Vigilohm IM400N and IM400THRN Insulation monitoring device – User manual PDF
7EN02-0423-03

Modbus registers table

The following table lists the Modbus registers that apply to your device.

System status registers

Address Register   R/W Unit Type Range Description
dec hex dec hex
100 64 101 65 R – Uint16 –

Product identifier

    • 17010 - IM400N

    • 17011 - IM400THRN
    114..115 72...73 115...116 73...74 R – Uint32 –

    Product state

    • Bit1 - Reserved

    • Bit2 - Auto test

    • Bit3 - Reserved

    • Bit4 - Safe state

    • Bit5 - Monitoring

    • Bit6 - Reserved

    • Bit7 - Product error

    • Bit8 - System error

    • Bit9 - Injection disabled

    • Bit10 - Reserved
    116 74 11722 75 R – Uint16 –

    Product error codes

    • 0XFFFF - No error

    • 0x0000 - Unknown error

    • 0x0DEF - Undefined model

    • 0xAF00 - Auto-test failure

    • 0xBE00 - Metering

    • 0xC0F1 - Configuration error

    • 0x5EFA - Sensor call problem

    • 0xD1A1 - Glued IO

    • 0xD1A2 - RAM

    • 0xD1A3 - EEPROM

    • 0xD1A4 - Relay

    • 0xD1A5 - Status input

    • 0xD1A6 - Flash

    • 0xD1A7 - SIL

    • 0xE000 - NMI interrupt

    • 0xE001 - Hard fault exception

    • 0xE002 - Memory fault exception

    • 0xE003 - Bus fault exception

    • 0xE004 - Usage fault exception

    • 0xE005 - Unexpected interrupt

    • 0xFAF5 - Unexpected interrupt
    120...139 78...8B 121...140 79...8C R – UTF8 – Product family
    140...159 8C...9F 141...160 8D...A0 R/W – UTF8 – Product name (User application name)
    160...179 A0...B3 161...180 A1...B4 R – UTF8 – Product code

    • IMDIM400N

    • IMDIM400THRN
    180...199 B4...C7 181...200 B5...C8 R – UF8 – Manufacturer: Schneider Electric
    208...219 D0...DB 209...220 D1...DC R – UF8 – ASCII serial number
    220 DC 221 DD R – Uint16 – Manufacturing unit identifier
    227...246 E3...F6 228...247 E4...F7 R – UTF8 – Product capability
    247...266 F7...10A 248...267 F8...10B R – UTF8 – Product model

    • IMDIM400N

    • IMDIM400THRN
    300...306 12C...132 301...307 12D...133 R – Uint16 – Date and time in 7 register format

    The following parameters correspond to each register:

    • 300 - Year

    • 301 - Month

    • 302 - Day

    • 303 - Hour

    • 304 - Minute

    • 305 - Second

    • 306 - Millisecond
    307...310 133...136 308...311 134...137 R/W – Uint16 – Date and time in TI081 format. See Date and time (TI081 format).
    320...324 140...149 321...325 141...145 R – Uint16 – Present firmware version

    • X represents the primary revision number, which is encoded in register 321

    • Y represents the secondary revision number, which is encoded in register 322

    • Z represents the quality revision number, which is encoded in register 323
    325...329 145...149 326...330 146...14A R – Uint16 – Previous firmware version

    • X represents the primary revision number, which is encoded in register 326

    • Y represents the secondary revision number, which is encoded in register 327

    • Z represents the quality revision number, which is encoded in register 328
    340...344 154...158 341...345 155...159 R – Uint16 – Boot firmware version

    • X represents the primary revision number, which is encoded in register 341

    • Y represents the secondary revision number, which is encoded in register 342

    • Z represents the quality revision number, which is encoded in register 343
    550...555 226...22B 551...556 227...22C R – UTF8 – Existing OS version
    556...561 22C...231 557...562 22D...232 R – UTF8 – Previous OS version
    562...567 232...237 563...572 233...23C R – UTF8 – Existing RS/Boot version

    Modbus

    Address Register   R/W Unit Type Range Description
    dec hex dec hex
    750 2EE 751 2EF R/W – Uint16 1...247

    Device address

    Default value: 1
    751 2EF 752 2F0 R/W – Uint16

    • 0 = 4800

    • 1 = 9600

    • 2 = 19200

    • 3 = 38400

    Baud rate

    Default value: 2 (19200)
    752 2F0 753 2F1 R/W – Uint16

    • 0 = Even

    • 1 = Odd

    • 2 = None

    Parity

    Default value: 0 (Even)
    753 2F1 754 2F2 R/W – Uint16

    • 0 = Disabled

    • 1 = Enabled

    Automatic configuration

    Default value: 0 (Diabled)
    754 2F2 755 2F3 R/W – Uint16

    • 0 = OFF

    • 1 = ON

    Disable modbus write

    Default value: 0 (OFF)

    NOTE: This register is only accessible in write mode only using the Modbus/98 protocol (See Safety standards compliance requirements). It is accessible in read only mode using standard Modbus.

