Diverse Hardware Infrastructure Modbus Gateway supports the four most commonly used communication standards, RS-232/485/422, and Ethernet. The ease-of use configuration utility provided with Modbus Gateway can quickly select the hardware  interface , and easily switch to the existing communication infrastructure. Industrial EMC protection and wide temperature operation capability make MB5904D ready for every mission. And if cabling is an issue, the PoE-powered version can allow MB5904D to be powered through PoE.

Advanced embedded security and advanced features Relax. MB5904D Modbus Gateway supports OpenVPN and IPsec VPN encryption, allowing you to safely use the device over the internet without worrying about malicious attacks, data sniffing or unintentional remote control of your Modbus slaves. On your LAN, RSTP protocol will provide an additional layer of security in case of link losses.

Switching between Modbus Protocols Modbus Gateway supports the standard Modbus protocol and is capable of converting any Modbus protocols between Modbus TCP, Modbus RTU, and Modbus ASCII for all supported hardware interfaces. All of this, in bidirectional mode: Ethernet and Serial ends can selected to be either master or slave Modbus ID Routing. Modbus Gateway supports various types of hardware communication interfaces, Modbus protocol conversion, and Modbus ID routing. Therefore the Modbus Gateway can integrate your existing and complex Modbus hardware configuration into a simple network that can be easily managed.

Network Interface
Speed	IEEE 802.3 10BaseT IEEE 802.3u 100BaseT(X) IEEE 802.3u for 100Base-X (SFP version only) IEEE 802.3z for 1000Base-X (SFP version only)
PoE standard supported	IEEE 802.3 af (-PoE version only)
LAN Mode	Dual Subnets or Network Redundancy
Connector ports	2x 10/100BASE-T(X) RJ-45 or 2x 100/1000 Base-X SFP Slots (SFP version)

Serial Interface
Connector	1x2 5 pin 3.81mm Terminal Block, or D-sub9 connector
Ports	4
Mode	RS-232/422/485, software selectable
Baud Rate	1,200~921,600 bps
Parity	None, Odd, Even
Data Bits	7,8
Stop Bits	1,2
Isolation	2 KV

Other Interfaces
USB Ports	1
Speed	USB 2.0
Connector	USB A Type

Software
Protocols	IPv4, ICMP, TCP, UDP, DHCP Client, SNMPv1,v2c,v3, HTTP, HTTPS, Telnet, RFC2217, RSTP, Security via PPTP, OpenVPN Client/Server or IPsec (peer-to-peer or peer-to-side) with up to 37.9Mbps VPN throughput,SMTP/TLS
Configuration	Atop Management Utility, Web UI, Telnet
VirtualCOM	Windows/Linux redirection software
Modbus Gateway Supported Modes	Ethernet: Modbus TCP Server/Client(or VCOM); Serial: Modbus RTU/ASCII (master/slave)
Maximum number of Modbus clients/slaves	Modbus TCP: Maximum 16 clients; Maximum 32 slave connections
Modbus concentrator	Optional - please ask your ATOP Representative
Modbus redundant concentrator	Optional - please ask your ATOP Representative

Power	Value
Input Voltage	Dual 12 - 48VDC (non-PoE Models); or through Ethernet Cable (PoE versions)
Input Current (@ 12VDC)	0.65 A @ 12 VDC
Power Consumption	Approximately 8 W (Max)
Connector	7-Pin 5.08mm Lockable Terminal Block
Power Redundancy	Yes
Reverse Polarity Protection	Yes
Relay Output	1A @ 30 VDC (normal open)

Physical Characteristics	Value
Housing	IP30 SPCC housing
Dimension (W x H x D)	55 x 145 x 113 mm
Weight	1,000g
Installation	DIN-Rail , Wall mount (optional kit)
Reset Button	Yes

Environmental Limits
Operating Temperature	-40°C~85°C (-40°F~185°F)
Storage Temperature	-40°C~85°C (-40°F~185°F)
Ambient Relative Humidity	5%~95%, 55°C (Non-condensing)

