device library

WAGO 750-362 Modbus TCP coupler

Register map(s) for this device, with a note of how far each has been checked. Addresses are 0-based, as on the wire. Scale and byte order are confirmed only at the hardware-verified rung.

coherence-checked

Round-trips through a real Modbus stack with no overlapping addresses and a word-order-sensitive codec — the map is internally coherent and wire-decodable. Does NOT prove byte-order or scaling match a real device: the emulator is seeded from the map's own types, so a uniformly wrong byte-order still round-trips. Only hardware-verified confirms byte-order/scale on the wire.

pointaddress (0-based)typescaleunit
Watchdog time read/write4096U161
Watchdog coding mask 1...164097U161
Watchdog coding mask 17...324098U161
Watchdog trigger4099U161
Minimum trigger time4100U161
Watchdog stop4101U161
Watchdog status4102U161
Restart watchdog4103U161
Stop watchdog4104U161
Modbus and HTTP close at watchdog time-out4105U161
Watchdog configuration4106U161
Save watchdog parameter4107U161
LED error code4128U161
LED error argument4129U161
Number of analog output data in the process image (in bits)4130U161
Number of analog input data in the process image (in bits)4131U161
Number of digital output data in the process image (in bits)4132U161
Number of digital input data in the process image (in bits)4133U161
Modbus TCP statistics4137U161
Number of TCP connections4138U161
KBUS Reset4139U161
Configuration MODBUS/TCP time-out4144U161ms
Read out the MAC-ID of the coupler/controller4145U161
Modbus Response Delay (ms)4151U161ms
Modbus TOS4152U161
Diagnosis of the connected I/O modules4176U161
Constant 0x00008192U161
Constant 0xFFFF8193U161
Constant 0x12348194U161
Constant 0xAAAA8195U161
Constant 0x55558196U161
Constant 0x7FFF8197U161
Constant 0x80008198U161
Constant 0x3FFF8199U161
Constant 0x40008200U161
Firmware version8208U161
Series code8209U161
Coupler/controller code8210U161
Firmware version major revision8211U161
Firmware version minor revision8212U161
Short description controller8224U161
Compile time of the firmware8225U161
Compile date of the firmware8226U161
Indication of the firmware loader8227U161
Description of the connected I/O modules (module 0...64)8240U161
Description of the connected I/O modules (module 65...128)8241U161
Description of the connected I/O modules (module 129...192)8242U161
Description of the connected I/O modules (module 193...255)8243U161
Process image settings table 0 register 38245U161
Fieldbus coupler/controller diagnostics8246U161
Software reset8256U161
Factory settings8259U161

link settings as documented (unverified): TCP; FC 01,02,03,04,05,06,11,15,16,22,23

⚠ WARNING – DO NOT REMOVE OR REPLACE FUSED WHILE ENERGIZED! WARNING – DO NOT DISCONNECT WHILE ENERGIZED! WARNING – ONLY DISCONNECT IN A NON-HAZARDOUS AREA! — Starkest reads only; we never write a control register.

bench facts as documented (unverified)
terminalsCAGE CLAMP
connector2 x RJ-45
isolation500 V system/supply
max registers/read125
response timeout60000 ms
model register0x2012
firmware register0x2010
power24 V DC (-25% ... +30%)
environmentSurrounding air temperature, operation 0 °C ... 55 °C, storage -25 °C ... +85 °C, Relative humidity Max. 5 % ... 95 % without condensation, IP20
certificationsCE, UL61010-2-201, MSIP-REM-W43-PFC750, UL 121201 Cl I Div 2, ATEX, IECEx, ABS, DNV GL, PRS
doc revisionVersion 1.0.2
field reports — community-sourced, unverified (checked 2026-06-11)
  • Uncontrolled resource consumption in Series WAGO 750-3x/-8x products may allow an unauthenticated remote attacker to DoS the MODBUS server with specially crafted packets (CVE-2023-1150). [source]
  • Improper Authentication vulnerability in WAGO 750-8XX and 750-362 series with FW version <= FW03 allows an attacker to change the settings of the devices by sending specifically constructed requests without authentication (CVE-2020-12506). [source]
  • When a PLC stops or loses communication with the 750-362 coupler, outputs are kept in their last state by default unless the Modbus watchdog (Standard or Alternative) is explicitly configured on the coupler. [source]
  • If the alternative watchdog is enabled on the coupler, outputs may turn ON and OFF repeatedly if the communication request interval from the master is not strictly lower than the watchdog timeout value. [source]
  • confirmed: comms defaults and framing (TCP, function codes 1, 2, 3, 4, 5, 6, 11, 15, 16, 22, 23) — confirmed by WAGO 750-362 Manual V1.0.2
  • confirmed: certifications (CE, UL61010-2-201, MSIP-REM-W43-PFC750, UL 121201 Cl I Div 2, ATEX, IECEx, ABS, DNV GL, PRS) — confirmed by WAGO 750-362 Manual V1.0.2
  • confirmed: control warning (WARNING – DO NOT REMOVE OR REPLACE FUSED WHILE ENERGIZED! WARNING – DO NOT DISCONNECT WHILE ENERGIZED! WARNING – ONLY DISCONNECT IN A NON-HAZARDOUS AREA!) — confirmed by WAGO 750-362 Manual V1.0.2
  • confirmed: environmental specifications (Surrounding air temperature, operation 0 °C ... 55 °C, storage -25 °C ... +85 °C, Relative humidity Max. 5 % ... 95 % without condensation, IP20) — confirmed by WAGO 750-362 Manual V1.0.2
  • confirmed: physical specifications (2 x RJ-45, 500 V system/supply, CAGE CLAMP) — confirmed by WAGO 750-362 Manual V1.0.2
  • confirmed: power specifications (24 V DC (-25% ... +30%)) — confirmed by WAGO 750-362 Manual V1.0.2
  • confirmed: quirks (max_read_registers: 125, response_timeout_ms: 60000) — confirmed by WAGO 750-362 Manual V1.0.2
  • confirmed: register map (watchdog_time @ 4096, watchdog_status @ 4102, led_error_code @ 4128, led_error_argument @ 4129, analog_outputs_size_bits @ 4130, analog_inputs_size_bits @ 4131, digital_outputs_size_bits @ 4132, digital_inputs_size_bits @ 4133, tcp_connections_count @ 4138, firmware_version @ 8208, series_code @ 8209, coupler_controller_code @ 8210, firmware_major_revision @ 8211, firmware_minor_revision @ 8212) — confirmed by WAGO 750-362 Manual V1.0.2

The trust ladder

Each rung states what it proved and what it did not. Gray until proven; green is earned by hardware only.

Device not here? Upload its manual and get a checked map back. It's free.

Want it confirmed against your own device? Order hardware verification. If it doesn't check out, you don't pay.

Building on a lot of devices? License the library — machine-readable maps, the firmware matrix, and API access.