M-system R9EWTU User manual

5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-6224 Rev.9 P. 1 / 21
INSTRUCTION MANUAL
MULTI POWER MONITORING UNIT
(clamp-on current sensor CLSE, Modbus/TCP) MODEL R9EWTU
BEFORE USE ....
Thank you for choosing M-System. Before use, please check
contents of the package you received as outlined below.
If you have any problems or questions with the product,
please contact M-System’s Sales Office or representatives.
■PACKAGE INCLUDES:
Multi power monitoring unit..............................................(1)
Upper mounting adaptor ....................................................(2)
■MODEL NO.
Confirm Model No. marking on the product to be exactly
what you ordered.
■INSTRUCTION MANUAL
This manual describes necessary points of caution when
you use this product, including installation, connection and
basic maintenance procedures.
This unit is programmable by using the PC Configurator
Software. For detailed information on the PC configuration,
refer to the PMCFG users manual. The PMCFG PC Con-
figurator Software is downloadable at M-System’s web site:
http://www.m-system.co.jp
POINTS OF CAUTION
■AUXILIARY POWER INPUT RATING & OPERATIONAL RANGE
• Locate the auxiliary power input rating marked on the
product and confirm its operational range as indicated
below:
100 – 240V AC rating: 85 – 264V, 50/60 Hz, < 9VA
110 – 240V DC rating: 99 – 264V, < 3W
■GENERAL PRECAUTIONS
• Before you remove or mount the unit, turn off the power
supply and input signal for safety.
• DO NOT set the switches on the module while the power
is supplied. The switches are used only for maintenance
without the power.
■ENVIRONMENT
• Indoor use.
• Do not install the unit where it is directly exposed to rain,
water droplets or sunlight.
• When heavy dust or metal particles are present in the
air, install the unit inside proper housing with sufficient
ventilation.
• Do not install the unit where it is subjected to continuous
vibration. Do not subject the unit to physical impact.
• Environmental temperature must be within -10 to +55°C
(14 to 131°F) with relative humidity within 30 to90% RH
in order to ensure adequate life span and operation.
■WIRING
• Wiring to the unit must be conducted by qualified service
personnel.
• Do not install cables close to noise sources (relay drive
cable, high frequency line, etc.).
• Do not bind these cables together with those in which
noises are present. Do not install them in the same duct.
■AND ....
• The unit is designed to function as soon as power is sup-
plied, however, a warm up for 10 minutes is required for
satisfying complete performance described in the data
sheet.

R9EWTU
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-6224 Rev.9 P. 2 / 21
COMPONENT IDENTIFICATION
Terminal Block, Current Input 2
SD Card Slot
PC Configurator Connection Jack
RUN
LINK
LK100
COL
Status Indicator LED
Terminal Block, Current Input 1
RJ-45 Connector for
Modbus/TCP (Ethernet)
TOP VIEW
FRONT VIEW
Operating Mode Setting DIP SW (SW1)
Terminal Block,
Voltage Input / Auxiliary Power Supply
T1 3K
T2 3L
1718
89
1K 3K
1L 3L
1516
67
1K 3K
1L 3L
1314
45
1K 3K
1L 3L
1112
23
1K
1L
10
18ch 7ch8ch 6ch7ch 5ch6ch 5ch
8ch 7ch8ch 6ch7ch 5ch6ch 5ch
NC 1L
NC 1K
21
1110
3L 1L
3K 1K
43
1312
3L 1L
3K 1K
65
1514
3L 1L
3K 1K
87
1716
3L
3K
9
18
P1
4
U(+) V(−)
P2 P3
21
65
FE1
N
3
71ch 2ch1ch 3ch2ch 4ch3ch 4ch
1ch 2ch1ch 3ch2ch 4ch3ch 4ch
Unused
■STATUS INDICATOR LED
ID COLOR S TAT E FUNCTION
SDCard Red Blinking
approx. 1 Hz
The unit is preparing to write.
The LED starts blinking 30 seconds before the unit starts writing in the SD card on
the hour every hour.
DO NOT extract the card while the LED shows the blinking pattern until the writing
is complete.
2 sec.
SD card access error.
The unit is unable to normally write in the card because it is full or its data contents
are damaged.
2 sec.
SD card partial access error.
The unit was unable to write in the card for unknown reason but now is recovered. A
part of the data contents is missing.
OFF SD card not inserted.
ON SD card inserted.
Blinking
approx. 2 Hz
The unit is writing in the SD card.
DO NOT extract the card.
Power Red ON Normal
Blinking
approx. 0.5 Hz
Input overload or no input
Blinking
approx. 2 Hz
Setting error or device error
2 sec.
Internal calendar error or calendar backup battery life expired.
Re-set the calendar with the PC Configurator.
The LED blinks in the designated pattern every time when the power is turned on
after the battery life has been expired.
OFF Device error
RUN Red ON Normal communication
LINK Red ON 10BASE or 100BASE LINK
LK100 Red Blinking 100BASE transmitting/receiving
COL Red Blinking Collision

