EKI-1221/CI/I
EKI-1222/CI/I
EKI-1224/CI/I

1-Port Modbus Gateway
2-Port Modbus Gateway
4-Port Modbus GatewayFeatures 2 x 10/100 Mbps Ethernet ports for LAN redundancy
 Integrates Modbus TCP and Modbus RTU/ASCII networks
 Supports up to 921.6 kbps and any baud rate setting
 Supports up to 16 connections per serial port under Modbus client mode and32 sessions under Modbus servers mode
 Software-selectable RS-232/422/485-2w/485-4w communication
 Mountable via DIN rail and wall mount Built-in 15 kV ESD protection for all serial signals
 Automatic RS-485 data flow control
 Supports surge protection for DC power ports with line-to-line (1 kV) andline-to-earth (2 kV) for signal ports with 2 kV
 "I" models support a wide operating temperature
EKI-1221

EKI-1221CI-DE

EKI-1222

EKI-1222CI-DE

 "CI" models support isolation and a wide operating temperature

EKI-1224RoHS
COMPLIANT
2002/95/EC

Introduction
The EKI-1200 series Modbus gateways are bi-directional gateways for integrating new and existing Modbus/RTU and Modbus/ASCII serial devices to newer TCP/IP networked-baseddevices. The EKI-1221/1222/1224 feature two independent Ethernet ports and MAC addresses to provide redundancy and reliability. They provide a simple and cost-effective way tobring remote management and data accessibility to thousands of devices that cannot otherwise connect to a network. The EKI-1221/1222/1224 allow users to select client or server
operation mode for each serial port. In addition to allowing an Ethernet client to control serial servers, they also allow serial client to control Ethernet servers.

Specifications
Ethernet Communications
 Compatibility
 Speed No. of Ports Port Connector
 Protection

IEEE 802.3, IEEE 802.3u
10/100 Mbps
28-pin RJ45
Built-in 2.25 k VDC magnetic isolation

Serial Communications
 Port Type No. of Ports Port Connector
 Data Bits
 Stop Bits
 Parity Flow Control
 Baud Rate Serial Signals

 Protection

RS-232/422/485-2w/485-4w, software selectable(EKI-1224CI-CE supports RS-422/485 only)
EKI-1221: 1
EKI-1222: 2
EKI-1224: 4
DB9 male
EKI-1221CI-DE; EKI-1222CI-DE also provide Terminal Block5, 6, 7, 8
1, 1.5, 2None, Odd, Even, Space, Mark
XON/XOFF, RTS/CTS
50 bps ~ 921.6 kbps, any baud rate setting[CE Version]
RS-232: TxD, RxD, CTS, RTS, DCD, RI, GND, DTR, DSR
RS-422: TxD+, TxD-, RxD+, RxD-, GND
RS-485 2-wire: Data+, Data-, GND
RS-485 4-wire: TxD+, TxD-, RxD+, RxD- GND (not include CI models)[DE Version]
DB9:
RS-232 isolation: TxD, RxD, CTS, RTS, GND
RS-232: TxD, RxD, CTS, RTS, DCD, RI, GND, DTR, DSR
Terminal Block ( From top to bottom):RS-422: GND, RxD-, RxD+, TxD+, TxDRS485 2-wire: GND, NC, NC, TxD+, TxDRS485 4-wire: GND, RxD-, RxD+, TxD+, TxD15 KV ESD for all signals

Software OS Support
 Utility Software Operation Modes Configuration
 Protocols

Windows XP/7/8.1/10, Windows Server 2003/2008/2012/2016/2019,and Linux
Advantech EKI Device Configuration Utility
Modbus RTU Client/Server mode
Modbus ASCII Client/Server mode
Windows Utility, Telnet Console, Web Browser
ICMP, IP, TCP, UDP, BOOTP, DHCP, Auto IP, HTTP, DNS, SMTP, ARP,NTPGeneral LED Indicators
 Reboot Trigger

System: Power, System Status
LAN: Speed, Link/Active
Serial: Tx, Rx
Built-in WDT (watchdog timer)

Mechanics
 Dimensions (W x H x D) Enclosure Mounting Weight IP Rating

EKI-1221/I-CE; EKI-1221CI-DE; EKI-1222/I-CE;
EKI-1222CI-DE: 30 x 140 x 95 mm (1.18" x 5.51" x 3.74")
EKI-1224/CI/I-CE: 42 x 140 x 95 mm (1.65" x 5.51" x 3.74")
Metal with solid mounting hardware
DIN-rail, Wall
EKI-1221: 0.472 Kg
EKI-1222: 0.48 Kg
EKI-1224: 0.555 Kg
IP30Power Requirements Power Input
 Power Connector Power Consumption

12 ~ 48 VDC, redundant dual inputs
Terminal block
EKI-1221: 3.2 W
EKI-1222: 3.2 W
EKI-1224: 4.1 W

Environment Operating Temperature Storage Temperature Operating Humidity

EKI-1221/EKI-1222/EKI-1224: -10 ~ 60 °C (14 ~ 140 °F)'CI & I' models: -40 ~ 80 °C (-40 ~ 176 °F)-40 ~ 85 °C (-40 ~ 185 °F)
10 ~ 95% RH

Regulatory Approvals
 EMC
 Hazardous location

CE, FCC Part 15 Subpart B (Class A)
UL/cUL (Class I, Division 2, Groups A, B, C and D),
ATEX (Zone 2 Ex nA nC IIC T4 Gc)

Port to Port Isolation ('CI' models) Serial to Ethernet
 Serial to Power Ethernet to Power

2 kV
2 kV
1.5 kV

Industrial Wireless and Protocol Gateway Solutions
All product specifications are subject to change without notice.