    Insulation monitoring registers

    Address Register R/W Unit Type Range Description
    dec hex dec hex
    1020...1021 3FC...3FD 1021...1022 3FD...3FE R Ohm Float32 –

    Resistance

    The value NaN (Not a Number) 0xFFC00000 is returned during the auto-test.
    1022...1023 3FE...3FF 1023...1024 3FF..400 R nF Float32 –
    NOTE:

    Applicable for IM400N.

    Capacitance

    The value NaN (Not a Number) 0xFFC00000 is returned during the auto-test.
    1026 402 1027 403 R – Uint16

    • 0 = equal

    • 1 = under

    • 2 = over

    • 3 = understrict

    • 4= overstrict

    R equality
    1027 403 1028 404 R – Uint16

    • 0 = equal

    • 1 = under

    • 2 = over

    • 3 = understrict

    • 4= overstrict
    NOTE:

    Applicable for IM400N.

    C equality
    1029 405 1030 406 R V Float32 – RMS Voltage to ground
    1031 407 1032 408 R V Float32

    • 0 = Injection active

    • 1 = Injection inactive

    Injection status

    Insulation alarm

    Address Register R/W Unit Type Range Description
    dec hex dec hex
    1100 44C 1101 44D R – Uint16

    • 0 = No alarm

    • 1 = Insulation alarm active

    • 2 = Preventive insulation alarm active

    • 4 = Transient insulation alarm active

    • 8 = Insulation alarm acknowledged

    		 Insulation alarm
    1102 44E 1103 44F R – Uint16 – Product alarm status

    • Bit 1 - Status

      This bit is set for any of the following states:

      • Active alarm

      • Active preventive alarm

      • Alarm acknowledged

      • First measurement

    • Bit 13 - System error

      This bit is set for the following states:

      • Disconnected injection

      • Over voltage

      • Over capacitance

    • Bit 14 - Product error

      This bit is set for auto test failure state.

    • Bit 15 - Injection disabled
    1103 44F 1104 450 R – Uint16 – Compliment for product alarm status
    1104...1105 450...451 1105...1106 451...452 R – Uint32 0...0XFFFFFFFF Status counter
    1110...1111 456...457 1111...1112 457...458 R – Uint32 – Product status
    • 0 - No alarm

    • Bit 1 - Active alarm

    • Bit 2 - Active pre-alarm

    • Bit 3 - Transient alarm

    • Bit 4 - Alarm acknowledged

    • Bit 5 - Reserved

    • Bit 6 - Reserved

    • Bit 7 - Reserved

    • Bit 8 - Reserved

    • Bit 9 - First measurement

    • Bit 10 - Reserved

    • Bit 11 - Reserved

    • Bit 12 - Reserved

    • Bit 13 - Auto test

    • Bit 14 - Reserved

    • Bit 15 - Injection disable

    • Bit 16 - Reserved

    • Bit 17 - Disconnected injection

    • Bit 18 - Over limit capacitance

    • Bit 19 - Over voltage

    • Bit 20 - Reserved

    • Bit 21 - Reserved

    • Bit 22 - Reserved

    • Bit 23 - Reserved

    • Bit 24 - Reserved

    • Bit 25 - Product error

    • Bit 26 - Reserved

    • Bit 27 - Reserved

    • Bit 28 - Reserved

    • Bit 29 - Reserved

    • Bit 30 - Reserved

    • Bit 31 - HV1 and HV2 open

    • Bit 32 - Power Down

    Diagnostics

    Address Register R/W Unit Type Range Description
    dec hex dec hex
    2000 7D0 2001 7D1 W – Uint16 0xA456 = run auto-test Run the auto-test of the product without testing the relay (same as the auto-test cycle).
    2001...2004 7D1...7D4 2002...2005 7D2...7D5 R – Date/Time –

    Total uptime since first power up of product.

    Registers correspond to (result - 01/01/2000) = total uptime.