R9EWTU
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-6224 Rev.9 P. 3 / 21
■OPERATING MODE SETTING
(*) Factory setting
• System Conguration (SW1-1, 2)
SW1-1 SW1-2 SYSTEM CONFIGURATION
OFF OFF Three-phase / 3-wire (*)
ON OFF Single-phase / 2-wire
OFF ON Single-phase / 3-wire
ON ON ---
• Balanced or Unbalanced Load (SW1-3)
SW1-3 BALANCED / UNBALANCED
OFF Unbalanced (*)
ON Balanced
• Clamp Sensor Type (SW1-4, 5, 6)
SW1-4 SW1-5 SW1-6 CLAMP SENSOR TYPE
OFF OFF OFF CLSE-R5 (5A) (*)
ON OFF OFF CLSE-05 (50A)
OFF ON OFF CLSE-10 (100A)
OFF OFF ON CLSE-20 (200A)
ON ON OFF CLSE-40 (400A)
OFF ON ON CLSE-60 (600A)
• Conguration Mode (SW1-8)
SW1-8 CONFIGURATION MODE
OFF DIP switch setting (*)
(PC Configurator setting is invalid.)
ON PC Configurator and communication
(DIP switch setting is invalid.)
Note 1: Turn on the power supply to the unit after setting
operating mode.
Note 2: Be sure to set unused SW1-7 to OFF.
Note 3: Clamp sensor type setting is common to all circuits.
Note 4: The sensor type and other settings for individual
circuit can be performed on the PC Configurator or via
Ethernet.
■TERMINAL ASSIGNMENTS
5
14 13
1L
1K 3K
4
3L
321
12 11 10
1L 3L 1L
1K 3K
9
18 17
T2
T1 3K
8
3L
76
16 15
6ch 6ch7ch 5ch 5ch8ch 7ch8ch
6ch 6ch7ch 5ch 5ch8ch 7ch8ch
1L 3L
1K 3K
1K
1 5ch 1L Ch.5, Current input 1L 10 5ch 1K Ch.5, Current input 1K
2 5ch 3L Ch.5, Current input 3L 11 5ch 3K Ch.5, Current input 3K
3 6ch 1L Ch.6, Current input 1L 12 6ch 1K Ch.6, Current input 1K
4 6ch 3L Ch.6, Current input 3L 13 6ch 3K Ch.6, Current input 3K
5 7ch 1L Ch.7, Current input 1L 14 7ch 1K Ch.7, Current input 1K
6 7ch 3L Ch.7, Current input 3L 15 7ch 3K Ch.7, Current input 3K
7 8ch 1L Ch.8, Current input 1L 16 8ch 1K Ch.8, Current input 1K
8 8ch 3L Ch.8, Current input 3L 17 8ch 3K Ch.8, Current input 3K
9 T2 Unused 18 T1 Unused
1 NC Unused 10 NC Unused
2 1ch 1L Ch.1, Current input 1L 11 1ch 1K Ch.1, Current input 1K
3 1ch 3L Ch.1, Current input 3L 12 1ch 3K Ch.1, Current input 3K
4 2ch 1L Ch.2, Current input 1L 13 2ch 1K Ch.2, Current input 1K
5 2ch 3L Ch.2, Current input 3L 14 2ch 3K Ch.2, Current input 3K
6 3ch 1L Ch.3, Current input 1L 15 3ch 1K Ch.3, Current input 1K
7 3ch 3L Ch.3, Current input 3L 16 3ch 3K Ch.3, Current input 3K
8 4ch 1L Ch.4, Current input 1L 17 4ch 1K Ch.4, Current input 1K
9 4ch 3L Ch.4, Current input 3L 18 4ch 3K Ch.4, Current input 3K
14
56
3K
3L 1L
15
1K
16 17 18
789
3K 1K 3K
3L 1L
10
12
NC
NC 1L
11
1K
12 13
34
3ch 3ch2ch 4ch 4ch1ch 2ch1ch
3ch 3ch2ch 4ch 4ch1ch 2ch1ch
3K 1K
3L 1L 3L
• Current Input 2
4
1
P1
U(+)
5
P2
6
23
P3
V(−) FE1
7
N
No. ID FUNCTION
1 U(+) Auxiliary power
(+)
2 V(−) Auxiliary power (−)
3 FE1 Power ground
4 P1 Voltage input P1
5 P2 Voltage input P2
6 P3 Voltage input P3
7 N Voltage input N
• Auxiliary Power Supply, Voltage Input
• Current Input 1
No. ID FUNCTION No. ID FUNCTION
No. ID FUNCTION No. ID FUNCTION

R9EWTU
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-6224 Rev.9 P. 4 / 21
INSTALLATION
■WALL MOUNTING
Attach the upper mounting adaptors to the upper side of
the unit, and pull out the lower mounting adaptors from the
lower side. Fasten a M4 screw through the mounting hole
(4.5 mm dia.) of each adaptor. (torque 1.4 N∙m)
To remove the upper mounting adaptor from the unit, pull
it out while squeezing the latches as shown in the figure
below.
push push
■DIN RAIL MOUNTING
Set the unit so that the lower mounting adaptors are at the
bottom. Hook the upper hook at the rear side of the unit
onto the DIN rail and push in the lower part of the unit.
When removing the unit, pull out the unit while pushing
down the adaptors using a minus screwdriver.
DIN Rail (35 mm wide)
Mounting Adaptor
TERMINAL CONNECTIONS
Connect the unit as in the diagram below.
■EXTERNAL DIMENSIONS unit: mm (inch)
6 (.24) 36−M3 SCREW TERMINAL
126 (4.96)
122 (DIN RAIL MOUNT)
115 (4.53) 140 (5.51)
DIN RAIL
35 mm wide
[4 (.16)]
6.5 (.25)
80 (3.15)
75 (2.95)
125 (4.92)
7.3 (.29)
7−M3.5 SCREW TERMINALS
4 − 4.5 (.18) dia. MTG HOLE

R9EWTU
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-6224 Rev.9 P. 5 / 21
■CONNECTION DIAGRAM
5
6
4
7
8
9
1L
4
P1
5
6
7
P2
P3
N
11
1K
13
14
12
3K
15
16
17
18
2
3L
1
2
U(+)
V(−)
3
FE1 3
VOLTAGE
AUX. POWER SUPPLY
VOLTAGE INPUT
CURRENT INPUT 1
Ch. 1
CURRENT
1L
1K
3K
3L
Ch. 2
CURRENT
1L
1K
3K
3L
Ch. 3
CURRENT
1L
1K
3K
3L
1L
1K
3K
3L
1L
1K
3K
3L
1L
1K
3K
3L
1L
1K
3K
3L
Ch. 4
CURRENT
Ch. 5
CURRENT
Ch. 6
CURRENT
Ch. 7
CURRENT
Ch. 8
CURRENT
CURRENT INPUT 2
4
5
3
6
7
8
10
12
13
11
14
15
16
17
1
2
AUXILIARY
POWER SUPPLY
Modbus/TCP (Ethernet)
RJ-45 CONNECTOR
EXTENSION CONNECTOR

