest sub-index
supported for
“transmit PDO
mapping”
UNSIGNED 8
RO
2
1
read kvarh_a data
INTEGER 32
RO
3208 0120h
2
read Freq_a data
INTEGER 32
RO
3209 0120h
0
largest sub-index
supported for
“transmit PDO
mapping”
UNSIGNED 8
RO
2
1
read kvarh_b data
INTEGER 32
RO
3208 0220h
2
read Freq_b data
INTEGER 32
RO
3209 0220h
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1A12h
1A13h
0
largest sub-index
supported for
“transmit PDO
mapping”
UNSIGNED 8
RO
2
1
read kvarh_c data
INTEGER 32
RO
3208 0320h
2
read Freq_c data
INTEGER 32
RO
3209 0320h
0
largest sub-index
supported for
UNSIGNED 8
RO
2
“transmit PDO
mapping”
1
read kvarh_tot data
INTEGER 32
RO
3208 0420h
2
read Freq_avg data
INTEGER 32
RO
3209 0420h
8.3.2 Manufacturer Specific Profile Area
In the following table, there is information about some special functions for the
PM-3133-CPS. The index from 0x3200 to 0x3209 records the power meter
measurement parameters. The number of these entries will be automatically updated
when the PM-3133-CPS boot up. 0x320A is meter parameters information. 0x320B
stores three meter parameters including Meter Ratio, PT Ratio and RT Ratio. PT Ratio
means potential transformer ratio, the default value is 100 and the unit is 0.1. RT Ratio
means current transformer ratio, the default value is 1 and the unit is 1.
Idx
Sidx
Description
Type
Attr
Default
3200h
0
largest sub-index supported for
“kW”
UNSIGNED 8
RO
4
1
kW(Kw_a)
INTEGER32
RO
0
2
kW(Kw_b)
INTEGER32
RO
0
3
kW(Kw_c)
INTEGER32
RO
0
4
kW(Kw_tot)
INTEGER32
RO
0
0
largest sub-index supported for
“kWh”
UNSIGNED 8
RO
4
1
kWh_a
INTEGER32
RO
0
3201h
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3202h
3203h
3204h
3205h
3206h
3207h
2
kWh_b
INTEGER32
RO
0
3
kWh_c
INTEGER32
RO
0
4
kWh_tot
INTEGER32
RO
0
0
largest sub-index supported for
“Volt”
UNSIGNED 8
RO
4
1
Volt(V_a)
INTEGER32
RO
0
2
Volt(V_b)
INTEGER32
RO
0
3
Volt(V_c)
INTEGER32
RO
0
4
Volt(V_avg)
INTEGER32
RO
0
0
largest sub-index supported for
“Amp”
UNSIGNED 8
RO
4
1
Amp(I_a)
INTEGER32
RO
0
2
Amp(I_b)
INTEGER32
RO
0
3
Amp(I_c)
INTEGER32
RO
0
4
Amp(I_avg)
INTEGER32
RO
0
0
largest sub-index supported for
“kvar”
UNSIGNED 8
RO
4
1
kvar(kvar_a)
INTEGER32
RO
0
2
kvar(kvar_b)
INTEGER32
RO
0
3
kvar(kvar_c)
INTEGER32
RO
0
4
kvar(kvar_tot)
INTEGER32
RO
0
0
largest sub-index supported for
“kVA”
UNSIGNED 8
RO
4
1
kVA(Kva_a)
INTEGER32
RO
0
2
kVA(Kva_b)
INTEGER32
RO
0
3
kVA(Kva_c)
INTEGER32
RO
0
4
kVA(Kva_tot)
INTEGER32
RO
0
0
largest sub-index supported for
“PF”
UNSIGNED 8
RO
4
1
PF_a
INTEGER32
RO
0
2
PF_b
INTEGER32
RO
0
3
PF_c
INTEGER32
RO
0
4
PF_tot
INTEGER32
RO
0
0
largest sub-index supported for
UNSIGNED 8
RO
4
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“kVAh”
3208h
3209h
320Ah
1
kVAh_a
INTEGER32
RO
0
2
kVAh_b
INTEGER32
RO
0
3
kVAh_c
INTEGER32
RO
0
4
kVAh_tot
INTEGER32
RO
0
0
largest sub-index supported for
“kvarh”
UNSIGNED 8
RO
4
1
kvarh_a
INTEGER32
RO
0
2
kvarh_b
INTEGER32
RO
0
3
kvarh_c
INTEGER32
RO
0
4
kvarh_tot
INTEGER32
RO
0
0
largest sub-index supported for
“Frequency”
UNSIGNED 8
RO
4
1
Freq_a
INTEGER32
RO
0
2
Freq _b
INTEGER32
RO
0
3
Freq _c