Certification	Standard
Safety	IEC/EN 61010-1, UL61010-1, IEC/EN 61010-2-201, UL61010-2-201, EN62368-1
EMC	FCC Part 15, Subpart B, Class A EN 55032, EN 61000-3-2, EN 61000-3-3, EN 55024, EN 61000-6-2, EN 61000-6-4

Standard	Item	Test	Value	Level
IEC 61000-4-2	ESD	Contact Discharge	±6kV	3
IEC 61000-4-2	ESD	Air Discharge	±8kV	3
IEC 61000-4-3	RS	80-1000MHz	10 V/m	3
IEC 61000-4-3	RS	1.4-2.0GHz	3 V/m	2
IEC 61000-4-3	RS	2.0-2.7GHz	1 V/m	1
IEC 61000-4-4	EFT	DC Power Port	±2.0kV	3
IEC 61000-4-4	EFT	Signal Port	±2.0KV	4
IEC 61000-4-5	Surge	DC Power Port	Line-to Line±1.0KV	3
IEC 61000-4-5	Surge	DC Power Port	Line-to Earth±1.0KV	2
IEC 61000-4-5	Surge	Signal Port	Line-to Earth±2.0K	3
IEC 61000-4-6	CS	0.15-80MHz	10 Vrms	3
IEC 61000-4-8	PFMF	Enclosure	30 A/m	4

Certification	Standard
Shock	MIL-STD-810G Method 516.7
Drop (Freefall)	MIL-STD-810G Method 516.7
Vibration	MIL-STD-810G Method 514.7
RoHS	Yes
MTBF	14.56 Years (according to MIL-HDBK-217F)
Warranty	5 Years

MODEL NAME	PART NUMBER	DESCRIPTION	ETHERNET PORTS	SERIAL PORTS
MB5904D-4P-DB	1P1MB5904D0004G	Ind. 4-Port Modbus Gateway, 10/100BASET(X), DB9	2 (RJ45)	4 (DB9)
MB5904D-4P-TB	1P1MB5904D0005G	Ind. 4-Port Modbus Gateway, 10/100BASET(X), TB5	2 (RJ45)	4 (TB5)
MB5904D-4P-Sis	1P1MB5904D0006G	Ind. 4-Port Modbus Gw,10/100BASET(X),3kV Isolated	2 (RJ45)	4 (TB5)
MB5904D-4P-PoE-DB	Contact Headquarter	Ind. 4-Port Modbus Gateway,10/100BASET(X) with PoE PD (802.3af), DB9	2 (RJ45)	4 (DB9)
MB5904D-4P-PoE-TB	Contact Headquarter	Ind. 4-Port Modbus Gateway,10/100BASET(X) with PoE PD (802.3af), TB5	2 (RJ45)	4 (TB5)
MB5904D-4P-PoE-Sis	Contact Headquarter	Ind. 4-Port Modbus Gateway,10/100BASET(X) with PoE PD (802.3af), TB5, 3kV Serial Isolation	2 (RJ45)	4 (TB5)
MB5904D-4P-G-DB-SFP	1P1MB5904DG001G	Ind. 4-Port Modbus Gateway, 100/1000BASEX SFP Slot, DB9	2 (SFP)	4 (DB9)
MB5904D-4P-G-TB-SFP	1P1MB5904DG002G	Ind. 4-Port Modbus Gateway, 100/1000BASEX SFP Slot, TB5	2 (SFP)	4 (TB5)
MB5904D-4P-G-Sis-SFP	1P1MB5904DG003G	Ind. 4-Port Modbus Gateway, 100/1000BASEX SFP Slot, TB5, 3kV Serial Isolation	2 (SFP)	4 (TB5)

