LS ELECTRIC SV-iS7 Series User manual

LS ELECTRIC strives to maximize your profits in gratitude for choosing us as your partner.
IS7 RAPIEnet+ Option Module
SV-iS7 Series
[ RAPIEnet, EtherNet/IP, Modbus TCP Protocol ]

iS7 RAPIEnet+ Option Manual
1
Before using the product
Thank you for purchasing the iS7 RAPIEnet+ communication board.
SAFETY PRECAUTIONS
Always follow safety instructions to prevent accidents and potentially hazardous situations.
Safety precautions are classified into “WARNING” and “CAUTION,” and their meanings are as follows:
WARNING
CAUTION
Symbols used in this document and on the product indicate the following.
Read and follow the instructions carefully to avoid dangerous situations.
Presence of "dangerous voltage" inside the product that may cause harm or electric shock.
Keep the operating instructions handy for quick reference.
Read the operating instructions carefully to fully understand the functions of the SV-iS7 series inverters
and use them properly.
CAUTION
Be careful not to damage the CMOS elements on the communication board.
Static charge may cause malfunctioning of the product.
Turn off the inverter before connecting communication cables.
Otherwise, the module may be damaged or a communication error may result.
Correctly align the communication board to the installation connector for installation and
ensure that it is firmly connected to the inverter.
Otherwise, the module may be damaged or a communication error may result.
Check the parameter units when configuring the parameter values.
Otherwise, a communication error may occur.
Indicates a potentially hazardous situation which, if not avoided,
may cause death or serious injury.
Indicates a potentially hazardous situation, which, if not
avoided, may cause minor injury or damage to the product.

iS7 RAPIEnet+ Option Manual
2
Table of Contents
1. Overview...............................................................................................................................................5
2. RAPIEnet+ technical specifications....................................................................................................5
3. Package components..........................................................................................................................6
4. Device type for the iS7 RAPIEnet+ communication board................................................................6
5. iS7 RAPIEnet+ communication board layout and installation..........................................................6
(1) External layout............................................................................................................................................ 6
(2) Installing the iS7 RAPIEnet+ communication board............................................................................... 7
6. Network connection.............................................................................................................................8
(1) Network connection cable wiring ............................................................................................................. 8
(2) Communication cable connector.............................................................................................................. 8
7. Network cable specifications..............................................................................................................9
(1)Frequency band.......................................................................................................................................... 9
(2) Twisted pair cable types............................................................................................................................ 9

iS7 RAPIEnet+ Option Manual
3
8. Inverter communication address......................................................................................................10
9. Keypad parameters for RAPIEnet+ communication board.............................................................11
10. Description of keypad parameters related to RAPIEnet+ communication board........................14
(1) Description of keypad parameters (simplified) ..................................................................................... 14
(2) CNF group ................................................................................................................................................. 16
(3) DRV group................................................................................................................................................. 16
(4) COM group ................................................................................................................................................ 16
(5) PRT group (Lost Command).................................................................................................................... 20
11. Service when connected with our products ..................................................................................21
11.1 Overview...................................................................................................................................................... 21
11.2 Smart scaling (LS ELECTRIC master module: XGL-EFMxB V8.0 or later)............................................ 21
(1) Configuring the XG5000 program for the PLC ...................................................................................... 23
(2) Configuring the master module .............................................................................................................. 24
(3) Network device settings .......................................................................................................................... 24
(4) Input/Output parameter settings............................................................................................................. 25
(5) Diagnostic parameter settings................................................................................................................ 25
(6) Network device connections................................................................................................................... 26
(7)Service status ........................................................................................................................................... 26
11.3 LED indications and troubleshooting....................................................................................................... 29

iS7 RAPIEnet+ Option Manual
4
12. Services with LS ELECTRIC products or other manufacturer’s products...................................31
12.1 Overview...................................................................................................................................................... 31
12.2 EtherNet/IP................................................................................................................................................... 31
(1) Basic protocol structure.......................................................................................................................... 31
(2) Implicit message....................................................................................................................................... 32
(3) Explicit messages..................................................................................................................................... 38
(4) Supported objects .................................................................................................................................... 38
12.3 Modbus TCP frame ..................................................................................................................................... 46
(1) Modbus TCP frame structure .................................................................................................................. 46
(2) Function codes ......................................................................................................................................... 47
(3) Exception (Except) frame ........................................................................................................................ 49
12.4 LED indications and troubleshooting....................................................................................................... 51

