{"product_id":"1764-lsp-allen-bradley-processor-module-micrologix-1500","title":"1764-LSP Allen-Bradley Processor Module MicroLogix 1500","description":"\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1764-LSP\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e1764-LSP\/C\u003c\/strong\u003e Processor Module, executes ladder scan, I\/O ownership and local 1769 expansion-bus arbitration within a MicroLogix 1500 base unit.\u003c\/p\u003e\n\u003ch3\u003eCatalog Number And Variant Notes\u003c\/h3\u003e\n\u003cp\u003eThe base catalog number 1764-LSP denotes the standard MicroLogix 1500 processor. The suffix \"\/C\" in 1764-LSP\/C marks a later hardware\/series track; it does not convert the module into the high-performance 1764-LRP. The 1764-LRP adds a second configurable RS-232 channel, data log\/recipe memory and larger user program space. A 1764-LSP cannot be field-upgraded into an LRP by firmware alone; the channel hardware and memory map differ.\u003c\/p\u003e\n\u003ch3\u003eElectrical \u0026amp; Mechanical Data\u003c\/h3\u003e\n\u003cfigure\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\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\u003e1764-LSP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpare \/ Series Id\u003c\/td\u003e\n\u003ctd\u003e1764-LSP\/C\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\u003eUnited States or Korea, per supplied documentation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.2 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Dimensions\u003c\/td\u003e\n\u003ctd\u003e15.2 x 5.1 x 10.2 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUser Memory\u003c\/td\u003e\n\u003ctd\u003e7.65K user words, user-configurable program\/data split\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane \/ Bus Draw\u003c\/td\u003e\n\u003ctd\u003e300 mA at 5 VDC, processor-local expansion bus load\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcessor Class\u003c\/td\u003e\n\u003ctd\u003eMicroLogix 1500 Standard Processor Unit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStatus Ports\u003c\/td\u003e\n\u003ctd\u003eRun\/Remote\/Program key switch, status LEDs, single local comm path on base\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to 60 deg C, typical for MicroLogix 1500 processor class\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiscontinuation\u003c\/td\u003e\n\u003ctd\u003eObsolete from Rockwell product line, Jun 2017\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eMicroLogix Local Expansion Bus And Firmware Limits\u003c\/h3\u003e\n\u003cp\u003eThe 1764-LSP drives the proprietary MicroLogix 1500 local expansion connector on the rear of the processor, not a ControlLogix backplane and not an EtherNet\/IP deterministic switch fabric. Up to eight 1769 Compact I\/O modules can be addressed on a properly powered local expansion chain before the 5 VDC bus current budget is exceeded; further I\/O density requires offloading to DeviceNet nodes through a 1769-SDN scanner rather than stacking more local modules. RSLogix 500 is the native programming environment; OS\/firmware major revisions on 1764-LSP\/C are bound to the project file revision saved by the offline editor, so a newer processor will reject an older protected project until the source ACS\/RSS is reopened and re-saved at the matched revision.\u003c\/p\u003e\n\u003ch3\u003eOrdering Information\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 x 1764-LSP processor module, series as shipped (commonly 1764-LSP\/C)\u003c\/li\u003e\n\u003cli\u003e1 x removable product label \/ catalog tag\u003c\/li\u003e\n\u003cli\u003e1 x installation and replacement note, MicroLogix 1500 processor swap section\u003c\/li\u003e\n\u003cli\u003e1 x 1764-BAT or equivalent backup battery if ordered separately for user-memory retention during power loss\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eBase Unit And Replacement Practice\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eInstall the 1764-LSP only into a 1764-24AWA, 1764-24BWA or 1764-28BXB MicroLogix 1500 base; the processor keys and expansion edge connector are not mechanically compatible with 1762 or 1769 sole-controller slots.\u003c\/li\u003e\n\u003cli\u003eRemove AC or DC supply from the base before extracting the processor. The MicroLogix 1500 local expansion bus is not specified for live processor hot-swap; pulling the CPU under scan can drop the I\/O image and force a cold restart on re-seat.\u003c\/li\u003e\n\u003cli\u003eRoute the single processor communication cable away from 24 VDC output flyback lines and relay coil commons; the ML1500 base has no optical isolation between low-level logic reference and the integrated I\/O commons on AC-relay bases.\u003c\/li\u003e\n\u003cli\u003eVerify battery presence before long storage. With no backup battery, volatile user program\/data RAM is lost on removal from the base, even though the non-volatile load image may still reside in the stored project file on the engineering PC.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Q\u0026amp;A\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eIs 1764-LSP interchangeable with 1764-LRP in the same base?\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNo. Both plug into the same MicroLogix 1500 base mechanically, but the LRP carries a second configurable serial channel and a larger memory map. Moving an LRP project into an LSP base aborts compile or download on insufficient user words; moving an LSP project into an LRP works only if no LRP-only instruction or extra channel is referenced.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eCan the 1764-LSP communicate on EtherNet\/IP directly?\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot natively. The 1764-LSP has no embedded Ethernet MAC. Ethernet access is achieved through an external gateway such as 1761-NET-ENI on the serial side, or by placing 1769-ECR\/1769-ENBT on a separate CompactLogix-class chassis, not by bridging through the ML1500 local expansion bus itself.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eWhat happens if 300 mA at 5 VDC is exceeded on the local bus?\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe 300 mA figure is the processor self-draw from the base 5 VDC rail; it is not the full expansion budget. If total local 1769 module draw plus processor draw exceeds the 1764 base power supply capacity, the leftmost under-powered module drops its I\/O and the processor logs a non-fatal fault until the overload is removed.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eDoes the processor retain the program without a battery?\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePartially. User logic and data reside in battery-backed RAM on the 1764-LSP. With a failed or absent 1764-BAT, a power cycle clears RAM. Recover the running image only from the last RSLogix 500 offline\/project file or from a previously saved memory module transfer, not from the processor silicon.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eIs online program edit supported on 1764-LSP?\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eYes, within RSLogix 500 online edit limits for MicroLogix 1500 standard processors. Edits are scanned into the active ladder image after acceptance, but large rung insertions near the 7.65K user-word ceiling may be rejected until memory is re-partitioned or unused data-table files are shortened.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eCan a 1764-LSP be replaced while the machine is running?\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot recommended. Unlike some ControlLogix redundant pairs, the MicroLogix 1500 single-processor architecture has no standby CPU. Removing the 1764-LSP stops the scan cycle; all integrated and local expansion I\/O enter their safe\/off-state until the replacement processor is seated, powered and placed in Run\/Remote Run.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eWhat cable is used for the DF1 \/ DH-485 port on 1764-LSP?\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor point-to-point DF1 full-duplex, a 1761-CBL-PM02 or shielded null-modem RS-232 cable is used between PC COM\/USB adapter and the processor port. For DH-485 multidrop, the 1761-NET-AIC isolator converts the RS-232 port to RS-485 and enforces the 120 ohm termination at the physical ends of the trunk.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eIs there a direct Rockwell successor for 1764-LSP?\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eRockwell lists 1764-LSP as discontinued since Jun 2017. Migration paths are normally evaluated toward 1769-L3x CompactLogix or 5069 CompactLogix, but this is not pin- or base-compatible; it requires rewiring the I\/O terminations, re-mapping 1769 local modules and converting the RSLogix 500 project to Studio 5000, not a drop-in processor swap.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":46066425823405,"sku":"1764-LSP","price":299.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/1613\/9181\/files\/allen-bradley_1764-lsp_1.jpg?v=1786977013","url":"https:\/\/www.maxwellplc.com\/products\/1764-lsp-allen-bradley-processor-module-micrologix-1500","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}