R9EWTU
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-6224 Rev.9 P. 6 / 21
■INPUT WIRING
Use the model CLSE clamp sensor for current inputs.
The figure below shows only one circuit.
A maximum of eight (8) current sensor inputs can be connected (Ch. 1 through Ch. 8).
Grounding is not required for low voltage circuits.
N 1K 1L 3K 3L
L1
source load
N
L2
uv vu
UV VU kl
KL
kl
KL
N 1K 1L 3K 3L
L1
source load
N
L2
kl
KL
kl
KL
1K 1L
L1
source load
L2
L3
uv vu
UV VU kl
KL
1K 1L
L1
source load
L2
L3
kl
KL
N 1K 1L
L1
source load
N
kl
KL
uv
UV
N 1K 1L
L1
source load
N
kl
KL
System /
Application
Single-phase
/ 2-wire
Three-phase
/ 3-wire
balanced
load
Single-phase
/ 3-wire
1K 1L 3K 3L
L1
source load
L2
L3
uv vu
UV VU kl
KL
kl
KL
1K 1L 3K 3L
L1
source load
L2
L3
kl
KL
kl
KL
Three-phase
/ 3-wire
unbalanced
load
Terminal System /
Application Terminal
P1
P1
P1 P2 P3
P1 P2 P3
P1 P2 P3
P1 P2
P1 P3
P1 P3
P3
MOUNTING REQUIREMENTS unit: mm (inch)
Pitch 130 (5.12) min.
126 (4.96)
75 (2.95) 4–M4
■SINGLE MOUNTING
■BASIC + EXTENSION UNIT
Pitch 223 (8.78) min.
126 (4.96)
75 (2.95) 70.5 (2.78) 6–M4

R9EWTU
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-6224 Rev.9 P. 7 / 21
WIRING INSTRUCTIONS
■SOLDERLESS TERMINAL
Refer to the drawing below for recommended ring tongue terminal size. Spade tongue type is also applicable.
• M3 Screw (current input)
Applicable wire size: 0.25 to 1.65 mm2(AWG22 to 16)
Torque: 0.5 N∙m
3.3 max. (.13)
6 max.
(.24)
mm (inch)
• M3.5 Screw (auxiliary power and voltage input)
Applicable wire size: 1.04 to 2.63 mm2(AWG16 to 14)
Torque: 0.8 N∙m
3.8 max. (.15)
7 max.
(.28)
mm (inch)
CHECKING ETHERNET CONNECTION
■IP ADDRESS
The R9EWTU does not support BootP Table Software. The IP Address and Subnet Mask can be configured using the PMCFG
Configurator Software.
The Modbus/TCP Port No. is fixed at 502.
■NODE ADDRESS
The R9EWTU firmware sets its Node Address to “01.”
The Node Address (ID) is sent via Modbus together with data. Set “01” with the application software of the user.
■CHECK WIRING
Connect an Ethernet cable to the RJ-45 connector.
■CHECK LED
When wiring is correct, LINK LED is turned on with 10BASE or 100BASE link.
When the module is receiving data with 100BASE, LK100 LED blinks.
■CHECK R9EWTU CONNECTION
Enter “ping command” on the Windows MS-DOS as follows:
C:¥WINDOWS>ping ***.***.***.***
(***.***.***.***: Enter IP address in decimal.)
ping ***.***.***.*** with 32 bytes of data:
Reply from ***.***.***.*** : bytes=32 time<10ms TTL=64
Reply from ***.***.***.*** : bytes=32 time<10ms TTL=64
Reply from ***.***.***.*** : bytes=32 time<10ms TTL=64
Reply from ***.***.***.*** : bytes=32 time<10ms TTL=64
Ping statistics for ***.***.***.***
Packets:Sent=4,Received=4,Lost=0(0% loss)
Replies in case of normal connection are as shown above. If the connection cannot be established normally due to e.g. wrong
IP address, other replies such as ‘time out’ will be received.

R9EWTU
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-6224 Rev.9 P. 8 / 21
MODBUS - OPERATIONS
All registers are assigned to Holding Registers, which can be read out with Read Holding Registers or Read Input Registers
command. If reading an address with no assigned register is attempted, ‘0’ is given.
Write Multiple Registers command is used to write in registers. If writing an address with no assigned register is attempted,
‘Exception’ is given.
FUNCTION COMMAND EXPLANATION RECOMMENDED TIME OUT VALUE
03 Read Holding Registers Used to read registers 0.5 seconds
04 Read Input Registers Used to read registers 0.5 seconds
16 Write Multiple Registers Used to write in registers 2 seconds
These commands enable reading measured values and writing configurations.
One (1) word registers are represented in 16-bit integers, while two (2) word registers are in 32-bit. All registers are in the
form of signed integer unless specifically given in the explanations.
The lower digit word in a 32-bit register is assigned to the lower address (n), while the upper digit word is assigned to the
higher address (n+1).
Address n n + 1
Contents Lower digit word Upper digit word
The 32-bit register (2 words) must be read out and written in single command sequence.
It is recommended to wait for a time period indicated under ‘recommended time out value’ in the above table to receive a
response for a command. If no response is received for these time periods, take appropriate error processing such as retrying.
■MODBUS REGISTER ACCESS SETTING
ADDR. WORD PARAMETER
8977 2 Passcode entry for deactivating Modbus register write protection
Write a preset passcode in this register to deactivate the write protection via Modbus.
When the value set in this register matches the preset passcode, ‘1’ is set in the register address 8979 to en-
able writing in Modbus registers.
The value set in this register cannot be read out. It reads always ‘-1’ regardless of the set value.
When writing in the Modbus registers for setting change is complete, be sure to set a value (‘0’ is recom-
mended) other than the passcode to activate the write protection again.
8979 1 Modbus register access setting
0 : Write disable (*)
1 : Write enable
Other : Write disable
This setting is cleared when the power supply to the unit is removed. It always starts with ‘0’ (Write dis-
able) when the power supply is turned on. Set ‘1’ before writing in other registers.
Note that ‘1’ (Write enable) cannot be written in this register when the Modbus register write protection
passcode is preset and the write protection is enabled.
Be sure to write the correct passcode in the register address 8977 before changing the register setting from
‘0’ (Write disable) to ‘1’ (Write enable).
(*) Factory setting