iS7 RAPIEnet+ Option Manual
5
1. Overview
The RAPIEnet+ communication board allows the SV-iS7 inverter to connect to an Ethernet or RAPIEnet
network that is compliant with international standards, Type 21 of IEC 61158 and RRP of IEC 62439. The
RAPIEnet+ communication board supports three protocols: RAPIEnet, EtherNet/IP, and Modbus TCP.
By utilizing the 100 Mbps auto negotiation feature, the RAPIEnet+ communication board provides real-
time network communication without collisions and allows for controlling and monitoring of the inverter via
PLC sequence programs or a Profibus master module.
With simple network cable wiring, installation times can be reduced and maintenance becomes easier.
(When accessing a RAPIEnet v2.0 network with XG5000, LS ELECTRIC network master module XGL-
EFMxB V8.0 or later is required.)
** You can download the user manual (“Manual_XGT_FEnet”) at: http://www.lselectric.co.kr/
Note) What is “RAPIEnet+”?
RAPIEnet+ is a hybrid networking solution that incorporates RAPIEnet, LS ELECTRIC’s real-time industrial
Ethernet based on international standards, with highly compatible Modbus TCP and EtherNet/IP network
technologies. This highly efficient industrial Ethernet by LS ELECTRIC allows for integration of various future
technologies required for factory automation, such as the IoT.
2. RAPIEnet+ technical specifications
Items
Description
Communication Protocol
RAPIEnet, EtherNet/IP, Modbus TCP
Communication speed
100 Mbps
Communication type
Auto negotiation
Communication range
100 m (twisted pair)
Service
Smart scaling
Up to 8 words
Max. number of stations
64 stations
Topology
Line/Ring topology
Communication range
100 m (twisted pair)
Recommended cable
UTP, FTP, STP
* The iS7 RAPIEnet+ communication board supports all the features of the iS7 Ethernet communication board.

iS7 RAPIEnet+ Option Manual
6
3. Package components
The product package contains: RAPIEnet+ communication board (1 ea), fix screws (2 ea), and
RAPIEnet+ communication board User Manual.
4. Device type for the iS7 RAPIEnet+ communication board
Device type: CENT
5. iS7 RAPIEnet+ communication board layout and installation
(1) External layout

iS7 RAPIEnet+ Option Manual
7
(2) Installing the iS7 RAPIEnet+ communication board
①Remove the front cover from the iS7 inverter.
②Install the RAPIEnet+ communication board to the installation connector on the iS7 inverter, then install the
fixing screws (2 ea).
③The RAPIEnet+ communication board has been installed on the iS7 Inverter.
Do not install or remove the RAPIEnet+ communication board to or from the iS7 inverter while the inverter is
turned on.
Ensure that the electric charge in the capacitors inside the inverter is completely discharged before installing
or uninstalling the RAPIEnet+ communication board.
Correctly align the communication board to the installation connector for installation and ensure that it is
firmly connected to the inverter.

iS7 RAPIEnet+ Option Manual
8
6. Network connection
(1) Network connection cable wiring
(2) Communication cable connector
** The cables connected to pin 1 and pin 2 must be twisted in a pair.
** The cables connected to pin 3 and pin 6 must be twisted in a pair.
Pin no.
Signal
Description
Cable color
1
TX+
Data transmission (+)
White/Yellow
2
TX-
Data transmission (-)
Yellow
3
RX+
Data reception (+)
White/Green
4
NONE
Not used
Blue
5
NONE
Not used
White/Blue
6
RX-
Data reception (-)
Green
7
NONE
Not used
White/Brown
8
NONE
Not used
Brown
1
8
1
2
3
4
5
6
7
8

iS7 RAPIEnet+ Option Manual
9
7. Network cable specifications
(1) Frequency band
There are five types of UTP cable specifications according to different applications, from category 1
through category 5. Category 5 network cables are required for utilizing the RAPIEnet+ communication
board.
Category 5 network cables support a frequency band up to 100 MHz, with up to 60 MHz channel
performance and up to 100 Mbps data transmission speed.
(2) Twisted pair cable types
Category
Description
Specifications/Usage
UTP (U.UTP)
Unshielded Twisted Pair cable for
high speed signals
200 MHz max.
Voice + Data + Low quality video signals
FTP (S.UTP)
Single insulation for the cable
core
* Insulation material: AL/Plastic complex foil
or copper braid
100 MHz max.
Protection against EMI, electrically stable
Voice + Data + Low quality video signals
STP (S.STP)
Dual insulation for the cable pair
and the cable core
* Material for cable pair insulation: AL/Plastic
complex foil * Material for cable core:
AL/Plastic complex foil or copper braid
500MHz max.
Voice + Data +
Video signals
Replaces 75Ω coaxial cable