    TI081 date format (See Date and time (TI081 format))
    2005...2006 7D5...7D6 2006...2007 7D6...7D7 R – Uint32 –

    Total number of power cycles since first power-up of the product
    2050 802 2051 803 W – Uint16 –

    Write 0x1919 to reset factory settings (default factory settings)
    2051 803 2052 804 W – Uint16 –

    Write 0xF0A1 to reset all logs
    2052 804 2053 805 W – Uint16 –

    Write 0x25AB to reset all graphs

    CRC

    Address Register R/W Unit Type Range Description
    dec hex dec hex
    2500...2501 9C4...9C5 2501...2502 9C5...9C6 R – Uint32 –

    Application CRC value.
    2502...2503 9C6...9C7 2503...2504 9C7...9C8 R – Uint32 –

    Boot CRC value

    Settings

    Address Register R/W Unit Type Range Description
    dec hex dec hex
    2997...2998 BB5...BB6 2998...2999 BB6...BB7 R – Uint16 –

    Total number of settings changed since first power-up. Incremented by 1 for each change of one or several parameters.
    3000 BB8 3001 BB9 R/W — Uint16

    • 0 = Normally open

    • 1 = Normally closed

    • 2 = OFF

    Injection inhibition

    Default value: 0 (Normally open)
    3001 BB9 3002 BBA R/W – Uint16

    • 1= Standard

    • 2 = Failsafe

    Insulation alarm relay logic command

    Default value: 2 (Failsafe)
    3002...3003 BBA...BBB 3003...3004 BBB...BBC R/W Ohm Uint32

    0.04...500 kΩ

    Insulation alarm threshold

    Default value: 1 kΩ
    3004...3005 BBC...BBD 3005...3006 BBD...BBE R/W Ohm Uint32

    • 1 kΩ...1 MΩ

    • 0xFFFFFFFF = OFF

    Preventive alarm threshold

    OFF is used to deactivate the preventive alarm.

    Default value: 0xFFFFFFFF
    3007 BBF 3008 BC0 R/W s Uint16 0...7200 s

    Insulation alarm time delay (in seconds)

    Default value: 0 s
    3008 BC0 3009 BC1 R/W – Uint16

    For IM400N:

    • 0 = 4s

    • 1 = 40s

    • 2 = 400s

    For IM400THRN:

    • 0 = 2s

    • 1 = 20s

    • 2 = 200s

    		 Network filtering

    For IM400N:Default value: 1(40s)

    For IM400THRN:Default value: 1(20s)
    3009 BC1 3010 BC2 R/W Hz Uint16

    • 0 Hz

    • 50 Hz

    • 60 Hz

    • 400 Hz

    		 Network frequency

    Default value: 50 Hz
    3014 BC6 3015 BC7 R/W – Uint16 0000...9999

    Password

    Default value: 0000
    3015 BC7 3016 BC8 R/W – Uint16

    • 0 = OFF

    • 1 = ON

    Password protection

    Default value: 0 (password protection deactivated)
    3016 BC8 3017 BC9 R/W – Uint16

    • 0 = English

    • 1 = French

    • 2 = Spanish

    • 3 = Russian

    • 4 = Chinese

    • 5 = Italian

    • 6 = German

    • 7 = Portuguese

    Interface language

    Default value: 0 (English)
    3017 BC9 3018 BCA R/W % Uint16 10...100%

    Screen contrast

    Default value: 50%
    3018 BCA 3019 BCB R/W % Uint16 10...100%

    Screen brightness.

    Default value: 100%
    3019 BCB 3020 BCC R/W – Uint16

    For IM400N:

    • 0 = None

    • 1 = HV1700

    • 2 = PHT1000

    For IM400THRN:

    • 4 = P1N

    • 5 = None

    High voltage adapter

    Default value: 0 (no adapter)

    For IM400THRN: Default value: 5 (no adapter)
    3021 BCD 3022 BCE R/W s Uint16 0...7200 s

    Preventive insulation alarm time delay (in seconds)

    Default value: 0 s
    3022 BCE 3023 BCF R/W – Uint16

    • 0 = Disabled

    • 1 = Enabled (relay triggers for 3 seconds when fault disappears in alarm acknowledge mode)

    Corrected insulation fault signal

    Disable corrected insulation fault signal if acknowledge alarm relay is disabled.

