MBMap Registry
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  2. Moxa
  3. ioLogik E1240

Moxa ioLogik E1240 Modbus register map

Also covers ioLogik E1240-T

Remote Ethernet I/O with 8 analog inputs (voltage or current) and a two-port Ethernet switch

  • Official
  • 99 registers
  • Modbus TCP
  • Revision 2 · 2026-10-17
  • Identity: firmware

Official: Written from the manufacturer's documentation, but not tested on a device yet. Check the map against the manufacturer's documentation before you write to a live device. Tested it? Report a test.

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Communication

Protocol
Modbus TCP
Unit ID
1
TCP port
502
Byte / word order
ABCD · bytes big-endian, words high first
Addresses
0-based

Connection values are defaults: the device may be configured differently.

Map

Registers
16 holding registers, 67 input registers, 16 coils
Groups
3
Revision
2 · 2026-10-17
Added
()
File
maps/moxa/iologik-e1240.mbmap.json · 15 KB · history
SHA-256
d3e068c96821ab77b1ad7a2fbf43fa7195dd1ccca67fc0787e86e3f5d1b27e9a
Manufacturer
moxa.com

Device identity

What a tool can read to check that this map fits the connected device (SPEC.md section 4.7). Registers with a role are read like any other register.

Registers
RoleRegisterAddressTypeValues
Firmware Firmware version major input 5029 uint16 bits 8–15
Firmware Firmware version minor input 5029 uint16 bits 0–7
Firmware Firmware version patch input 5030 uint16 bits 8–15

Sources and notes

Source: Moxa, "ioLogik E1200 Series User Manual", version 16.1 (April 2024), Appendix A

  • Default Modbus/TCP address map (Appendix A). The addresses can be changed in the web console under user-defined Modbus addressing; this map fits the defaults.
  • 32-bit values are high word first.
  • Scaled values are float32.
AreaAddressNameTypeAccessUnitScaleDescription
IR 0 uint16 R
IR 1 uint16 R
IR 2 uint16 R
IR 3 uint16 R
IR 4 uint16 R
IR 5 uint16 R
IR 6 uint16 R
IR 7 uint16 R
IR 8 float32 ABCD R
IR 10 float32 ABCD R
IR 12 float32 ABCD R
IR 14 float32 ABCD R
IR 16 float32 ABCD R
IR 18 float32 ABCD R
IR 20 float32 ABCD R
IR 22 float32 ABCD R
IR 24 uint16 R
IR 25 uint16 R
IR 26 uint16 R
IR 27 uint16 R
IR 28 uint16 R
IR 29 uint16 R
IR 30 uint16 R
IR 31 uint16 R
IR 32 uint16 R
IR 33 uint16 R
IR 34 uint16 R
IR 35 uint16 R
IR 36 uint16 R
IR 37 uint16 R
IR 38 uint16 R
IR 39 uint16 R
IR 109 float32 ABCD R
IR 111 float32 ABCD R
IR 113 float32 ABCD R
IR 115 float32 ABCD R
IR 117 float32 ABCD R
IR 119 float32 ABCD R
IR 121 float32 ABCD R
IR 123 float32 ABCD R
IR 125 float32 ABCD R
IR 127 float32 ABCD R
IR 129 float32 ABCD R
IR 131 float32 ABCD R
IR 133 float32 ABCD R
IR 135 float32 ABCD R
IR 137 float32 ABCD R
IR 139 float32 ABCD R
IR 60 uint16 R
IR 61 uint16 R
IR 62 uint16 R
IR 63 uint16 R
IR 64 uint16 R
IR 65 uint16 R
IR 66 uint16 R
IR 67 uint16 R
HR 24 uint16 RW
HR 25 uint16 RW
HR 26 uint16 RW
HR 27 uint16 RW
HR 28 uint16 RW
HR 29 uint16 RW
HR 30 uint16 RW
HR 31 uint16 RW
HR 40 float32 ABCD RW
HR 42 float32 ABCD RW
HR 44 float32 ABCD RW
HR 46 float32 ABCD RW
HR 48 float32 ABCD RW
HR 50 float32 ABCD RW
HR 52 float32 ABCD RW
HR 54 float32 ABCD RW
CO 4145 bool RW Write 1 to reset the minimum values
CO 4146 bool RW Write 1 to reset the minimum values
CO 4147 bool RW Write 1 to reset the minimum values
CO 4148 bool RW Write 1 to reset the minimum values
CO 4149 bool RW Write 1 to reset the minimum values
CO 4150 bool RW Write 1 to reset the minimum values
CO 4151 bool RW Write 1 to reset the minimum values
CO 4152 bool RW Write 1 to reset the minimum values
CO 4153 bool RW Write 1 to reset the maximum values
CO 4154 bool RW Write 1 to reset the maximum values
CO 4155 bool RW Write 1 to reset the maximum values
CO 4156 bool RW Write 1 to reset the maximum values
CO 4157 bool RW Write 1 to reset the maximum values
CO 4158 bool RW Write 1 to reset the maximum values
CO 4159 bool RW Write 1 to reset the maximum values
CO 4160 bool RW Write 1 to reset the maximum values
IR 5000 string[10] R
IR 5020 uint32 ABCD R s
IR 5024 uint16 R MAC address, two bytes per register, first byte high
IR 5025 uint16 R
IR 5026 uint16 R
IR 5027 uint32 ABCD R One byte per octet, first octet in the high byte
IR 5029 uint16 bits 8–15 R
IR 5029 uint16 bits 0–7 R
IR 5030 uint16 bits 8–15 R
IR 5031 uint32 ABCD R e.g. Build16051718 reads as 16051718
IR 5040 string[30] R

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