iS7 RAPIEnet+ Option Manual
10
8. Inverter communication address
Refer to “Chapter 11. Communication features” of the “iS7 Complete User Manual in EnglishUser Manual”
for details.
** You can download the “iS7 User Manual” at: http://www.lselectric.co.kr/

iS7 RAPIEnet+ Option Manual
11
9. Keypad parameters for RAPIEnet+ communication board
The following table lists the inverter parameters related to RAPIEnet, EtherNet/IP, and Modbus TCP
communication features. Application types for each parameter is specified in the “Protocol” column: R
(RAPIEnet), E (EtherNet/IP), or M (Modbus TCP).
Set DRV-06 (Cmd Source) to “4 (Fieldbus)” using the keypad to operate the iS7 inverter via the
RAPIEnet+ communication board.
Set DRV-07 (Frq Ref Src) to “8 (Fieldbus)” using the keypad to provide frequency reference via the
RAPIEnet+ communication board.
Keypad parameters related to iS7 RAPIEnet+ communication board
Code No.
Parameter Name
Initial
Value
Range
Description
Protocol
CNF-30
Option-1 Type
-
-
Indicates the name of the communication
board installed. ‘RAPIEnet+’
(Depending on the inverter version,
“Reserved-18” may be displayed instead of
“RAPIEnet+.”)
R/E/M
DRV-06
Cmd Source
1
0 –5
4: Set to “Field Bus.”
R/E/M
DRV-07
Freq Ref Src
0
0 –11
8: Set to “Field Bus.”
R/E/M
COM-06
FBus S/W Ver
-
-
Indicates the version of the communication
board installed.
R/E/M
COM-07
FBus ID
1
0 –63
Set the station number of the RAPIEnet+
communication board.
R/E
COM-09
FBus Led
Displays the on/off status of the LED
indicators on the RAPIEnet+ communication
board.
R/E/M
COM-10
Opt Parameter1
0
0 –255
Sets the IP address.
* To connect to the network via the RAPIEnet
protocol after setting COM-25 to “2
(RAPIEnet Enable),” set COM-13 to “100 +
COM-07.”
R/E/M
COM-11
Opt Parameter2
0
0 –255
COM-12
Opt Parameter3
0
0 –255
COM-13
Opt Parameter4
0
0 –255
COM-14
Opt Parameter5
0
0 –255
Set the subnet mask.
R/E/M
COM-15
Opt Parameter6
0
0 –255
COM-16
Opt Parameter7
0
0 –255
COM-17
Opt Parameter8
0
0 –255
COM-18
Opt Parameter9
0
0 –255
Sets the Gateway address.
R/E/M
COM-19
Opt Parameter 10
0
0 –255
COM-20
Opt Parameter 11
0
0 –255
COM-21
Opt Parameter 12
0
0 –255
COM-22
Opt Parameter 13
0
0
Set the network communication speed. (fixed
to 100 Mbps Auto)
R/E/M
COM-23
Opt Parameter 14
0
0 –11
CIP Input Instance
R/E
COM-24
Opt Parameter 15
0
0 –11
CIP Output Instance
R/E
COM-25
Opt Parameter 16
0
0 –2
2: RAPIEnet Enable
0: RAPIEnet Disable
R/E
Note) After making changes to parameter COM-07 and parameters COM-10 –25, you must set COM-94 (Comm-
Update) to “1 (Yes)” to save the changes. (If COM-94 [Comm-Update] has not been set after making the parameter
changes, the LED indicator will flash in red at 2-second intervals to warn the user.)