    Default value: 0 (Disabled)
    3023 BCF 3024 BD0 R/W – Uint16

    • 0 = Disabled

    • 1 = Enabled

    Acknowledge alarm relay

    Default value: 1 (Enabled)
    3024 BD0 3025 BD1 R/W – Uint16

    For IM400THRN:

    • 0 = 20V

    • 1 = 40V

    • 2 = 60V

    • 3 = 80V
    NOTE:

    Applicable for IM400THRN.

    Injection voltage

    Default value: 2 (60V)
    3025 BD1 3026 BD2 R/W – Uint16

    For IM400N:

    • 0 = Power

    • 1 = Control

    For IM400THRN:3 = THR

    User application

    Default value: 0 (Power)

    For IM400THRN: Default value: 3 (THR)
    3026 BD2 3027 BD3 R/W – Uint16

    • 0 = OFF

    • 1 = ON

    Disconnected injection detection

    Default value: 0 (OFF)
    3027 BD3 3028 BD4 R/W – Uint16

    • 0 = OFF

    • 1 = Alarm

    • 2 = Prev Alarm

    • 3 = IFL
    NOTE:

    Applicable for IM400N.

    Insulation fault locating

    Default value: 0 (OFF)
    3028 BD4 3029 BD5 R/W – Uint16 0...50
    NOTE:

    Applicable for IM400N.

    Number of IFL

    Default value: 0
    3029 BD5 3030 BD6 R/W – Uint16

    • 0 = OFF

    • 1 = ON

    Auto-test: test with relays

    Default value: 1 (ON)
    3030...3031 BD6...BD7 3031...3032 BD7...BD8 R/W Ω Uint32

    • 0.1...500 kΩ

    • 0xFFFFFFFF = OFF

    HRG (Grounding resistance for impedant ungrounded system)

    Default value: 0xFFFFFFFF = OFF (Disabled)
    3032 BD8 3033 BD9 R/W – Uint16

    • 0 = OFF

    • 1 = ON

    Alarm when injection inhibition is active.

    Default value: 1 (ON)
    3033 BD9 3034 BDA R/W – Uint16

    • 0 = OFF

    • 1 = ON

    Screen saver activation

    Default value: 0 (OFF)
    3034 BDA 3035 BDB R/W s Uint16 30....3600 s

    Screen saver delay

    Default value: 300 s (5 min)
    3035 BDB 3036 BDC R/W – Uint16

    • 0 = OFF

    • 1 = ON

    Inhibition input

    Default value: 0 (OFF)
    3036 BDC 3037 BDD R/W Ω Uint16 0....50 KΩ
    NOTE:

    Applicable for IM400THRN.

    Transformer primary DC resistance.

    Default value: 0
    3037 BDD 3038 BDE R/W – Uint16

    • 0

    • 1

    • 3
    NOTE:

    Applicable for IM400THRN.

    Number of transformers.

    Default value: 0
    3038...3039 BDE...BDF 3039...3040 BDF...BE0 R/W Ω Float32 –
    NOTE:

    Applicable for IM400THRN.

    Adapter offset resistance.

    Default value: 0
    3040 BE0 3041 BE1 R/W – Uint16

    • 1 = Standard

    • 2 = Failsafe

    • 2 = Mirror

    Logical command of the preventive insulation alarm relay

    Default value: 2 (Failsafe)
    3041 BE1 3042 BE2 R/W s Uint16 0...7200 s

    Preventive insulation alarm time delay (in seconds)

    Default value: 0 s
    3044...3045 BE4...BE5 3045...3046 BE5...BE6 R/W – Uint32 –

    Insulation alarm relay bit map

    • Bit0 - Preventive insulation alarm

    • Bit1..3 - Reserved

    • Bit4 - Insulation alarm (read only)

    • Bit5..7 - Reserved

    • Bit8 - Injection inhibit

    • Bit9..15 - Reserved

    • Bit16 - System error

    • Bit17..23 - Reserved

    • Bit24 - Product error

    • Bit25..31 - Reserved
    3046...3047 BE6...BE7 3047...3048 BE7...BE8 R/W – Uint32 –

    Preventive insulation alarm relay bit map

    • Bit0 - Preventive insulation alarm (read only)

    • Bit1..3 - Reserved

    • Bit4 - Insulation alarm

    • Bit5..7 - Reserved

    • Bit8 - Injection inhibit

    • Bit9..15 - Reserved

    • Bit16 - System error

    • Bit17..23 - Reserved

    • Bit24 - Product error

    • Bit25..31 - Reserved
    3048 BE8 3049 BE9 R/W – Uint16

    • 0 = Internal Inhibition

    • 1 = External Inhibition

    Inhibition type

    Default value: 0 (Internal Inhibition)