R9EWTU
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-6224 Rev.9 P. 9 / 21
■SYSTEM OPERATIONS
System operations include resetting accumulated values and rebooting.
ADDR. WORD PARAMETER
8993 1 Reboot system
Write ‘10001’ to reboot the system. (Any other values can be written but invalid.)
8994 2 Setting Modbus register write protection passcode
Set a passcode for enabling/disabling writing in registers via Modbus.
0 : Cancel write protection (*)
1 to 999 999 999: The set value is used as the passcode
Write the passcode in the register address 8977 before setting ‘1’ in the address 8979 to deactivate the write
protection.
The value in this register is encrypted when it is read out. Only ‘0’ (Cancel write protection) is read out as it
is.
When a new passcode is written, the register address 8979 is immediately reset to ‘0’ so as to limit the next
write command in access.
8996 1 Ch. 1 Reset count
Resetting specific count values among the channel 1 counts by writing a bit pattern as shown below.
Resetting is not executed for the bits set to ‘0.’
15Bit 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Current harmonic distortion, max.
Voltage harmonic distortion, max. *
Average power, max. / min.
Average current, max. / min.
Frequency, max. / min.
Power factor, max. / min.
Power, max. / min.
Current, max. / min.
Voltage, max. / min.
Average power
Average current
Energy count per time unit
To talized energy
*Resetting voltage related values is available only at Ch. 1.
8997 1 Ch. 2 Reset count
8998 1 Ch. 3 Reset count
: : :
9003 1 Ch. 8 Reset count
9004 1 Ch. 9 Reset count (DI 1 Reset count)
With the R9WTU-ED16 module, resetting specific count values among the DI 1 counts by writing a bit pat-
tern as shown below.
Resetting is not executed for the bits set to ‘0.’
15Bit 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Pulse count per time unit
To talized pulse count
With the R9WTU-EP8 module, Ch. 9 bit pattern is identical to that for Ch. 1.
9005 1 Ch. 10 Reset count (DI 2 Reset count)
9006 1 Ch. 11 Reset count (DI 3 Reset count)
: : :
9011 1 Ch. 16 Reset count (DI 8 Reset count)

R9EWTU
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-6224 Rev.9 P. 10 / 21
MODBUS - SETTING
■SYSTEM SETTING
ADDR. WORD PARAMETER UNIT
9041 1 System configuration
0 : Single-phase / 2-wire (1CT)
1 : Single-phase / 3-wire (2CT)
2 : Three-phase / 3-wire, balanced load (1CT)
3 : Three-phase / 3-wire, unbalanced load (2CT) (*)
---
9042 1 Reserved
9043 1 Reserved
9044 2 VT rating, Primary
0 to 400 000 : Voltage (V)
Factory setting : 110
V
9046 1 VT rating, Secondary
50 to 500 : Voltage (V)
Factory setting : 110
The secondary can be set up to 500V. However, this does not mean the unit accepts 500V for
input. Do not use with the condition exceeding input rating written in the specification sheet
of the unit.
V
9047 1 Reserved
9048 1 Reserved
9049 1 Low-end cutout, Voltage
0 to 999 : Rated voltage × 0.001 × Specified value
Factory setting : 10
%/10
(*) Factory setting
■DEMAND SETTING
ADDR. WORD PARAMETER UNIT
9057 1 Average (demand) current update interval
1 to 30 : Minutes
Factory setting : 30
Data updated at the integral multiple minutes of the setting
(e.g. Setting = 15 minutes, Updated at 0, 15, 30, and 45 minutes every hour)
Minutes
9058 1 Average (demand) power update interval
1 to 30 : Minutes
Factory setting : 30
Data updated at the integral multiple minute of the setting
Minutes
■STYLE SETTING
ADDR. WORD PARAMETER
9073 1 Power factor (PF1 through PF3, PF) sign
0 : Standard (IEC), Identical to the active energy (*)
1 : Special type 1 (IEEE), Positive in LAG, Negative in LEAD
9074 1 Reactive power (Q1 through Q3, Q) sign
0 : Standard (IEC), Positive from PF = 1.0 to 180° in LAG direction; Negative for the other direction (*)
1 : Special type 1, Positive in LAG, Negative in LEAD
9075 1 Reactive power (Q1 through Q3) calculation (Q = Q1 + Q2 + Q3)
0 : Standard (*) Qn = √Sn2– Pn2
1 : Reactive power meter method Qn =
1
Nsmp
Nsmp
(Uni – Nui) Ii + (Nsmp / 4)
∑
i = 1
9076 1 Apparent power (S) calculation
0 : Standard (*) S = √P2+ Q2
1 : Sum S = S1 + S2 + S3
Note: ‘1,’ ‘2,’ ‘3’ in expressions like Q1, Q2, Q3 indicate ‘R,’ ‘S,’ ‘T phases’ respectively.