INTEGER32
RO
0
4
Freq _avg
INTEGER32
RO
0
0
largest sub-index supported for
object
UNSIGNED 8
RO
2
1
PT Ratio
UNSIGNED 16 RW
100
2
CT Ratio
UNSIGNED 16 RW
1
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3
Software Wiring
UNSIGNED 8
RW
(Only work when SW9-SW10 is all off)
3
(1: 1P2W
2: 1P3W
3:
3P3W2CT
4:
3P3W3CT
5:
3P4W3CT)
320Bh
0
largest sub-index supported for
object
UNSIGNED 8
1
Set Energy to Zero
UNSIGNED 16 RW
0x0055
2
Reset to Factory Settings
UNSIGNED 16 RW
0x0055
3
Default Frequency
UNSIGNED 16 RW
0x0055
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8.3.3 Application Object
The users can write the object the value 65766173h to object with index 1010h and
subindex 1 to save the application setting, or write the value 64616F6Ch to object with
index 1011h and subindex 1 and reboot the module to load the factory default.
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Appendix 1: Questions & Answers
Q1. Can we use the other 5A CT’s (like 300/5) to directly connect to the input current
terminals of PM-3133 series?
No, because the input current is only mA size on PM-3133 series,definitely not to
directly use other 5A CT‟s to connect and apply(like100/5…)
,It could causes the fetal
damages. Users can use the PM-3133 series attached split type clip-on CT to connect
the other CT‟s secondary test 5A current.
Q2. If I want to replace the failed split type clip-on CT, can I just detach it? Anything I
should pay more attention to?
In any circumstance, please make sure the CT had been disconnected with the power
cable of monitoring equipments before the CT lines detach from the terminals of the
smart meter. Otherwise, it will cause the severe injury.
Q3. If the turn point of the split type clip-on CT has broken, or inner Ferrite-core has
broken, how to settle this condition?
The measure data will be not accuracy as before, please do not use any more.
You need the new CT.
Q4. If multiple set of meters being installed,Can I detach the CT’s and mix use with
each other?
Please do not mix use,because each set of smart meter(PM-3133 series) and its
attached split type clip-on CT are calibrated set by set. The mix use may cause the
wrong measurements.
Q5. What problem is while the measured readings of the power consumption(kw)is
negative?
(1) First check the current input end – line terminal, (check the connection should be
CT1-K, CT1-L, CT2-K, CT2-L, CT3-K, CT3-L),base on white black, white black,
white black follow the sequence order
(2) Check the field current direction(K→L)is same as the inner arrow direction of the
split type clip-on CT.
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Q6. PC and meter cannot make the connection with RS-485?
(1) Confirm the Modbus Address, default is 1.
(2) Confirm the Band Rate, default is 19200.
(3) Confirm the stop bit, default is 1.
(4) Confirm the RS-485 connection, make sure the D+/D- is right.
(5) Confirm the RS-485 master have to provide the bias for PM-3133 series. Otherwise,
the tM-SG4 or SG-785 should be added to provide the bias. All ICP DAS controllers
and converters provide the bias.
