tGW-712i Modbus TCP to RTU/ASCII Gateway with PoE and 1-port Isolated RS-232

The tGW-712 CR bridges Modbus TCP hosts and serial Modbus RTU/ASCII devices, so a supervisory system on an Ethernet network can reach equipment that only has a serial interface. This variant provides one 5-wire RS-232 port on a male DB-9 connector, which keeps wiring simple for point-to-point connections.Beyond simple protocol conversion, the gateway can be configured as a pair-connection, serial-bridge or serial-tunnel device, routing data over TCP/IP between two serial Modbus devices. A read-cache stores previous requests and responses in the module's memory buffer, returning repeated answers immediately to reduce traffic on the serial side and speed up TCP responses.Power can be supplied over Ethernet using IEEE 802.3af Class 1 PoE from a compatible switch, or from a +12 ~ 48 VDC terminal block where no PoE is available. The unit is designed for low power consumption, rated at 0.07 A @ 24 VDC, and mounts on a DIN rail in a plastic housing.ApplicationsFactory automationBuilding and home automationRemote diagnosis and managementSolar monitoring

tGW-715 CR bridges Modbus TCP/UDP hosts on an Ethernet network with serial Modbus RTU or ASCII devices on RS-422/485. It lets a supervisory system reach field devices without being limited by the cable lengths of legacy serial links, and it can act as master or slave on either side of the conversion.The gateway can also be used in pair-connection, serial-bridge or serial-tunnel arrangements, routing serial Modbus data over TCP/IP between two RTU or ASCII devices. A read-cache stores previous requests and responses, so repeated queries from several HMI or SCADA masters to the same slave are answered quickly, reducing traffic on the RS-485 bus.Power can be supplied over Ethernet via IEEE 802.3af Class 1 PoE, or from a +12 ~ 48 VDC terminal block input where no PoE switch is available. The listing includes a DC-jack to 2-wire power cable, 0.3 M. The unit is housed in a plastic case for DIN-rail mounting and is rated for -25 ~ +75 °C operation.ApplicationsFactory automationBuilding and home automationRemote diagnosis and managementSolar monitoring

The tGW-715-UL bridges Ethernet-based Modbus TCP masters and serial Modbus RTU/ASCII devices on a single 1-port RS-422/485 interface. It allows legacy serial equipment to be reached over a TCP/IP network, removing the cable-length restrictions of a direct serial connection.Power can be supplied over Ethernet using IEEE 802.3af Class 1 PoE from a compatible switch, or from a +12 ~ 48 VDC terminal block where no PoE switch is available. A read-cache stores previous requests and responses, so repeated polls from several masters to the same slave can be answered quickly, reducing traffic on the RS-485 bus.This ordering code uses the standard, non-isolated RS-422/485 port with an operating range of -25 ~ +70 °C. Choose the tGW-715i-UL variant if the serial port requires 3000 VDC signal isolation, or the -UTA version for operation down to -40 °C.ApplicationsFactory automationBuilding and home automationRemote diagnosis and managementSolar monitoring

The tGW-715-UL-UTA CR is a compact gateway that lets a Modbus TCP host communicate with serial Modbus RTU or ASCII devices over Ethernet. Because the serial side is carried over TCP/IP, cable length limits of conventional RS-422/485 wiring no longer restrict where field devices can be placed.This variant is rated for an operating temperature of -40 ~ +70 °C and uses conformal coating for resistance to moisture and salt spray, which suits outdoor-adjacent cabinets and high-humidity sites. It can be powered from a PoE switch (IEEE 802.3af, Class 1) or from a +12 ~ 48 VDC terminal block, and it mounts on DIN-rail.Read-caching stores recent requests and responses, so repeated queries from several SCADA or HMI masters to the same slave are answered faster and place less load on the RS-485 bus. The -CR ordering code includes a DC-jack to 2-wire power cable, 0.3 M (CA-002-UL).ApplicationsFactory automationBuilding and home automationRemote diagnosis and managementSolar monitoring