R9EWTU
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
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EM-6224 Rev.9 P. 11 / 21
■MODBUS SETTING
The device must be turned off and on in order to enable the Modbus setting.
ADDR. WORD PARAMETER UNIT
9096 1 RUN LED time out
RUN LED turns off if the unit receives no Modbus command for the specified time peri-
od.
0 to 32 000 : Specified value × 0.1 seconds
Factory setting : 10
Sec./10
9121 2 Modbus/TCP IP address
IP address is stored in the form of ‘A.B.C.D’ in the following address:
Address Upper Byte Lower Byte
9121 A B
9122 C D
Factory setting : 192.168.0.1
---
9123 2 Modbus/TCP subnet mask
Subnet mask is stored in the form of ‘A.B.C.D’ in the following address:
Address Upper Byte Lower Byte
9123 A B
9124 C D
Factory setting : 255.255.255.0
---
9125 2 Modbus/TCP default gateway
Default gateway is stored in the form of ‘A.B.C.D’ in the following address:
Address Upper Byte Lower Byte
9125 A B
9126 C D
Factory setting : 0.0.0.0
---
9127 1 Modbus/TCP port No.
0 to 65535
Factory setting : 502
---
9128 1 Modbus/TCP connection time out
Connection is severed if no communication is established for the specified time period.
0 to 32 000 : Specified value × 0.1 seconds
Factory setting : 600
Sec./10
■DATE/TIME SETTING
The three registers must be written at once.
ADDR. WORD PARAMETER
9105 3 Current date/time setting
Reading/writing the current date and time.
Data/time is stored in BCD format in the following address:
Address b15 b8 b7 b0
9105 BCD Year (00 to 99) BCD Month (01 to 12)
9106 BCD Day (01 to 31) BCD Hour (00 to 23)
9107 BCD Minute (00 to 59) BCD Second (00 to 59)

R9EWTU
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-6224 Rev.9 P. 12 / 21
■SENSOR SETTING
ADDR. WORD PARAMETER UNIT
9393 1 Ch. 1 CT rating, Primary
1 to 20 000 : Current (A)
Factory setting : 5
Valid only for the sensor type CLSE-R5. Selected sensor’s rating is automatically set for
other types of sensors.
A
9394 1 Ch. 1 Clamp sensor type
0 : CLSE-R5 (*)
1 : CLSE-05
2 : CLSE-10
3 : CLSE-20
4 : CLSE-40
5 : CLSE-60
6 : Reserved
7 : Reserved
---
9395 1 Low-end cutout, Current Ch. 1
0 to 999 : Rated current × 0.001 × Specified value
Factory setting : 10
%/10
9396 1 Reserved
9397
:
9400
4 Ch. 2 setting
Same as with the address 9393 through 9396
---
: : :
9543
:
9456
1 Ch. 16 setting
Same as with the address 9393 through 9396
Ch. 9 through 16 are valid only when the R9WTU-EP8 is used.
---

R9EWTU
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-6224 Rev.9 P. 13 / 21
■DEVICE STATUS
ADDR. WORD PARAMETER
9537 1 Ch. 1 and Ch. 2 System error
Bit assignment as shown below.
15Bit 14 13 12 11 10 9876543210
STAT AVG ENE SET FDT PRG
PRG : Control software error
FDT : Factory calibration data error
SET : User setting data error
ENE : Energy data error
AVG : Average data error
STAT : Maximum / minimum data error
‘1’ is placed when the respective errors are detected. All measuring operations stop while one or more sys-
tem errors are detected.
9538 1 Ch. 3 and Ch. 4 System error
Same as with the address 9537
: : :
9544 1 Ch. 15 and Ch. 16 System error
Same as with the address 9537
Ch. 9 through 16 are valid only when the R9WTU-EP8 is used.
9545 1 Ch. 1 Input overload
Bit assignment as shown below.
15Bit 14 13 12 11 10 9876543210
U31F U23 U12 U3N U2N U1N I3 I2 I1
F : Frequency
I1 : Line 1 current
I2 : Line 2 current
I3 : Line 3 current
U1N : Phase 1 voltage
U2N : Phase 2 voltage
U3N : Phase 3 voltage
U12 : Line 1 - 2 voltage
U23 : Line 2 - 3 voltage
U31 : Line 3 - 1 voltage
‘1’ is placed at the bit where an overload is detected.
9546 1 Ch. 2 Input overload
Same as with the address 9545
: : :
9560 1 Ch. 16 Input overload
Same as with the address 9545
Ch. 9 through 16 are valid only when the R9WTU-EP8 is used.

R9EWTU
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-6224 Rev.9 P. 14 / 21
■DEVICE INFORMATION
ADDR. WORD PARAMETER
9601 1 Device ID
9901 : R9xWTU
9602 1 Device version
Version number × 100 (e.g. Version 1.00 = 100)
9603 4 Serial No.
Each character is stored in the following address:
Address Upper Byte Lower Byte
9603 2nd 1st
9604 4th 3rd
9605 6th 5th
9606 8th 7th
9607 8 Tag name
This register is writable.
Each character is stored in the following address:
Address Upper Byte Lower Byte
9607 2nd 1st
9608 4th 3rd
9609 6th 5th
9610 8th 7th
9611 10th 9th
9612 12th 11th
9613 14th 13th
9614 16th 15th
9623 1 Extension function flag
Reading the following values depending upon the function:
0002H : RS-485 (Modbus RTU)
0080H : LONWORKS
0100H : CC-Link
2000H : Modbus/TCP
9624 1 Number of discrete input
0 : None
8 : 8 points (with the R9WTU-ED16)
9625 1 Number of discrete output
0 : None
8 : 8 points (with the R9WTU-ED16)
9626 1 Reserved
9627 1 Number of circuits
8 : 8 circuits
16 : 16 circuits (with the R9WTU-EP8)
9628 1 Number of counters
0 : None
8 : 8 points (with the R9WTU-ED16)