Last updated: 15-Aug-2023

EKI-1221/CI/I
EKI-1222/CI/I
EKI-1224/CI/I
Dimensions

Unit: mm

140 [5.512]

47.05[1.852]47.95[1.888]68[2.677]140 [5.512]

39[1.535]

EKI-1221149.80 [5.898]

95 [3.740]

104 [4.094]

30 [1.181]

Panel Cut-out Dimensions: 95 x 140 x 30 mm (3.74" x 5.512" x 1.181")
95 [3.740]
95 [3.740]

EKI-1221CI-DE

104 [4.094]
104 [4.094]

149.80149.80[5.898]149.80[5.898][5.898]47.95 47.95
47.95
47.05 47.05
47.05[1.888][1.888][1.888][1.852][1.852][1.852]140 [5.512][5.512]140140[5.512]140 [5.512][5.512]140140[5.512]68683939
68
39[2.677][2.677][2.677][1.535][1.535][1.535]95 [3.740]

30 [1.181]
30 [1.181][4.094]30 [1.181]
Panel Cut-out Dimensions: 95 x104
140x 30 mm (3.74" x 5.512"x 1.181")
104 [4.094]
95 [3.740]
30.50 40
[1.201]95[1.575][3.740]104 [4.094]

149.80[5.898][5.898]149.80140 [5.512]

68[2.677]42 [1.654]

47.95 47.05
47.05
47.95
[1.888] [1.852][1.852][1.888]140[5.512][5.512]
140

42 [1.654]

9.80[0.386]33
35[1.299] [1.378]
15[0.591]39[1.535]11.40 [0.449]

20.53 [0.808]

EKI-1222

95 [3.740]

30 [1.181]

104 [4.094]
95 [3.740]
30.50 40
[1.201] [1.575]

149.80 [5.898]

47.05[1.852]42 [1.654]

47.95[1.888]42 [1.654]

9.80[0.386]33
35[1.299] [1.378]
15[0.591]

140 [5.512]

11.40 [0.449]

20.53 [0.808]

Panel Cut-out Dimensions: 95 x 140 x 30 mm (3.74" x 5.512" x 1.181")

Online Download www.advantech.com/products

149.80 [5.898]

140 [5.512]

47.05[1.852]47.95[1.888]68[2.677]140 [5.512]

39[1.535]95 [3.740]

104 [4.094]

Dimensions
EKI-1222CI-DE

EKI-1221/CI/I
EKI-1222/CI/I
EKI-1224/CI/I

30 [1.181]

Unit: mm

149.80[5.898][5.898]149.8047.05
47.05[1.852][1.852]140[5.512][5.512]
140
47.95
47.95
[1.888][1.888]68
68[2.677][2.677]140[5.512][5.512]140

39
39[1.535][1.535]95
95[3.740][3.740]104
104[4.094][4.094]30
30[1.181][1.181]Panel Cut-out Dimensions: 95 x 140 x 30 mm (3.74" x 5.512" x 1.181")

47.95[1.888]47.05[1.852]

42 [1.654]

149.80 [5.898]

42 [1.654]

9.80[0.386]33
35[1.299] [1.378]
15[0.591]104 [4.094]95 [3.740]
30.50 40
[1.201] [1.575]

140 [5.512]

11.40 [0.449]

20.53 [0.808]

EKI-1224

95 [3.740]

Panel Cut-out Dimensions: 95 x 140 x 42 mm (3.74" x 5.512" x 1.654")

Ordering Information
 EKI-1221-CE
 EKI-1222-CE
 EKI-1224-CE
 EKI-1221I-CE
 EKI-1222I-CE
 EKI-1224I-CE

1-port RS-232/422/485 Modbus Gateway
2-port RS-232/422/485 Modbus Gateway
4-port RS-232/422/485 Modbus Gateway
1-port RS-232/422/485 Modbus Gateway with Wide
Operating Temperature
2-port RS-232/422/485 Modbus Gateway with Wide
Operating Temperature
4-port RS-232/422/485 Modbus Gateway with Wide
Operating Temperature

 EKI-1221CI-DE
 EKI-1222CI-DE
 EKI-1224CI-CE
 OPT1-DB9

Industrial Wireless and Protocol Gateway Solutions

1-port RS-232/422/485-2w/485-4w Modbus Gateway
with Wide operation temperature and isolation
2-port RS-232/422/485-2w/485-4w Modbus Gateway
with Wide operation temperature and isolation
4-port RS-422/485 Modbus Gateway with Wide
Operation Temperature and Isolation
D-Sub9 to Terminal Converter