Q7. What the power cable diameter (mm) of the monitoring equipments should be for
the various CT’s?
Power cable diameter <Φ10 use 60A CT,Φ10~Φ16 use 100A CT,Φ16~Φ24 use
200A CT,Φ36 use 300A CT,Φ36 use 400A CT
Q8. Regarding to the split type clip-on CT’s, if the wire is not long enough?
Φ10, Φ16, Φ24 split type CT,the standard length is 1.8M.
Φ36 split type CT,the standard length is 4M.
For special length, please contact ICP DAS.
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Q9. How to measure the current large than 400A?
The CT of PM-3133 maximum range is 400A. If the target is more than 400A, we suggest
the solution as follow.
For example the target is to measure maximum 800A current. We can measure big CT
output and set a CT Ratio.
Note:
A. Primary CT accuracy will influence the measurement.
B. Even primary CT output current max is 5A, please don‟t wire to PM-3313 and PM-3133P
directly.
You need to choose primary current Transformers, please refer to
http://www.omega.com/pptst/MFO_RCT.html
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Q10. Can I use CT's that I currently own with PM-3133 Power Meter?
You can use CT's that you currently own with PM-3133P (without CTs) Power Meter.
The CT inputs of the PM-3133P can handle a maximum of 333mV of AC current.
PM-3133P's current ratio is always full scale to 5A. CT ratio can be set internally to work
with up to 1200 amp CTs.
Adding current transformer (333mV Output CTs) has the effect of reducing the measured
current by the CT ratio (let's say 40:1 for 200A CT as example). So a current of 200A
becomes 5A. Since the meter sees 5A, many of the measurements it reports will be low
by a factor of 40 unless they are scaled up by 40.
Current
transformer
CT Ratio
CT Ratio
(PM-3133P)
Current
transformer
50A CT
10:1
400A CT
80:1
60A CT
12:1
800A CT
160:1
100A CT
20:1
1000A CT
200:1
200A CT
40:1
1200A CT
240:1
(PM-3133P)
Note:
A. Please use low phase angle error CTs: essential for accurate power and energy
measurements. (Example: phase error <2°)
B. Primary CT accuracy will influence the measurement.
C. PM-3133P only for external 333mV Output CTs.
Safe: burden resistor built-in, 333 mVac voltage output at rated full scale current, no
shorting blocks needed.
D. This meter requires external CT(s) to operate:
1P2W-1CT requires 1 CT per meter.
3P3W-2CT/1P3W-2CT requires 2 CTs per meter.
3P4W-3CT/3P3W-3CT requires 3 CTs per meter.
Q11. What is the difference between line to line voltages to line to ground voltage?
On a three phase wye connected system line to line voltages will be the voltages between
the terminals A - B, B - C, A - C. On a three phase wye connected system line to ground
voltages will be the voltages between the terminals A - N, B - N, C - N. To calculate the line
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to ground voltages divide the line voltage by the square root of three which equals 1.73. An
example, on a 380 volt wye system, line to line voltage is 380 volts and line to ground
voltage is 380/1.73 = 220 volts
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Q12. How to set up [Display Voltage] register value to correctly display line to ground
voltage or line to line voltage?
The voltage [V_x] register in Modbus register table can be used to show line-to-ground
voltage or line-to-line voltage value by setting [Display Voltage] register value. According to
different wiring types, it is required to set different [Display Voltage] value. If the voltage is not
displayed as expected value, please refer to the table below and check if the setting value is
set accurately.
Line to Ground Voltage
Line to Line Voltage
3P3W-2CT
[Display Voltage] = 1 (Show as Vln) [Display Voltage] = 0 (Automatic)
3P3W-3CT
[Display Voltage] = 0 (Automatic)
[Display Voltage] = 2 (Show as Vll)
3P4W-3CT
[Display Voltage] = 0 (Automatic)
[Display Voltage] = 2 (Show as Vll)
Q13. How about the harmonic (THD) analysis capability?