R9EWTU
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-6224 Rev.9 P. 15 / 21
MODBUS - MAPPING
■PARAMETER TYPES
TYPE WORD UNIT RANGE
Current 2 mA 0 to 2 000 000 000 mA
Voltage 2 V/100 0 to 20 000 000.00 V
Active power 2 W -2 000 000 000 to 2 000 000 000 W
Reactive power 2 var -2 000 000 000 to 2 000 000 000 var
Apparent power 2 VA 0 to 2 000 000 000 VA
Power factor 2 cos φ-1.0000 to 1.0000
Frequency 2 Hz/100 0 or 40.00 to 70.00 Hz
Active energy 2 kWh/10 0 to 99 999 999.9 kWh *1
Reactive energy 2 kvarh/10 0 to 99 999 999.9 kvarh *1
Harmonic distortion 1 %/10 0 to 999.9 %
Date/time 3 --- Each value is in BCD format.
Year value represented in the offset from 2000.
e.g. 100817160752h = Year 2010, August 17, 16:07:52
b48 b40 b39 b32 b31 b24 b23 b16 b15 b8 b7 b0
Year Month Day Hour Minute Second
*1. Reset to 0 at overflow
■ADDRESS
If base address and offset is given separately in the following tables, add both values to determine the address for a particular
parameter.
[Example]
Ch. 1, Line 1 current, Present value = 65 + 0 = 65
Ch. 1, Line 1 current, Max. value = 65 + 10 = 75
• Voltage and Frequency
PARAMETER PRESENT MAX MIN
Delta voltage, 1 – 2 1 17 33
Delta voltage, 2 – 3 3 19 35
Delta voltage, 3 – 1 5 21 37
Phase voltage, Phase 1 7 23 39
Phase voltage, Phase 2 9 25 41
Phase voltage, Phase 3 11 27 43
Total voltage *213 29 45
Frequency 15 31 47
*2. Total voltage
Single-phase/2-wire: Phase 1 voltage
Single-phase/3-wire: (Phase 1 + 3) / 2
Three-phase/3-wire: {Delta (1 – 2) + (2 – 3) + (3 – 1)} / 3
• Current
PARAMETER BASE ADDRESS
BASIC UNIT
Ch. 1 Current 65
Ch. 2 Current 97
Ch. 3 Current 129
Ch. 4 Current 161
Ch. 5 Current 193
Ch. 6 Current 225
Ch. 7 Current 257
Ch. 8 Current 289
R9WTU-EP8
Ch. 9 Current 321
Ch. 10 Current 353
Ch. 11 Current 385
Ch. 12 Current 417
Ch. 13 Current 449
Ch. 14 Current 481
Ch. 15 Current 513
Ch. 16 Current 545
PARAMETER OFFSET
PRESENT MAX MIN
Current, Line 1 +0 +10 +20
Current, Line 2 +2 +12 +22
Current, Line 3 +4 +14 +24
Neutral current +6 +16 +26
Total current *3+8 +18 +28
*3. Total current
Single-phase/2-wire: Line 1 current
Single-phase/3-wire: (Line 1 + 3) / 2
Three-phase/3-wire: (Line 1 + 2 + 3) / 3

R9EWTU
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-6224 Rev.9 P. 16 / 21
• Power and Power Factor
PARAMETER BASE ADDRESS
BASIC UNIT
Ch. 1 Power, Power factor 577
Ch. 2 Power, Power factor 673
Ch. 3 Power, Power factor 769
Ch. 4 Power, Power factor 865
Ch. 5 Power, Power factor 961
Ch. 6 Power, Power factor 1057
Ch. 7 Power, Power factor 1153
Ch. 8 Power, Power factor 1249
R9WTU-EP8
Ch. 9 Power, Power factor 1345
Ch. 10 Power, Power factor 1441
Ch. 11 Power, Power factor 1537
Ch. 12 Power, Power factor 1633
Ch. 13 Power, Power factor 1729
Ch. 14 Power, Power factor 1825
Ch. 15 Power, Power factor 1921
Ch. 16 Power, Power factor 2017
PARAMETER OFFSET
PRESENT MAX MIN
Active power, Phase 1 +0 +32 +64
Active power, Phase 2 +2 +34 +66
Active power, Phase 3 +4 +36 +68
Active power +6 +38 +70
Reactive power, Phase 1 +8 +40 +72
Reactive power, Phase 2 +10 +42 +74
Reactive power, Phase 3 +12 +44 +76
Reactive power +14 +46 +78
Apparent power, Phase 1 +16 +48 +80
Apparent power, Phase 2 +18 +50 +82
Apparent power, Phase 3 +20 +52 +84
Apparent power +22 +54 +86
Power factor, Phase 1 +24 +56 +88
Power factor, Phase 2 +26 +58 +90
Power factor, Phase 3 +28 +60 +92
Power factor +30 +62 +94
• Average (demand) (AVG)
PARAMETER BASE ADDRESS
BASIC UNIT
Ch. 1 Average 2113
Ch. 2 Average 2257
Ch. 3 Average 2401
Ch. 4 Average 2545
Ch. 5 Average 2689
Ch. 6 Average 2833
Ch. 7 Average 2977
Ch. 8 Average 3121
R9WTU-EP8
Ch. 9 Average 3265
Ch. 10 Average 3409
Ch. 11 Average 3553
Ch. 12 Average 3697
Ch. 13 Average 3841
Ch. 14 Average 3985
Ch. 15 Average 4129
Ch. 16 Average 4273
PARAMETER
OFFSET
LATEST MAX
MAX
DATE/
TIME
MIN
MIN
DATE/
TIME
Current AVG date/time +0
Current AVG +3 +28 +30 +83 +85
Current AVG, Line 1 +5 +33 +35 +88 +90
Current AVG, Line 2 +7 +38 +40 +93 +95
Current AVG, Line 3 +9 +43 +45 +98 +100
Neutral current AVG +11 +48 +50 +103 +105
Power AVG date/time +13
Active power AVG +16 +53 +55 +108 +110
Reactive power AVG +18 +58 +60 +113 +115
Apparent power AVG +20 +63 +65 +118 +120

