{"product_id":"prosoft-plx31-pnd-mbs4-profinet-device-to-modbus-serial-gateway","title":"ProSoft PLX31-PND-MBS4 PROFINET Device to Modbus Serial Gateway","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eInterfacing high-speed Ethernet-based PROFINET networks with legacy serial field devices is managed efficiently by the \u003cstrong\u003eProSoft PLX31-PND-MBS4\u003c\/strong\u003e, a specialized four-port communication gateway. This hardware facilitates bidirectional data exchange between controllers on a PROFINET network and Modbus serial devices. Featuring four independent, fully isolated serial ports, the gateway acts as a \u003cstrong\u003ePROFINET Class A Device\u003c\/strong\u003e, supporting substantial data transfer volumes of up to 1440 bytes input and 1440 bytes output. Its robust, DIN-rail-mountable industrial enclosure and wide temperature rating make it suitable for continuous service in harsh control environments.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; margin-bottom: 1.5rem;\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFour Active Serial Ports:\u003c\/strong\u003e Each port is independently configurable to support Modbus RTU or Modbus ASCII protocol architectures.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlexible Mode Settings:\u003c\/strong\u003e Supports Modbus Master or Modbus Slave operational modes per port, enabling simultaneous polling of sensors and serving data to multiple hosts.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh Data Throughput:\u003c\/strong\u003e Handles up to 1440 bytes of cyclic input data and 1440 bytes of cyclic output data for large-scale telemetry acquisition.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAcyclic Data Integration:\u003c\/strong\u003e Supports both Cyclic Real-time (RT) and Acyclic Data exchanges to pass diagnostic and acyclic parameters smoothly.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eElectrical Isolation:\u003c\/strong\u003e Integrated Ethernet port features 1500 Vrms isolation to protect the internal processing logic from electrical surges and ground loops.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBroadcast Storm Resiliency:\u003c\/strong\u003e Hardened against industrial network traffic issues with dynamic broadcast storm limits of up to 5000 ARP frames-per-second.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; margin-bottom: 1.5rem;\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSubstation Telemetry:\u003c\/strong\u003e Connecting Modbus-based power quality analyzers, multifunction meters, and protection relays to a central PROFINET PLC.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProcess Skid Integration:\u003c\/strong\u003e Linking legacy Modbus-enabled flow computers, valve manifolds, and temperature controllers to modern DCS platforms.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInfrastructure Monitoring:\u003c\/strong\u003e Interfacing remote pump controllers, gas detection systems, and variable frequency drives over serial lines into municipal water or oil and gas control networks.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; width: 100%; margin-bottom: 1.5rem;\"\u003e\n  \u003ctable style=\"border-collapse: collapse; width: 100%; color: #2d3748;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"border-bottom: 2px solid #1a365d;\"\u003e\n        \u003cth style=\"padding: 10px; text-align: left; font-weight: bold;\"\u003eParameter\u003c\/th\u003e\n        \u003cth style=\"padding: 10px; text-align: left; font-weight: bold;\"\u003eValue \/ Specification\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eManufacturer\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eProSoft Technology\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eModel Reference\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003ePLX31-PND-MBS4\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003ePROFINET I\/O Capacity\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e1440 bytes Input, 1440 bytes Output\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003ePROFINET Driver Type\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eClass A Device\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eNumber of Serial Ports\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e4 isolated ports\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eModbus Command Lists\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eUp to 100 commands per Master port (configurable Function Codes)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eNominal Supply Voltage\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e24 VDC (10 to 36 VDC permitted limits)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eCurrent Consumption\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e300 mA at 24 VDC nominal (610 mA maximum)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eOperating Temperature\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e-25 degC to 70 degC (-13 degF to 158 degF)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eStorage Temperature\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e-40 degC to 80 degC (-40 degF to 176 degF)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eRelative Humidity\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e5% to 95% non-condensing RH\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eEthernet Isolation\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e1500 Vrms, 50 to 60 Hz for 60 seconds (IEC 60950)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eMechanical Dimensions\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e13.67 x 5.05 x 11.13 cm (H x W x D)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eShipping