MODEL NAME	PART NUMBER	DESCRIPTION
SDR-75-24	50500752240001G	75W/3.2A DIN-Rail 24VDC power supply with 88~264VAC / 124~370VDC input
CBL-RJ45(8P)-DB9(F)-90-C	50891971G	8-pin RJ45-DB9 debug cable, 90cm
ADP-DB9(F)-TB5	59906231G	Female DB9 to Female 3.81 TB5 Converter
GDC-120	59906861G	120mm copper woven grounding cable
WMK-450-Black	70100000000052G	Aluminum wall mount kit
LM28-C3S-TI-N	50708031G	SFP Transceiver, 1250Mbps, 850nmVCSEL, Multi-mode, 550m, 3.3V, -20~85°C
LM38-C3S-TI-N	50709411G	SFP Transceiver, 1250Mbps, 1310nmFP, Multi-mode, 2km, 3.3V, -40~85°C
LS38-C3S-TI-N	50709391G	SFP Transceiver, 1250Mbps, 1310nmFP, Single-mode, 10km, 3.3V, -40~85°C
LS38-C3L-TI-N	50709441G	SFP Transceiver, 1250Mbps, 1310nmDFB, Single-mode, 30km, 3.3V, -40~85°C
AXGD-5854-0513	522AXGD5854001G	SFP Transceiver, 1250Mbps, 850nm, Multi-mode, 550m, 3.3V, -40~85°C, DDMI
AXGD-1354-0523	522AXGD1354001G	SFP Transceiver, 1250Mbps, 1310nm, Multi-mode, 2km, 3.3V, -40~85°C, DDMI
AXGD-1354-0533	522AXGD1354011G	SFP Transceiver, 1250Mbps, 1310nm, Single-mode, 10km, 3.3V, -40~85°C, DDMI
AXGD-3354-0593	522AXGD3354001G	SFP Transceiver, 1250Mbps, 1310nm, Single-mode, 40km, 3.3V, -40~85°C, DDMI

Datasheet

VERSION	NAME	TIME	SIZE	DOWNLOAD
v1.1	Datasheet EN	2023-11-01	337.85 KB
v0.9	Datasheet EN	2020-07-10	687.52 KB
v0.8	Datasheet EN	2018-05-18	574.42 KB
v0.7	Datasheet EN	2018-05-02	573.98 KB
3 older versions

Hardware Installation Guide

VERSION	NAME	TIME	SIZE	DOWNLOAD
v1.1	SE5904D/MB5904D/PG5904D Hardware Installation Guide	2016-03-23	3.81 MB

Manual

VERSION	NAME	TIME	SIZE	DOWNLOAD
v1.4	MB59XX User Manual	2019-11-19	3.76 MB
v1.3	MB59XX User Manual	2018-04-17	3.70 MB
1 older version

Firmware

VERSION	NAME	TIME	SIZE	DOWNLOAD
v1.77	MB59XX Firmware	2024-08-12	15.92 MB
v1.68	MB59XX Firmware	2022-09-13	16.15 MB
1 older version
v1.68c	MB59XX Firmware (Download and install this file first if your present firmware version is 1.46 or earlier)	2022-10-27	16.14 MB

Utility

VERSION	NAME	TIME	SIZE	DOWNLOAD
v1.0	Linux Driver_x64	2021-03-29	210.16 KB
v5.60	Management Utility for Windows	2021-01-18	23.65 MB
v5.20	Management Utility for Windows	2016-10-28	16.21 MB
1 older version

STP/DXF drawings

VERSION	NAME	TIME	SIZE	DOWNLOAD
v1.0	STP file PG-SE-MB5904D	2022-07-07	1.87 MB

Test reports

VERSION	NAME	TIME	SIZE	DOWNLOAD
	MB5904D Declarations of Conformity	2023-03-10	290.86 KB
v1.0	SE-MB-PG5904D Certifications CE_FCC	2019-11-20	3.59 MB
v1.0	SE-MB-PG5904D Certifications EN61000-6-2&4	2019-11-20	6.11 MB
v1.0	SE-MB-PG5904D Certifications Environmental	2019-11-20	4.60 MB
v1.0	SE-MB-PG5904D Certifications LVD	2019-11-20	3.62 MB
v1.0	SE-MB-PG5904D Certifications UL	2019-11-20	157.83 KB