R9EWTU
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-6224 Rev.9 P. 17 / 21
• Energy / Pulse Count
PARAMETER BASE ADDRESS
BASIC UNIT
Ch. 1 Energy 4417
Ch. 2 Energy 4481
Ch. 3 Energy 4673
Ch. 4 Energy 4737
Ch. 5 Energy 4929
Ch. 6 Energy 4993
Ch. 7 Energy 5185
Ch. 8 Energy 5249
EXTENSION UNIT
R9WTU-EP8 R9WTU-ED16 BASE ADDRESS
Ch. 9 Energy DI 1 Pulse count 5441
Ch. 10 Energy DI 2 Pulse count 5505
Ch. 11 Energy DI 3 Pulse count 5697
Ch. 12 Energy DI 4 Pulse count 5761
Ch. 13 Energy DI 5 Pulse count 5953
Ch. 14 Energy DI 6 Pulse count 6017
Ch. 15 Energy DI 7 Pulse count 6209
Ch. 16 Energy DI 8 Pulse count 6273
PARAMETER
OFFSET
BASIC UNIT
R9WTU-EP8 R9WTU-ED16
Totalized energy Totalized pulse count +0
Totalized reactive
energy (LAG)
Reserved +2
Energy, last 1 hour Pulse count, last 1 hour +6
Energy, last 1 minute
Pulse count, last 1 minute +8
Energy, 0 to 1
(o’clock)
Pulse count, 0 to 1
(o’clock)
+10
Energy, 1 to 2 Pulse count, 1 to 2 +12
Energy, 2 to 3 Pulse count, 2 to 3 +14
Energy, 3 to 4 Pulse count, 3 to 4 +16
Energy, 4 to 5 Pulse count, 4 to 5 +18
Energy, 5 to 6 Pulse count, 5 to 6 +20
Energy, 6 to 7 Pulse count, 6 to 7 +22
Energy, 7 to 8 Pulse count, 7 to 8 +24
Energy, 8 to 9 Pulse count, 8 to 9 +26
Energy, 9 to 10 Pulse count, 9 to 10 +28
Energy, 10 to 11 Pulse count, 10 to 11 +30
Energy, 11 to 12 Pulse count, 11 to 12 +32
Energy, 12 to 13 Pulse count, 12 to 13 +34
Energy, 13 to 14 Pulse count, 13 to 14 +36
Energy, 14 to 15 Pulse count, 14 to 15 +38
Energy, 15 to 16 Pulse count, 15 to 16 +40
Energy, 16 to 17 Pulse count, 16 to 17 +42
Energy, 17 to 18 Pulse count, 17 to 18 +44
Energy, 18 to 19 Pulse count, 18 to 19 +46
Energy, 19 to 20 Pulse count, 19 to 20 +48
Energy, 20 to 21 Pulse count, 20 to 21 +50
Energy, 21 to 22 Pulse count, 21 to 22 +5
Energy, 22 to 23 Pulse count, 22 to 23 +54
Energy, 23 to 24 Pulse count, 23 to 24 +56
Max. energy Max. pulse count +58
Max. energy data/time
Max. pulse count date/time +60
• Voltage Harmonic Distortion (HD)
PARAMETER PRESENT MAX
Delta voltage HD, 1 – 2 6465 6473
Delta voltage HD, 2 – 3 6466 6474
Delta voltage HD, 3 – 1 6467 6475
Phase voltage HD, Phase 1 6468 6476
Phase voltage HD, Phase 2 6469 6477
Phase voltage HD, Phase 3 6470 6478
• Current Harmonic Distortion (HD)
PARAMETER BASE ADDRESS
BASIC UNIT
Ch. 1 Current HD 6481
Ch. 2 Current HD 6489
Ch. 3 Current HD 6497
Ch. 4 Current HD 6505
Ch. 5 Current HD 6513
Ch. 6 Current HD 6521
Ch. 7 Current HD 6529
Ch. 8 Current HD 6537
R9WTU-EP8
Ch. 9 Current HD 6545
Ch. 10 Current HD 6553
Ch. 11 Current HD 6561
Ch. 12 Current HD 6569
Ch. 13 Current HD 6577
Ch. 14 Current HD 6585
Ch. 15 Current HD 6593
Ch. 16 Current HD 6601
PARAMETER OFFSET
PRESENT MAX
Current HD, Line 1 +0 +4
Current HD, Line 2 +1 +5
Current HD, Line 3 +2 +6
Neutral current HD +3 +7

R9EWTU
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-6224 Rev.9 P. 18 / 21
• Voltage Harmonic Content (HC)
PARAMETER 3rd 5th ... 29th 31st
Delta voltage HC, 1 – 2 6609 6610 ... 6622 6623
Delta voltage HC, 2 – 3 6625 6626 ... 6638 6639
Delta voltage HC, 3 – 1 6641 6642 ... 6654 6655
Phase voltage HC, Phase 1 6657 6658 ... 6670 6671
Phase voltage HC, Phase 2 6673 6674 ... 6686 6687
Phase voltage HC, Phase 3 6689 6690 ... 6702 6703
• Current Harmonic Content (HC)
PARAMETER BASE ADDRESS
BASIC UNIT
Ch. 1 Current HC 6705
Ch. 2 Current HC 6769
Ch. 3 Current HC 6833
Ch. 4 Current HC 6897
Ch. 5 Current HC 6961
Ch. 6 Current HC 7025
Ch. 7 Current HC 7089
Ch. 8 Current HC 7153
R9WTU-EP8
Ch. 9 Current HC 7217
Ch. 10 Current HC 7281
Ch. 11 Current HC 7345
Ch. 12 Current HC 7409
Ch. 13 Current HC 7473
Ch. 14 Current HC 7537
Ch. 15 Current HC 7601
Ch. 16 Current HC 7665
PARAMETER OFFSET
3rd 5th ... 29th 31st
Current HC, Line 1 +0 +1 ... +13 +14
Current HC, Line 2 +16 +17 ... +29 +30
Current HC, Line 3 +32 +33 ... +45 +46
Neutral current HC +48 +49 ... +61 +62
• Discrete Input (DI)
‘0’ is read if the R9WTU-ED16 is not used.
ADDR. WORD LENGTH PARAMETER
7745 1 DI 1 Status
0 : OFF
1 : ON
7746 1 DI 2 Status
0 : OFF
1 : ON
7747 1 DI 3 Status
0 : OFF
1 : ON
7748 1 DI 4 Status
0 : OFF
1 : ON
7749 1 DI 5 Status
0 : OFF
1 : ON
7750 1 DI 6 Status
0 : OFF
1 : ON
7751 1 DI 7 Status
0 : OFF
1 : ON
7752 1 DI 8 status
0 : OFF
1 : ON