    Trending

    Address Register R/W Unit Type Range Description
    dec hex dec hex
    12000 2EE0 12001 2EE1 R – Uint16 Hour trending Number of new records in trending buffer not yet read by the Modbus master.
    12001 2EE1 12002 2EE2 R – Uint16

    Day trending

    		 Number of new records in trending buffer not yet read by the Modbus master.
    12002 2EE2 12003 2EE3 R – Uint16

    Week trending

    		 Number of new records in trending buffer not yet read by the Modbus master.
    12003 2EE3 12004 2EE4 R – Uint16

    Month trending

    		 Number of new records in trending buffer not yet read by the Modbus master.
    12004 2EE4 12005 2EE5 R – Uint16

    Year trending

    		 Number of new records in trending buffer not yet read by the Modbus master.
    12010...12011 2EEA...2EEB 12011...12012 2EEB...2EEC R – Float32

    Hour value

    Reading hour values

    Each reading decrements the counter at address 12000.
    12012 2EEC 12013 2EED R – Uint16

    Hour value status

    Status:

    • 0x0000 - Data not initialized

    • 0x0001 - Data invalid

    • 0x0002 - Data valid

    • 0x0003 - Power supply loss after this value

    • 0x0004 - Injection disable after this value

    • 0x0005 - Power supply loss and injection disable after this value
    12013...12014 2EED...2EEE 12014...12015 2EEE...2EEF R – Float32

    Day value

    Reading day values

    Each reading decrements the counter at address 12031.
    12015 2EEF 12016 2EF0 R – Uint16

    Day value status

    Status:

    • 0x0000 - Data not initialized

    • 0x0001 - Data invalid

    • 0x0002 - Data valid

    • 0x0003 - Power supply loss after this value

    • 0x0004 - Injection disable after this value

    • 0x0005 - Power supply loss and injection disable after this value
    12016...12017 2EF0...2EF1 12017...12018 2EF1...2EF2 R – Float32

    Week value

    Reading week values

    Each reading decrements the counter at address 12002.
    12018 2EF2 12019 2EF3 R – Uint16

    Week value status

    Status:

    • 0x0000 - Data not initialized

    • 0x0001 - Data invalid

    • 0x0002 - Data valid

    • 0x0003 - Power supply loss after this value

    • 0x0004 - Injection disable after this value

    • 0x0005 - Power supply loss and injection disable after this value
    12019...12020 2EF3...2EF4 12020...12021 2EF4...2EF5 R – Float32

    Month value

    Reading month values

    Each reading decrements the counter at address 12003.
    12021 2EF5 12022 2EF6 R – Uint16

    Month value status

    Status:

    • 0x0000 - Data not initialized

    • 0x0001 - Data invalid

    • 0x0002 - Data valid

    • 0x0003 - Power supply loss after this value

    • 0x0004 - Injection disable after this value

    • 0x0005 - Power supply loss and injection disable after this value
    12022...12023 2EF6...2EF7 12023...12024 2EF7...2EF8 R – Float32

    Year value

    Reading year values

    Each reading decrements the counter at address 12004.
    12024 2EF8 12025 2EF9 R – Uint16

    Year value status

    Status:

    • 0x0000 - Data not initialized

    • 0x0001 - Data invalid

    • 0x0002 - Data valid

    • 0x0003 - Power supply loss after this value

    • 0x0004 - Injection disable after this value

    • 0x0005 - Power supply loss and injection disable after this value

    Logging

    Address Register R/W Unit Type Range Description
    dec hex dec hex
    19996...19997 4E1C...4E1D 19997...19998 4E1D...4E1E R – Uint32 – Roll over counter
    19998...19999 4E1E...4E1F 19999...20000 4E1F...4E20 R – Uint32 1...240 Number of event records
    20001 4E21 20002 4E22 R – Uint16 – Most recent record number
    20002...20013 4E22...4E2D 20003...20014 4E23...4E2E R – Record – Record 1
    20014...20025 4E2E...4E39 20015...20026 4E2F...4E3A R – Record – Record 2
    ...
    20338...20349 4F72...4F7D 20339...20350 4F73...4F7E R – Record – Record 30
    20710...20721 50E6...50F1 20711...20722 50E7...50F2 R – Record – Record 60

    QR Code is a registered trademark of DENSO WAVE INCORPORATED in Japan and other countries.

    Was this helpful?

    Contact Information
    Legal Information
    Privacy Policy
    Change your cookie settings