Moxa ioLogik E1241 Modbus register map
Also covers ioLogik E1241-T
Remote Ethernet I/O with 4 analog outputs and a two-port Ethernet switch
- Official
- 32 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.
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
- 8 holding registers, 11 input registers, 5 coils, 8 discrete inputs
- Groups
- 3
- Revision
- 2 · 2026-10-17
- Added
- ()
- File
- maps/moxa/iologik-e1241.mbmap.json · 6 KB · history
- SHA-256
- b1240bdc9aae0867d84a080bc00196150a4e325ebb99c0517e089ef479eaacf9
- 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.
| Role | Register | Address | Type | Values |
|---|---|---|---|---|
| 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
- ioLogik E1200 Series User Manual · version 16.1, 2024-04 Appendix A, Modbus/TCP default address mappings
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.
| Area | Address | Name | Type | Access | Unit | Scale | Description |
|---|---|---|---|---|---|---|---|
| HR | 0 | float32 ABCD | RW | ||||
| HR | 2 | float32 ABCD | RW | ||||
| HR | 4 | float32 ABCD | RW | ||||
| HR | 6 | float32 ABCD | RW | ||||
| HR | 1024 | uint16 | RW | ||||
| HR | 1025 | uint16 | RW | ||||
| HR | 1026 | uint16 | RW | ||||
| HR | 1027 | uint16 | RW | ||||
| DI | 4096 | bool | R | ||||
| DI | 4097 | bool | R | ||||
| DI | 4098 | bool | R | ||||
| DI | 4099 | bool | R | ||||
| DI | 4112 | bool | R | ||||
| DI | 4113 | bool | R | ||||
| DI | 4114 | bool | R | ||||
| DI | 4115 | bool | R | ||||
| CO | 4128 | bool | RW | Write 1 to clear the safe mode flag | |||
| CO | 4129 | bool | RW | Write 1 to clear the safe mode flag | |||
| CO | 4130 | bool | RW | Write 1 to clear the safe mode flag | |||
| CO | 4131 | bool | RW | Write 1 to clear the safe mode flag | |||
| CO | 4144 | bool | RW | Write 1 to clear the watchdog alarm | |||
| 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 |
No registers match
Try part of the name, an address (decimal or 0x hex) or clear the filters.
Help improve this map
- I tested it on a deviceReport whether it worked, even if you did not write the map.
- Suggest a correctionEdit the file on GitHub; it opens a pull request.
- Report a problemA wrong address, type, scale or byte order.
- Read the formatWhat each key of the file means (SPEC.md).