The number of harmonics N that can be analyzed within the 2.8 kHz pass band is the whole
number of 2800/f. The absolute maximum number of harmonics accepted by the Energy
Metering IC is 63.
N = [2800/f], N ≤ 63
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Q14. How to measure the Voltage large than 500V?
For service voltage above 600 Vac, voltage transformers (PTs) are used to step down the
voltage to a lower range that will work with a PM-3133 meter.
Selecting a Transformer:
Selecting the right voltage transformer is simple. Review the following
considerations to determine the best fit for your application.
Input Voltage:
Select a transformer that will operate on the supply voltage available at your facility
(Example: PRI. Voltage 720V; SEC. Voltage 120V). Check the connection diagram
(three-phase Y and delta; phase sequence) to ensure compatibility.
Adding potential transformers has the effect of reducing the measured line voltage by the PT
ratio (let's say 6:1 for this example). So a voltage of 720 Vac becomes 120 Vac. Since the
meter sees 120 Vac, many of the measurements it reports will be low by a factor of 6 unless
they are scaled up by 6.
Frequency:
If you are operating in the United States, you will most likely be operating on 60 Hz. However
should you need a 50 Hz rated transformer.
Accuracy: Transformer (PT) accuracy (Example: 1% or 3%) will influence the measurement.
Rated Output (VA): Example: 150 VA (50VA per phase).
PM-3133 User‟s Manual v1.07
Copyright © ICP DAS Co., Ltd.
Last Revised: Sep. 2015
All Rights Reserved.
www.icpdas.com
Page: 73
 E-mail: service@icpdas.com
Q15. The Power Meter can be connected to a remote display (via RS-485).
A: Power Meter can be connected to VPD-13x or VPD-14x series via RS-485:
B: Two Masters Share One Slave (via tSH-735):
This function allows two master devices connected to different serial ports to share
slave devices. Modbus mode can be used to convert the Modbus RTU/ASCII
protocols, while raw data mode can be used for DCON or other query-response
protocols. Different baud rates and data formats can also be used on the different
serial ports. The built-in cache function reduces the loading of serial communication
on the slave port by removing duplicated queries when the two master devices are
requesting the same information.
PM-3133 User‟s Manual v1.07
Copyright © ICP DAS Co., Ltd.
Last Revised: Sep. 2015
All Rights Reserved.
www.icpdas.com
Page: 74
 E-mail: service@icpdas.com
Appendix 2: PVC wire and model
Quantity
/Diameter
(mm)
Wire
external
diameter
(mm)
Reference
current (A)
Flat
1.6
3.2
15
cable
2.0
3.6
20
7/0.6
7/0.8
7/1.0
7/1.2
7/1.6
7/2.0
7/2.3
7/2.6
19/1.8
19/2.0
19/2.3
19/2.6
19/2.9
37/2.3
37/2.6
3.4
4.0
5.0
6.0
7.6
9.2
10.5
11.5
13.0
14.0
15.5
17.0
19.0
21.0
23.0
17
20
30
40
55
70
90
100
120
140
165
190
220
250
300
copper wire
Item
Twisted
pair
AWG
SIZE
2
(mm )
2.0
3.5
5.5
8.0
14
22
30
38
50
60
80
100
125
150
200
CT size and
product model
CT spec.
(internal
diameter/Max
. current)
Ø 10
(PM-3133-100)
10mm/60A
Ø 16
(PM-3133-160)
16mm/100A
Ø 24
(PM-3133-240)
24mm/200A
*Wire and current will have discrepancy because of the temperature, material and brand
PM-3133 User‟s Manual v1.07
Copyright © ICP DAS Co., Ltd.
Last Revised: Sep. 2015
All Rights Reserved.
www.icpdas.com
Page: 75
 E-mail: service@icpdas.com
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