iS7 RAPIEnet+ Option Manual
12
Keypad parameters related to iS7 RAPIEnet+ communication board
Code No.
Parameter Name
Initial
Value
Range
Description
Protocol
COM-30
Para Status Num
8
0–8
Automatically set according to the CIP Input
Instance.
R/E
COM-31
Para Status-1
000A
0x0000
-0xFFFF
Sets up the inverter data address to be read
by the client. (Hex.)
R/E
COM-32
Para Status-2
000E
0x0000
-0xFFFF
Sets up the inverter data address to be read
by the client. (Hex.)
R/E
COM-33
Para Status-3
000F
0x0000
-0xFFFF
Sets up the inverter data address to be read
by the client. (Hex.)
R/E
COM-34
Para Status-4
-
0x0000
-0xFFFF
Sets up the inverter data address to be read
by the client. (Hex.)
R/E
COM-35
Para Status-5
-
0x0000
-0xFFFF
Sets up the inverter data address to be read
by the client. (Hex.)
R/E
COM-36
Para Status-6
-
0x0000
-0xFFFF
Sets up the inverter data address to be read
by the client. (Hex.)
R/E
COM-37
Para Status-7
-
0x0000
-0xFFFF
Sets up the inverter data address to be read
by the client. (Hex.)
R/E
COM-38
Para Status-8
-
0x0000
-0xFFFF
Sets up the inverter data address to be read
by the client. (Hex.)
R/E
COM-50
Para Ctrl Num
8
0–8
Automatically set according to the CIP Output
Instance.
R/E
COM-51
Para Control-1
0005
0x0000
-0xFFFF
Sets up the client’s command address. (Hex.)
R/E
COM-52
Para Control-2
0006
0x0000
-0xFFFF
Sets up the client’s command address. (Hex.)
R/E
COM-53
Para Control-3
-
0x0000
-0xFFFF
Sets up the client’s command address. (Hex.)
R/E
COM-54
Para Control-4
-
0x0000
-0xFFFF
Sets up the client’s command address. (Hex.)
R/E
COM-55
Para Control-5
-
0x0000
-0xFFFF
Sets up the client’s command address. (Hex.)
R/E
COM-56
Para Control-6
-
0x0000
-0xFFFF
Sets up the client’s command address. (Hex.)
R/E
COM-57
Para Control-7
-
0x0000
-0xFFFF
Sets up the client’s command address. (Hex.)
R/E
COM-58
Para Control-8
-
0x0000
-0xFFFF
Sets up the client’s command address. (Hex.)
R/E
COM-94
Comm Update
0
0: NO
1: YES
Update keypad parameters related to network
communication.
R/E/M
PRT-12
Lost Cmd Mode
None
0: None
1: Free-Run
2: Dec
3: Hold Input
4: Hold
Output
5: Lost
Preset
Set the inverter operation for when a Lost
Command has occurred. (Note1)
R/E/M
PRT-13
Lost Cmd Time
1.0
0.1–120
Lost Command trigger time
R/E/M
PRT-14
Lost Preset F
0.00
0.05 –60.00
Sets the Lost Preset speed
R/E/M
(Note1) Lost Command Mode

iS7 RAPIEnet+ Option Manual
13
Set value
Function
"None"
Maintains the previous status.
"Free-Run"
Lost Command Trip occurs and a free run stop is made.
"Dec"
Lost Command Trip occurs and a deceleration stop is made.
"Hold Input"
Lost Command Warning occurs and the inverter operates with the previous speed reference.
"Hold Output"
Lost Command Warning occurs and the inverter operates with the previous running speed.
"Lost Preset"
Lost Command Warning occurs and the inverter operates with speed reference set at PRT-14.