R9EWTU
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-6224 Rev.9 P. 19 / 21
• Pulse Count
‘0’ is read if the R9WTU-ED16 is not used.
ADDR. WORD LENGTH PARAMETER
7777 2 DI 1 Pulse count
Pulse train input at DI 1 is counted. The counter resets to 0 when a pulse is added at 999
999 999 counts.
7779 2 DI 2 Pulse count
Pulse train input at DI 2 is counted. The counter resets to 0 when a pulse is added at 999
999 999 counts.
7781 2 DI 3 Pulse count
Pulse train input at DI 3 is counted. The counter resets to 0 when a pulse is added at 999
999 999 counts.
7783 2 DI 4 Pulse count
Pulse train input at DI 4 is counted. The counter resets to 0 when a pulse is added at 999
999 999 counts.
7785 2 DI 5 Pulse count
Pulse train input at DI 5 is counted. The counter resets to 0 when a pulse is added at 999
999 999 counts.
7787 2 DI 6 Pulse count
Pulse train input at DI 6 is counted. The counter resets to 0 when a pulse is added at 999
999 999 counts.
7789 2 DI 7 Pulse count
Pulse train input at DI 7 is counted. The counter resets to 0 when a pulse is added at 999
999 999 counts.
7791 2 DI 8 Pulse count
Pulse train input at DI 8 is counted. The counter resets to 0 when a pulse is added at 999
999 999 counts.
• Discrete Output (DO)
‘Exception’ is given if the R9WTU-ED16 is not used.
ADDR. WORD LENGTH PARAMETER
7841 1 DO 1
Output contact at the Extension Unit is turned on/off by writing in the address.
0 : OFF / 1 : ON
7842 1 DO 2
Output contact at the Extension Unit is turned on/off by writing in the address.
0 : OFF / 1 : ON
7843 1 DO 3
Output contact at the Extension Unit is turned on/off by writing in the address.
0 : OFF / 1 : ON
7844 1 DO 4
Output contact at the Extension Unit is turned on/off by writing in the address.
0 : OFF / 1 : ON
7845 1 DO 5
Output contact at the Extension Unit is turned on/off by writing in the address.
0 : OFF / 1 : ON
7846 1 DO 6
Output contact at the Extension Unit is turned on/off by writing in the address.
0 : OFF / 1 : ON
7847 1 DO 7
Output contact at the Extension Unit is turned on/off by writing in the address.
0 : OFF / 1 : ON
7848 1 DO 8
Output contact at the Extension Unit is turned on/off by writing in the address.
0 : OFF / 1 : ON

R9EWTU
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-6224 Rev.9 P. 20 / 21
DATA LOGGING IN SD CARD
■GENERAL DESCRIPTION
The R9EWTU is equipped with a SD card slot.
The unit transfers to the card at 0 minute every hour its in-
ternal memory data: energy per hour; and voltage, current,
power and energy per minute.
A 4-GB SD card can store information of 8 channels for ap-
prox. 16 years.
■TIMING
Data recording is started from 0 minute of the hour when
the card is inserted.
For example, if it is inserted at 9:50, data from 9:00 to 10:00
is transferred to the card at 10:00, and later data is added
every hour until the card is extracted. (If the unit has been
started later than 9:00, data before the startup is not avail-
able.)
If the card is not in the unit on the hour, data transfer is not
executed and the internal data is automatically erased until
one is inserted to the unit again.
The SDCard LED starts blinking 30 seconds before the
hour every hour for noticing start of writing operation.
DO NOT extract the card while the LED is blinking until
the writing is complete.
If the card is extracted or the power supply to the unit is
turned off while it is writing, stored data may be destroyed
and inaccessible.
■SD CARD
Prepare one of the following types of memory card:
• Manufacturer: Hagiwara Solutions
Model: NSD6-004GH(A00SDI (discontinued),
NSDA-004GT (discontinued),
NSDA-004GL (discontinued),
NSD6-004GH(B21SEI
• Manufacturer: Apacer Technology
Model: AP-ISD04GIS4B-T, AP-ISD04GIS4B-3T
M-SYSTEM IS NOT LIABLE FOR ANY LOSS OF DATA.
Data may be lost in but not limited to the following cases:
• Wrong handling of the card
• Static or electric noise interference
• When the card is extracted or when the power supply to
the unit is turned off while it is accessed.
• When formatting SD card, use a dedicated software “SD
Card Formatter”.
“SD Card Formatter” is downloadable at SD Association’s
web site.
https://www.sdcard.org
■CALENDAR
The incorporated calendar IC is backed up with a battery
which enables the calendar backup for 2 years with no ex-
ternal power supply.
We recommend that the power supply is maintained as long
as possible while the SD card is used.
The battery does not wear while the external power is sup-
plied, however, the calendar cannot be backed up after the
total elapsed time without power supply exceeds 2 years.
The unit indicates a calendar error with POWER LED, and
resets the date and time to Year 2000, January 1, 00:00:00.
Refer to “COMPONENT IDENTIFICATION” section. Set
the date and time again in such a case.
Once the backup battery life is expired, the unit indicates
the same error every time the power supply to it is turned
on.
■DIRECTORY
XXXXXXXX
Device
201004 201004.csv
201005
Month
Month
20100401.csv
20100430.csv
Log file, 1 hour interval
Log file, 1 minute interval
Log file, 1 minute interval
・
・
・
• Device Folder
A data folder inherent to the device is automatically cre-
ated, and monthly folders are created in it.
Device folder is identified with the device’s serial number
(8 characters).
• Monthly Folder
Monthly folders are identified with year (4 characters) and
month (2 characters). All log files for the designated month
are stored in it.