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  2. Moxa
  3. ioLogik R1214

Moxa ioLogik R1214 Modbus register map

Also covers ioLogik R1214-T

RS-485 remote I/O with 6 digital inputs and 6 relay outputs

  • Official
  • 168 registers
  • Modbus RTU
  • Revision 2 · 2026-10-17
  • Identity: serial number

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 RTU
Unit ID
1
Serial
9600 8N1 · 9600 baud, 8 data bits, none parity, 1 stop bit
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
58 holding registers, 32 input registers, 72 coils, 6 discrete inputs
Groups
3
Revision
2 · 2026-10-17
Added
()
File
maps/moxa/iologik-r1214.mbmap.json · 27 KB · history
SHA-256
a7146fa9941e95baf54a2bc26152bf11a0437083d8b0cacffa836fac87c10920
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
Serial number Serial number input 30027 string[6]

Sources and notes

Source: Moxa, "ioLogik R1200 Series User's Manual", edition 3.3 (February 2018), Appendix A

  • The unit ID is set with the two rotary switches (1-99). With the mode switch in Initial position the port runs at 9600 baud, 8N1; the settings in Run mode are configured by software.
  • 32-bit values are high word first.
  • The manual lists relay safe mode status for 8 channels (0x01E0-0x01E7) although the device has 6 relays; only the first 6 are in this map.
AreaAddressNameTypeAccessUnitScaleDescription
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 32 bool RW 1: reset to initial value
CO 33 bool RW 1: reset to initial value
CO 34 bool RW 1: reset to initial value
CO 35 bool RW 1: reset to initial value
CO 36 bool RW 1: reset to initial value
CO 37 bool RW 1: reset to initial value
CO 64 bool RW 1: clear overflow flag
CO 65 bool RW 1: clear overflow flag
CO 66 bool RW 1: clear overflow flag
CO 67 bool RW 1: clear overflow flag
CO 68 bool RW 1: clear overflow flag
CO 69 bool RW 1: clear overflow flag
CO 96 bool RW
CO 97 bool RW
CO 98 bool RW
CO 99 bool RW
CO 100 bool RW
CO 101 bool RW
CO 128 bool RW
CO 129 bool RW
CO 130 bool RW
CO 131 bool RW
CO 132 bool RW
CO 133 bool RW
CO 160 bool RW
CO 161 bool RW
CO 162 bool RW
CO 163 bool RW
CO 164 bool RW
CO 165 bool RW
CO 320 bool RW
CO 321 bool RW
CO 322 bool RW
CO 323 bool RW
CO 324 bool RW
CO 325 bool RW
CO 352 bool RW
CO 353 bool RW
CO 354 bool RW
CO 355 bool RW
CO 356 bool RW
CO 357 bool RW
CO 384 bool RW
CO 385 bool RW
CO 386 bool RW
CO 387 bool RW
CO 388 bool RW
CO 389 bool RW
CO 416 bool RW
CO 417 bool RW
CO 418 bool RW
CO 419 bool RW
CO 420 bool RW
CO 421 bool RW
CO 448 bool RW
CO 449 bool RW
CO 450 bool RW
CO 451 bool RW
CO 452 bool RW
CO 453 bool RW
CO 479 bool RW 1: reset pulse count
CO 480 bool RW 1: reset pulse count
CO 481 bool RW 1: reset pulse count
CO 482 bool RW 1: reset pulse count
CO 483 bool RW 1: reset pulse count
CO 484 bool RW 1: reset pulse count
DI 0 bool R
DI 1 bool R
DI 2 bool R
DI 3 bool R
DI 4 bool R
DI 5 bool R
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 32 uint32 ABCD R
IR 34 uint32 ABCD R
IR 36 uint32 ABCD R
IR 38 uint32 ABCD R
IR 40 uint32 ABCD R
IR 42 uint32 ABCD R
IR 320 uint32 ABCD R
IR 322 uint32 ABCD R
IR 324 uint32 ABCD R
IR 326 uint32 ABCD R
IR 328 uint32 ABCD R
IR 330 uint32 ABCD R
IR 384 uint32 ABCD R
IR 386 uint32 ABCD R
IR 388 uint32 ABCD R
IR 390 uint32 ABCD R

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