iS7 RAPIEnet+ Option Manual
14
10. Description of keypad parameters related to RAPIEnet+ communication board
(1) Description of keypad parameters (simplified)
The following table lists the simplified information of keypad parameters. The detailed information is provided
in the parameter group section.
Code
Parameter Name
Description
CNF
30 Option-1 Type
Displays the option slot-1 type
DRV
06 Cmd Source
Command Source
07 Freq Ref Src
Frequency setting
COM
06 FBus S/W Ver
Communication option S/W version
07 FBus ID
Station ID of the communication board (communication board ID)
09 FBus Led
Information about LED indicators on the communication board
10 opt para-1
Enter the 1st decimal number of the IP address.
11 opt para-2
Enter the 2nd decimal number of the IP address.
12 opt para-3
Enter the 3rd decimal number of the IP address.
13 opt para-4
Enter the 4th decimal number of the IP address.
14 opt para-5
Enter the 1st decimal number of the subnet address.
15 opt para-6
Enter the 2nd decimal number of the subnet address.
16 opt para-7
Enter the 3rd decimal number of the subnet address.
17 opt para-8
Enter the 4th decimal number of the subnet address.
18 opt para-9
Enter the 1st decimal number of the gateway address.
19 opt para-10
Enter the 2nd decimal number of the gateway address.
20 opt para-11
Enter the 3rd decimal number of the gateway address.
21 opt para-12
Enter the 4th decimal number of the gateway address.
22 opt para-13
Network communication speed
(0 fixed, automatically set to 100 Mbps)
23 opt para-14
RAPIEnet: Set the Input Parameter Size
EtherNet/IP: Set the Input Instance
24 opt para-15
RAPIEnet: Set Output Parameter Size
EtherNet/IP: Set Output Instance
25 opt para-16
Enable or disable RAPIEnet
2: Enable RAPIEnet
0: RAPIEnet Disable
30 ParaStatus Num
Displays the number of transmitted data
31 Para Status-1
Set address 1 for storing the transmitted data.

iS7 RAPIEnet+ Option Manual
15
Code
Parameter Name
Description
32 Para Status-2
Set address 2 for storing the transmitted data.
33 Para Status-3
Set address 3 for storing the transmitted data.
34 Para Status-4
Set address 4 for storing the transmitted data.
35 Para Status-5
Set address 5 for storing the transmitted data.
36 Para Status-6
Set address 6 for storing the transmitted data.
37 Para Status-7
Set address 7 for storing the transmitted data.
38 Para Status-8
Set address 8 for storing the transmitted data.
50 Para Ctrl Num
Displays the number of received data
51 Para Control-1
Set address 1 for storing the received data.
52 Para Control-2
Set address 2 for storing the received data.
53 Para Control-3
Set address 3 for storing the received data.
54 Para Control-4
Set address 4 for storing the received data.
55 Para Control-5
Set address 5 for storing the received data.
56 Para Control-6
Set address 6 for storing the received data.
57 Para Control-7
Set address 7 for storing the received data.
58 Para Control-8
Set address 8 for storing the received data.
94 Comm Update
Reflect the network parameter changes.
PRT
12 Lost Cmd Mode
Select operation mode for a lost command.
13 Lost Cmd Time
Set the decision time for a lost command.
14 Lost Preset F
Set the start frequency for a lost command.

iS7 RAPIEnet+ Option Manual
16
(2) CNF group
①[CNF-30] Option-1 Type: Displays the option slot-1 type
Automatically displays the type of currently installed communication board. “RAPIEnet+” is
automatically displayed when the RAPIEnet+ communication board has been installed to the iS7
inverter.
** Depending on the inverter version, “Reserved-18” may be displayed instead of “RAPIEnet+.”
(3) DRV group
②[DRV-06] Cmd Source: Command Source
Select the command source for the iS7 inverter. Set to “4 (Field Bus)" to set the RAPIEnet+
communication board as the command source and provide commands via network.
③[DRV-07] Freq Ref Src: Frequency setting
Select the frequency command source for the iS7 inverter. Set to “8 (Field Bus)" to set the
RAPIEnet+ communication board as the frequency command source and provide frequency
commands via network.
(4) COM group
①[COM-06] FBus S/W Ver: Communication option S/W version
Automatically indicates the version of the communication board installed to the iS7 inverter.
②[COM-07] FBus ID: Station ID of the communication board (communication board ID)
R: Set the station ID for the iS7 RAPIEnet+ communication board. A total of 64 station IDs are
available from 0 to 63. (The station ID must be set before you can configure network communication
using the RAPIEnet protocol.)
When setting the station ID, be careful not to use a station ID that is not already occupied by the
PLC system or other network devices.
After making setting changes, you must set COM-94 (Comm Update) to “1 (Yes)” before the
changes can take effect.
③[COM-09] FBus Led: Information about LED indicators on the communication board
Displays on the Keypad the status of the LED indicators on the iS7 RAPIEnet+ communication
board. Refer to sections "11.3/12.4 LED indications and troubleshooting."

