PET-2251 PoE I/O Module, 16-ch DI with 2-port Ethernet Switch

PET-2251-32 is an Ethernet I/O module that gathers 32 Wet/Dry digital inputs, and each channel can also be used as a 32-bit counter with a maximum count of 4,294,967,295. Its built-in 2-port switch with LAN bypass lets you chain devices along the network, which reduces cabling and switch hardware in distributed installations.For control tasks, the module supports I/O Pair Connection, so local DI status can be pushed to remote DO channels over Ethernet using Modbus TCP. It also works as an MQTT publisher and subscriber, publishing I/O status as topics and reconnecting to the broker automatically after a dropout. SNMP V2c allows module and I/O data to be read by network management software, and Trap messages can alert administrators when inputs change or the unit restarts.Electrical robustness is covered by 3000 V DC I/O isolation and EMS protection against EFT, ESD and surge events. The module is powered over PoE (IEEE 802.3af, Class 2) or from a +10 ~ +48 VDC terminal block, and is rated for -25 ~ +75 °C operation on a DIN rail.ApplicationsFactory AutomationMachine AutomationBuilding AutomationRemote Diagnosis & MaintenanceTesting Equipment

The ET-2251-32 is an Ethernet remote I/O module that brings 32 Wet/Dry digital inputs onto an Ethernet network. Each channel can also operate as a 32-bit counter, with a maximum count of 4,294,967,295, so it suits pulse counting alongside status monitoring.A built-in 2-port 10/100 Base-Tx switch with LAN bypass allows modules to be daisy-chained along a line, reducing the switching hardware and cabling needed for distributed inputs. Configuration is handled through the built-in web server, and I/O pair connections can push local DI states to remote DO channels over Modbus TCP.For integration with higher-level systems, the module acts as an MQTT publisher and subscriber and can report I/O status through SNMP V2c, with Trap messages sent on input changes or restarts. EMS protection and 3000 VDC I/O isolation support operation in electrically noisy plant environments.ApplicationsFactory automationMachine automationBuilding automationRemote diagnosis and maintenanceTesting equipment

ET-2251 CR is an Ethernet I/O module with 16 digital input channels that accept both wet and dry contacts. Each channel can also operate as a 32-bit counter, with a maximum count of 4,294,967,295, so the module suits pulse counting and status monitoring alongside simple switch sensing.The built-in 2-port Ethernet switch with LAN bypass lets you daisy-chain modules along a network line, which reduces the number of switches and cabling needed. Configuration is handled through the built-in web server, and I/O Pair Connection (Push and Pull) allows local DI data to be written to remote DO channels via Modbus TCP.For communication, the module supports Modbus TCP/UDP, MQTT as both publisher and subscriber, and SNMP V2c with optional Trap messages for I/O or restart events. Its EMS protection and 3000 VDC I/O isolation support use in electrically noisy industrial environments.ApplicationsFactory AutomationMachine AutomationBuilding AutomationRemote Diagnosis & MaintenanceTesting Equipment

The PET-2252 is a PoE-powered I/O module in which each of its 16 channels can be configured as either a digital input (sink) or a digital output (source). Each digital output channel can switch a load of up to 450 mA, which makes the module suitable for driving industrial loads directly from the Ethernet connection.Two switched RJ-45 ports allow the module to be daisy-chained along a line of devices, reducing the need for separate switches and cabling. A LAN bypass function and dual-watchdog support help maintain communication and control in demanding installations. Digital outputs can be given programmable power-on and safe values, and the module provides 3000 VDC I/O isolation together with EMS (EFT, ESD and surge) protection.For distributed control, the module supports I/O pair connections, so local inputs can be pushed to remote outputs over Ethernet via Modbus TCP, or remote inputs can be pulled to local outputs. It also works as an MQTT publisher and subscriber and offers SNMP V2c monitoring with trap messages for I/O changes and restarts. Dual +10 to +48 V DC power inputs provide redundancy.ApplicationsFactory AutomationMachine AutomationBuilding AutomationRemote Diagnosis & MaintenanceTesting Equipment