DM43 – Modbus RTU Digital I/O over RS485/USB

4 x DI, 3 x DO
RS485 + USB (VCOM) interface control
(more…)

EM731 – Ethernet Modbus TCP to Modbus RTU/ASCII

1 x RS485/RS422
1 x RS232
Modbus TCP to RTU/ASCII
(more…)

PMD388 – Digital I/O Modbus TCP/RTU Gateway

8x DI, 8x DO, Modbus TCP/RTU
(more…)

PMD384 – Digital I/O Modbus TCP/RTU Gateway

8x DI, 4x DO, Modbus TCP/RTU
(more…)

PM230 – Modbus TCP to RTU/ASCII

1 x RS232/RS485/RS422
Modbus TCP to RTU/ASCII
(more…)

PM130IS – Ethernet Modbus TCP to RTU/ASCII with Isolation

1 x RS232/422/485, Isolation, TCP to RTU/ASCII (more…)

PM734 – Ethernet Modbus TCP to 4 Serial Ports Modbus RTU/ASCII

Discontinued
4 x RS232/422/485, TCP to RTU/ASCII, RTU/ASCII to TCP (more…)

PM738 – Ethernet Modbus TCP to 8 Serial Ports Modbus RTU/ASCII

Discontinued
8 x RS232/422/485, TCP to RTU/ASCII, RTU/ASCII to TCP (more…)

AM140 – Modbus RTU to Analog Input

4 analog inputs selective of 4~20mA and 0~10V
(more…)

AM141 – Modbus TCP to Analog Input & RTU

4 channels selectable from 4~20mA and 0~10V
(more…)

EM730 – Modbus TCP to Modbus RTU/ASCII

Discontinued
1 x RS232, 1 x RS422/485, TCP to RTU/ASCII
(more…)

Comparison of Modbus (MQTT) Gateways