Weight\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e1.50 kg\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eConnections and Interfaces\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; width: 100%; margin-bottom: 1.5rem;\"\u003e\n  \u003ctable style=\"border-collapse: collapse; width: 100%; color: #2d3748;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"border-bottom: 2px solid #1a365d;\"\u003e\n        \u003cth style=\"padding: 10px; text-align: left; font-weight: bold;\"\u003ePort \/ Terminal\u003c\/th\u003e\n        \u003cth style=\"padding: 10px; text-align: left; font-weight: bold;\"\u003eConnector Type\u003c\/th\u003e\n        \u003cth style=\"padding: 10px; text-align: left; font-weight: bold;\"\u003eSignal Assignment\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eEthernet Port\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eRJ45\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003ePROFINET Network \/ Config; 10\/100 Mbps Base-TX\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eSerial Ports 1 - 4\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eDB9 Male (with terminal adapters)\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eRS-232, RS-422, or RS-485 configurable modes\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003ePower Input\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e3-Pin J180 Screw Terminal Block\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003ePositive (V+), Negative (V-), Protective Ground (GND)\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eEmpirical Engineering Insights\u003c\/h3\u003e\n\u003ch4\u003eAlternative Models \u0026amp; Compatibility\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eThis unit replaces older multi-gateway systems that required separate PROFINET to Modbus RTU interface modules. By combining four distinct serial ports onto a single IP address, it decreases PROFINET node counts and simplifies PLC hardware configurations. Note that older configuration files from single-port models must have their register mappings offset properly to utilize the 4-port memory structure without overlap.\u003c\/p\u003e\n\n\u003ch4\u003eApplication Pitfalls \u0026amp; Engineering Notes\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eA common issue occurs when configuring multiple Modbus Master commands. If a slave device drops offline, the Modbus polling cycle can experience long timeouts, slowing down update speeds across that entire port. Set your Modbus timeouts and retry parameters precisely in ProSoft Configuration Builder (PCB) to prevent slow network refresh rates.\u003c\/p\u003e\n\n\u003ch4\u003eCommissioning \u0026amp; Wiring Tips\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eWhen utilizing RS-485 multidrop configurations, remember to terminate the physical bus. Use the provided DB9 to screw terminal adapters to install 120-ohm termination resistors across the TX\/RX+ and TX\/RX- lines at the end of each physical serial segment. Keep your signal ground reference tied to earth at only one single point to avoid destructive ground-loop noise.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003cdiv style=\"background-color: #fff5f5; border-left: 4px solid #c53030; padding: 1rem; margin-bottom: 1.5rem; color: #9b2c2c;\"\u003e\n  \u003cstrong\u003eCRITICAL WARNING:\u003c\/strong\u003e Prior to attempting hardware installation, servicing, or terminal wiring, ensure all 24 VDC incoming power sources are completely de-energized. Failure to follow industrial lock-out\/tag-out procedures can result in terminal damage, logic lockup, or control network dropouts.\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: flex; align-items: flex-start; margin-bottom: 1rem;\"\u003e\n  \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; margin-right: 12px;\"\u003e1\u003c\/div\u003e\n  \u003cdiv style=\"color: #2d3748; padding-top: 2px;\"\u003eMount the module firmly to a 35mm DIN rail with proper orientation, ensuring adequate air gap clearance around ventilation slots.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: flex; align-items: flex-start; margin-bottom: 1rem;\"\u003e\n  \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; margin-right: 12px;\"\u003e2\u003c\/div\u003e\n  \u003cdiv style=\"color: #2d3748; padding-top: 2px;\"\u003eConnect the protective earth ground wire to the designated grounding terminal, and then connect the 24 VDC power supply using the J180 plug.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: flex; align-items: flex-start; margin-bottom: 1rem;\"\u003e\n  \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; margin-right: 12px;\"\u003e3\u003c\/div\u003e\n  \u003cdiv style=\"color: #2d3748; padding-top: 2px;\"\u003eInsert the CAT5e\/CAT6 Ethernet cable into the isolated RJ45 port and wire your serial lines to the serial DB9 connectors using shielded cabling.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: flex; align-items: flex-start; margin-bottom: 1rem;\"\u003e\n  \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; margin-right: 12px;\"\u003e4\u003c\/div\u003e\n  \u003cdiv style=\"color: #2d3748; padding-top: 2px;\"\u003ePower up the system, launch ProSoft Configuration Builder to define your network settings, and assign register tables for your PROFINET master controller.\u003c\/div\u003e\n\u003c\/div\u003e","brand":"ProSoft","offers":[{"title":"Default Title","offer_id":53076255801707,"sku":"PLX31-PND-MBS4","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/PLX31-PND-MBS4-mlqgzeo4tyq.jpg?v=1775727288","url":"https:\/\/www.plcprotech.com\/fa\/products\/prosoft-plx31-pnd-mbs4-profinet-device-to-modbus-serial-gateway","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}