{"product_id":"allen-bradley-1746-hsce2-slc-500-high-speed-counter-module","title":"Allen-Bradley 1746-HSCE2 SLC 500 High-Speed Counter Module","description":"\u003ch1\u003eAllen-Bradley 1746-HSCE2 SLC 500 High-Speed Counter Module\u003c\/h1\u003e\n\u003cp\u003eConfigured for quadrature pulse acquisition and bidirectional counting in SLC 500 backplane systems, the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAllen-Bradley 1746-HSCE2\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e(\u003cstrong\u003e1746-HSCE2 high-speed counter module\u003c\/strong\u003e) provides direct physical\/electrical execution for multi-channel high-frequency signal capture using differential A\/B\/Z encoder inputs and discrete sourcing outputs across 1746 chassis platforms.\u003c\/p\u003e\n\u003ch3\u003eSuffix Breakdown \u0026amp; Model Matrix\u003c\/h3\u003e\n\u003cp\u003eThe 1746-HSCE2 is a fixed-architecture high-speed counter module within the SLC 500 I\/O family. No functional sub-variants exist under the catalog number. Input groups are pre-defined as two quadrature channels with auxiliary index inputs and fixed output structure mapped to internal counter registers.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003cth class=\"last:pe-10\"\u003eParameter\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e1746-HSCE2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.23 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e1 slot chassis module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003eNot specified in provided data\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e5 VDC backplane: 250 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eHigh-Speed Counter Input Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInputs\u003c\/td\u003e\n\u003ctd\u003e±A1, ±B1, ±Z1, ±A2, ±B2, ±Z2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage Range\u003c\/td\u003e\n\u003ctd\u003e4.2 VDC to 12 VDC; 10 VDC to 30 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Input Voltage\u003c\/td\u003e\n\u003ctd\u003e5 VDC \/ 24 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Input Frequency\u003c\/td\u003e\n\u003ctd\u003e1 MHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMin Pulse Width\u003c\/td\u003e\n\u003ctd\u003e475 ns\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMin Phase Separation\u003c\/td\u003e\n\u003ctd\u003e200 ns\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutputs\u003c\/td\u003e\n\u003ctd\u003e8 (4 real sourcing + 4 virtual)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Voltage Range\u003c\/td\u003e\n\u003ctd\u003e10–30 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUpdate Time\u003c\/td\u003e\n\u003ctd\u003e1.5 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStep Response\u003c\/td\u003e\n\u003ctd\u003e100 ms input \/ 2.5 ms output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Interface\u003c\/td\u003e\n\u003ctd\u003eSLC 500 1746 bus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eI\/O Connector\u003c\/td\u003e\n\u003ctd\u003e1746-RT25G\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eHigh-Speed Quadrature Counting and Pulse Train Processing Architecture\u003c\/h3\u003e\n\u003cp\u003eThe module processes encoder-derived quadrature signals through dedicated high-speed interrupt logic independent of SLC processor scan timing. A\/B phase decoding and Z-index referencing are handled at hardware level with deterministic edge detection down to sub-microsecond pulse resolution.\u003c\/p\u003e\n\u003cp\u003eBidirectional counting logic resolves direction state from phase displacement between A and B channels, while Z input defines absolute position reset reference. Input conditioning supports both TTL-level and higher-voltage industrial signals through dual-range input thresholds (4.2–12 VDC and 10–30 VDC).\u003c\/p\u003e\n\u003cp\u003eOutput structure includes four physical sourcing outputs and four internal virtual outputs mapped to counter events, allowing direct hardware-triggered response based on threshold, overflow, or preset comparison conditions.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions (FAQ)\u003c\/h3\u003e\n\u003cp\u003eQ: Can the module count both incremental and absolute encoder signals simultaneously?\u003cbr\u003eA: Yes. Two independent quadrature input groups support simultaneous A\/B\/Z decoding, each processed through separate hardware counters.\u003c\/p\u003e\n\u003cp\u003eQ: Does input frequency processing depend on SLC 500 scan time?\u003cbr\u003eA: No. Pulse capture is handled in dedicated hardware logic with 1 MHz maximum input frequency independent of CPU scan cycle.\u003c\/p\u003e\n\u003cp\u003eQ: What determines output switching latency for counter events?\u003cbr\u003eA: Output update is governed by the 1.5 ms module update cycle and internal event comparison logic, not ladder scan execution timing.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eSystem power must be removed before insertion to prevent backplane bus timing corruption and input latch instability. The module must be fully seated into a single SLC 500 chassis slot with correct connector alignment to the 1746 backplane interface.\u003c\/p\u003e\n\u003cp\u003eEncoder wiring for A\/B\/Z channels should use shielded twisted-pair cabling with shield termination at one end only inside the control cabinet. Signal cables must be routed away from VFD output conductors and high dV\/dt switching lines to avoid pulse distortion at high frequency.\u003c\/p\u003e\n\u003cp\u003eOutput wiring (10–30 VDC sourcing) requires proper load matching and shared reference grounding within the same cabinet potential to ensure stable switching behavior during counter event execution.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":43498968645722,"sku":"1746-HSCE2","price":123.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/1746-HSCE22.jpg?v=1781519870","url":"https:\/\/www.plcmasters.com\/products\/allen-bradley-1746-hsce2-slc-500-high-speed-counter-module","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}