{"product_id":"beckhoff-ip1502-b518-fieldbus-box-2-channel-digital-input-counter-module","title":"Beckhoff IP1502-B518 Fieldbus Box 2-Channel Digital Input Counter Module","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eDecentralized high-speed pulse processing in environmental zones without protective enclosures is managed directly by the \u003cstrong\u003eBeckhoff IP1502-B518\u003c\/strong\u003e, a specialized 2-channel digital counter module designed for native \u003cstrong\u003eCANopen\u003c\/strong\u003e integration. This IP67-rated Fieldbus Box coordinates raw sensor pulse signals up to \u003cstrong\u003e100 kHz\u003c\/strong\u003e, utilizing 32-bit counter depths to support precise positioning, flow metering, and velocity calculation directly on the machinery. Encased in a rugged polyamide housing, the device features an integrated T-connector for direct bus loop-through, minimizing field cabling topology and eliminating the need for centralized DIN-rail cabinets.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; padding-left: 1.5rem; margin-bottom: 1.5rem;\"\u003e\n  \u003cli\u003eDual independent 32-bit counter channels accommodating inputs up to 100 kHz.\u003c\/li\u003e\n  \u003cli\u003eIntegrated CANopen fieldbus interface with automatic baud rate detection up to 1 Mbaud.\u003c\/li\u003e\n  \u003cli\u003eRobust IP65, IP66, and IP67 protection classes for resistance against water jets and complete immersion.\u003c\/li\u003e\n  \u003cli\u003eDirect machine mounting with standard XXL housing form-factor and M12 signal connectors.\u003c\/li\u003e\n  \u003cli\u003eBuilt-in M12 T-connector configuration for streamlined fieldbus daisy-chaining.\u003c\/li\u003e\n  \u003cli\u003eDedicated gate inputs and directional up\/down hardware switches per channel.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; padding-left: 1.5rem; margin-bottom: 1.5rem;\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDecentralized Flow Metering:\u003c\/strong\u003e Interfacing with high-frequency turbine and positive displacement pulse flow meters in fluid processing plants.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConveyor Line Positioning:\u003c\/strong\u003e Directly reading rotary encoder pulses for material tracking on extended logistics conveyors.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRotational Speed Monitoring:\u003c\/strong\u003e Evaluating fan, pump, or motor shaft speeds using proximity sensors in heavy industrial washdown environments.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackaging Machinery:\u003c\/strong\u003e On-machine high-speed indexing and registration mark detection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications Table\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; font-size: 0.9rem;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"border-bottom: 2px solid #1a365d; text-align: left;\"\u003e\n        \u003cth style=\"padding: 0.75rem; font-weight: bold;\"\u003eSpecification Parameter\u003c\/th\u003e\n        \u003cth style=\"padding: 0.75rem; font-weight: bold;\"\u003eTechnical Value \/ Rating\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: 0.75rem; font-weight: bold;\"\u003eManufacturer\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eBeckhoff\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eModel \/ Part Number\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eIP1502-B518\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eProtocol \/ Interface\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eCANopen\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eData Transfer Rates\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e10 kbaud to 1 Mbaud (Automatic Detection)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eNumber of Inputs\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e2 counter inputs + 2 gate inputs + 2 up\/down switches\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eCounter Depth\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e32-bit (per channel)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eCounting Frequency\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e100 kHz maximum (2 kHz for up\/down switching)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eNominal Input Voltage\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e24 V DC (-15% \/ +20%)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eInput Signal Voltages\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e\"0\" Signal: -3 to +5 V DC | \"1\" Signal: 11 to 30 V DC\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eOutputs\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e2 x 24 V DC, 0.5 A (individually short-circuit proof)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eSensor Supply Current\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eMax. 0.5 A total, short-circuit proof\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eCurrent Consumption\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e45 mA from US (excluding sensor current)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eElectrical Isolation\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eControl voltage \/ fieldbus: 500 V\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eSignal \/ Fieldbus Connectors\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eSignal: M12 screw type | Bus: 1 x M12 plug (5-pin), 1 x M12 socket (5-pin)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003ePower Supply Connectors\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eFeed: 1 x M8 male (4-pin) | Downstream: 1 x M8 female (4-pin)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eOperating \/ Storage Temp.\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e0 to +55 degC \/ -25 to +85 degC\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eProtection Class\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eIP65 \/ IP66 \/ IP67 (conforms to EN 60529)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eHousing Dimensions\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e30 mm x 210 mm x 26.5 mm (XXL Housing, Polyamide PA6)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eShipping Weight (Calculated)\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e2.0 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; font-size: 0.9rem;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"border-bottom: 2px solid #1a365d; text-align: left;\"\u003e\n        \u003cth style=\"padding: 0.75rem; font-weight: bold;\"\u003eConnector \/ Pin\u003c\/th\u003e\n        \u003cth style=\"padding: 0.75rem; font-weight: bold;\"\u003eSignal Assignment\u003c\/th\u003e\n        \u003cth style=\"padding: 0.75rem; font-weight: bold;\"\u003eFunctional Description\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: 0.75rem; font-weight: bold;\"\u003eM12 Bus Pin 1\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eShield\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eElectromagnetic