Moxa ioLogik E2240 Modbus register map

Also covers ioLogik E2240-T

Ethernet micro controller with 8 analog inputs and 2 analog outputs (Click&Go logic)

Official
156 registers
Modbus TCP
Revision 2 · 2026-10-17

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: 108 holding registers, 24 input registers, 24 coils
Groups: 3
Revision: 2 · 2026-10-17
Added: 2026-10-14 (2026-10-14)
File: maps/moxa/iologik-e2240.mbmap.json · 26 KB · history
SHA-256: 19bc717693c278fbdededceb0f7f777d17392f49c256d11a1d4d6305e75a4b22
Manufacturer: moxa.com

Sources and notes

ioLogik E2200 Series User Manual · version 7.2, 2022-07
Appendix I, ioLogik E2240 Modbus mapping

Source: Moxa, "ioLogik E2200 Series User Manual", version 7.2 (July 2022), Appendix I

Modbus/TCP address map from Appendix I of the manual. Many values appear twice, as a coil or discrete input and again as a holding register (names ending in "(register)").
32-bit values are two registers; the manual lists the high word first unless the register says otherwise.
Not in this map: the DI counter mode values at holding 0x0D00, which the manual lists as two-word values at consecutive addresses.
The AI LED coil in the manual shares coil address 0x0000 with the AI 0 reset minimum coil; it is listed here as given.

Area	Address	Type	Access	Description
CO	0	bool	RW	Read: 0: no action Write: 1: reset AI min value 0: return illegal data value
CO	1	bool	RW	Read: 0: no action Write: 1: reset AI min value 0: return illegal data value
CO	2	bool	RW	Read: 0: no action Write: 1: reset AI min value 0: return illegal data value
CO	3	bool	RW	Read: 0: no action Write: 1: reset AI min value 0: return illegal data value
CO	4	bool	RW	Read: 0: no action Write: 1: reset AI min value 0: return illegal data value
CO	5	bool	RW	Read: 0: no action Write: 1: reset AI min value 0: return illegal data value
CO	6	bool	RW	Read: 0: no action Write: 1: reset AI min value 0: return illegal data value
CO	7	bool	RW	Read: 0: no action Write: 1: reset AI min value 0: return illegal data value
CO	8	bool	RW	Read: 0: no action Write: 1: reset AI max value 0: return illegal data value
CO	9	bool	RW	Read: 0: no action Write: 1: reset AI max value 0: return illegal data value
CO	10	bool	RW	Read: 0: no action Write: 1: reset AI max value 0: return illegal data value
CO	11	bool	RW	Read: 0: no action Write: 1: reset AI max value 0: return illegal data value
CO	12	bool	RW	Read: 0: no action Write: 1: reset AI max value 0: return illegal data value
CO	13	bool	RW	Read: 0: no action Write: 1: reset AI max value 0: return illegal data value
CO	14	bool	RW	Read: 0: no action Write: 1: reset AI max value 0: return illegal data value
CO	15	bool	RW	Read: 0: no action Write: 1: reset AI max value 0: return illegal data value
CO	0	bool	RW
CO	1	bool	RW
CO	2	bool	RW
CO	3	bool	RW
CO	4	bool	RW
CO	5	bool	RW
CO	6	bool	RW
CO	7	bool	RW
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	uint16	R
IR	9	uint16	R
IR	10	uint16	R
IR	11	uint16	R
IR	12	uint16	R
IR	13	uint16	R
IR	14	uint16	R
IR	15	uint16	R
IR	16	uint16	R
IR	17	uint16	R
IR	18	uint16	R
IR	19	uint16	R
IR	20	uint16	R
IR	21	uint16	R
IR	22	uint16	R
IR	23	uint16	R
HR	0	uint16	RW
HR	1	uint16	RW
HR	2	uint16	RW
HR	3	uint16	RW
HR	4	uint16	RW
HR	5	uint16	RW
HR	6	uint16	RW
HR	7	uint16	RW
HR	8	uint16	RW
HR	9	uint16	RW
HR	10	uint16	RW
HR	11	uint16	RW
HR	12	uint16	RW
HR	13	uint16	RW
HR	14	uint16	RW
HR	15	uint16	RW
HR	16	uint16	RW
HR	17	uint16	RW
HR	18	uint16	RW
HR	19	uint16	RW
HR	20	uint16	RW
HR	21	uint16	RW
HR	22	uint16	RW
HR	23	uint16	RW
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	32	uint16	RW
HR	33	uint16	RW
HR	34	uint16	RW
HR	35	uint16	RW
HR	136	uint16	RW
HR	137	uint16	RW
HR	138	uint16	RW
HR	139	uint16	RW
HR	140	uint16	RW
HR	141	uint16	RW
HR	142	uint16	RW
HR	143	uint16	RW
HR	144	uint32 ABCD	RW
HR	146	uint32 ABCD	RW
HR	148	uint32 ABCD	RW
HR	150	uint32 ABCD	RW
HR	152	uint32 ABCD	RW
HR	154	uint32 ABCD	RW
HR	156	uint32 ABCD	RW
HR	158	uint32 ABCD	RW

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).