iS7 RAPIEnet+ Option Manual
17
Example of the COM-09 (FBus LED) indication
09 FBus LED
④[COM-22] opt para-13: Set the network communication speed. (100 Mbps, Auto Negotiation)
The Ethernet speed parameter is fixed at "0" by default for 100 Mbps communication speed.
⑤[COM-23] opt para-14: Transmission data setting
Used to monitor one of the smart scaling transmission data of the iS7 RAPIEnet+ communication
board. You can select one of the data transmission addresses from COM31 to COM38 for
monitoring.
You can set “opt para-14 (smart scaling transmission data index)” to between “0” and “11.” Refer to
the following table for the description of the “opt para-14” settings.
The “opt para-14 (smart scaling transmission data index)” setting cannot be written while the
inverter is operating. Stop inverter operation before making changes to the setting.
This parameter setting is also required for a service via EtherNet/IP protocol. It specifies the data
format of the inverter status to be transmitted to the client (originator) during an I/O communication
via a CIP (Common Industrial Protocol). Refer to the Assembly Object section of the EtherNet/IP.
LED0
LED1
LED2
LED3
LED is OFF
LED is ON
LED is ON
LED is ON
Set value
Input instance value (E)
Data size (R/E)
Number of parameters (R/E)
0
70
4
X
1
71
4
X
2
110
4
X
3
111
4
X

iS7 RAPIEnet+ Option Manual
18
⑥[COM-24] opt para-15: Reception data setting
Used to monitor one of the smart scaling reception data of the iS7 RAPIEnet+ communication board.
You can select one of the data reception addresses from COM51 to COM58 for monitoring.
You can set “opt para-15 (smart scaling reception data index)” to between “0” and “11.” The
description of the “opt para-15” settings are as follows.
The “opt para-15 (smart scaling reception data index)” setting cannot be written while the inverter is
operating. Stop inverter operation before making changes to the setting.
This parameter is also required for EtherNet/IP protocol service. It configures the format of the
command data transmitted to the inverter by the client (originator) during the I/O communication via
the CIP (Common Industrial Protocol). Refer to the Assembly Object section of the EtherNet/IP.
4
141
2
1
5
142
4
2
6
143
6
3
7
144
8
4
8
145
10
5
9
146
12
6
10
147
14
7
11
148
16
8
Set value
Output instance value (E)
Data size (R/E)
Number of parameters (R/E)
0
20
4
X
1
21
4
X
2
100
4
X
3
101
4
X
4
121
2
1
5
122
4
2
6
123
6
3
7
124
8
4
8
125
10
5
9
126
12
6
10
127
14
7
11
128
16
8

iS7 RAPIEnet+ Option Manual
19
⑦[COM-25] RAPIEnet Enable/Disable settings
This feature is compatible with LS ELECTRIC products (XGL-EFMxB V8.0 or later) for the
RAPIEnet v2 smart scaling service.
(2: RAPIEnet v2 Enable / 0: RAPIEnet v2 Disable)
** You can download the user manual (“Manual_XGT_FEnet”) at: http://www.lselectric.co.kr/
If you have installed the iS7 RAPIEnet+ communication board to an inverter made by another
manufacturer (to utilize it as an iS7 Ethernet communication board), set the parameter to “0,” then
run “Comm Update” to operate the inverter with the RAPIEnet feature disabled.
⑧[COM-30] ParaStatus Num: Number of transmission data
You can set COM-23 (opt para-14) to change the number of transmission data to between “0” and
“8.” The RAPIEnet+ communication board can transmit up to 8 pieces of data. You can configure
the address of the transmission data with parameters COM-31 through COM-38.
⑨[COM-31] Para Status1 –[COM38] Para Status8: Transmission data address settings
After setting the number of transmission data with COM-30, enter the matching number of data
addresses for the data to transmit to the client (originator) with parameters COM-31 through COM-
38.
This parameter setting is not required for Modbus TCP network communications.
⑩[COM-50] Para Ctrl Num: Number of reception data
You can set COM-50 (opt para-15) to change the number of reception data to between “0” and “8.”
The RAPIEnet+ communication board can receive up to 8 pieces of data. You can configure the
address for the received data with parameters COM-51 through COM-58.
⑪[COM-51] Para Control1 –[COM58] Para Control8: Reception data address settings
After setting the number of reception data with COM-50, enter the matching number of data
addresses for receiving command data from the client (originator) with parameters COM-51 through
COM-58.
This parameter setting is not required for Modbus TCP network communications.