compatibility screen connection\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eM12 Bus Pin 2\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eV+\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eExternal CAN transceiver power supply (24 V DC)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eM12 Bus Pin 3\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eCAN_GND\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eReference ground for CAN communications\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eM12 Bus Pin 4\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eCAN_H\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eCAN high signal line\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eM12 Bus Pin 5\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eCAN_L\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eCAN low signal line\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eM8 Power Feed Pin 1\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eUS\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eControl voltage feed (24 V DC for internal electronics)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eM8 Power Feed Pin 2\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eUP\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eLoad voltage feed (24 V DC for auxiliary sensor outputs)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eM8 Power Feed Pin 3\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eGNDS\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eGround reference for control voltage\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eM8 Power Feed Pin 4\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eGNDP\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eGround reference for load voltage\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\n\u003ch4\u003eAlternative Models \u0026amp; Compatibility\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eThe IP1502-B518 is configured specifically for \u003cstrong\u003eCANopen\u003c\/strong\u003e physical bus networks. If upgrading a field node from a standard digital input block, note that the 80-bit process image (2 x 32-bit data and 2 x 8-bit control\/status registers) requires specific configuration in your master controller PLC's network manager. For applications requiring Profibus, EtherCAT, or DeviceNet, alternative fieldbus boxes such as the IP1502-B318 or IE1502 series must be selected, as the physical interface layer is fixed and cannot be converted via firmware.\u003c\/p\u003e\n\n\u003ch4\u003eApplication Pitfalls \u0026amp; Engineering Notes\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eWhen utilizing the direction-switching functionality, keep the maximum frequency of the up\/down control signal below \u003cstrong\u003e2 kHz\u003c\/strong\u003e. Input pulses on the primary counter channels that arrive during transitions of the up\/down switch near this limit can result in registration delays. Ensure that sensor power requirements do not exceed the module's 0.5 A cumulative ceiling; overloading this line will trigger the internal short-circuit protection, dropping auxiliary power to all connected sensors simultaneously.\u003c\/p\u003e\n\n\u003ch4\u003eCommissioning \u0026amp; Wiring Tips\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eBecause CANopen communications are sensitive to signal reflection, a physical \u003cstrong\u003e120 Ohm\u003c\/strong\u003e terminal resistor must be installed at the M12 socket of the very last physical node in the chain. When running high-frequency 100 kHz pulse inputs, always utilize double-shielded twisted-pair (S\/FTP) cabling for the sensor connections. Tie the shield to the M12 metal housing connectors to divert high-frequency inductive noise directly to the machine chassis grounding points.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\n\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 De-energize all primary control and load power supplies (US and UP) before connecting or disconnecting the M8 and M12 field cables. Hot-plugging industrial connectors in wet, damp, or dusty operational fields can cause transient voltage spikes, localized arcing, or catastrophic damage to the internal CANopen transceivers.\n\u003c\/div\u003e\n\n\u003cdiv style=\"margin-bottom: 1.5rem;\"\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; margin-bottom: 1rem;\"\u003e\n    \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; width: 1.75rem; height: 1.75rem; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; margin-right: 0.75rem; flex-shrink: 0;\"\u003e1\u003c\/div\u003e\n    \u003cdiv style=\"color: #2d3748; padding-top: 0.1rem;\"\u003eSecure the polyamide housing directly to the machine frame or mounting plate using two M3 bolts through the integrated 3.5 mm diameter mounting channels. Ensure the mounting surface is flat to avoid structural strain on the housing.\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; margin-bottom: 1rem;\"\u003e\n    \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; width: 1.75rem; height: 1.75rem; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; margin-right: 0.75rem; flex-shrink: 0;\"\u003e2\u003c\/div\u003e\n    \u003cdiv style=\"color: #2d3748; padding-top: 0.1rem;\"\u003eThread the M12 CANopen bus-in and bus-out lines into the integrated T-connector ports. Tighten the knurled metal collars hand-tight, then apply 0.6 Nm of torque using an industrial torque wrench to guarantee the IP67 seal integrity.\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; margin-bottom: 1rem;\"\u003e\n    \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; width: 1.75rem; height: 1.75rem; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; margin-right: 0.75rem; flex-shrink: 0;\"\u003e3\u003c\/div\u003e\n    \u003cdiv style=\"color: #2d3748; padding-top: 0.1rem;\"\u003eConnect the M8 power distribution cables to the feed socket, routing downstream power to adjacent fieldbus modules as needed using the 4-pin downstream port.\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start;\"\u003e\n    \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; width: 1.75rem; height: 1.75rem; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; margin-right: 0.75rem; flex-shrink: 0;\"\u003e4\u003c\/div\u003e\n    \u003cdiv style=\"color: #2d3748; padding-top: 0.1rem;\"\u003eConfigure the node address (MAC ID) and baud rate parameters within your Beckhoff TwinCAT or third-party CANopen master software system to finalize fieldbus commissioning.\u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"BECKHOFF","offers":[{"title":"Default Title","offer_id":53106453250411,"sku":"IP1502-B518","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/ip1502-b518-yk0p2yisf3d.png?v=1776244906","url":"https:\/\/www.plcprotech.com\/de\/products\/beckhoff-ip1502-b518-fieldbus-box-2-channel-digital-input-counter-module","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}