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Year 2000 Compliance of Intelligent Modem Unit (IMU)IMU OverviewThe Intelligent Modem Unit (IMU) is a HART modem with an on-board microprocessor for communication with host computer. It connects to the host computer via an RS-232 port. The IMU incorporates a high precision A/D converter so that it can read the 4-20 mA output of an attached HART field device. The IMU provides pass-through transmission of host computer HART commands and field device responses. It includes the data link layer HART protocol logic. It also accumulates, and can report to the host computer, field device communications statistics. The IMU was developed and marketed by ASTEC. It is now a discontinued product. Dates in the IMUThere is only one function in the IMU that uses or contains a date. The IMU stores the date of the original factory calibration constants and the date of any subsequent field calibration. The storage location in the IMU provides for a full four digit year. The calibration dates reported to the Cornerstone software in the host computer are always displayed on the screen using a full four digit year, in the form "08:30:00 Wed 08-Jul-2019". The IMU has been tested to insure that it can correctly accept, store, and report back to the host computer, dates beyond the year 2000. Within the IMU, or the Cornerstone software, there is no computation performed involving dates. Nor is there any decision making using dates. There are therefore no year 2000 "transition" issues whatsoever with the IMU. In short, the IMU is, and has been tested to be, completely compliant with the year 2000 transition. NoticeApplied System Technologies, Inc. ("ASTEC"), may at its sole discretion provide the Year 2000 solutions described in this document in the form of patches, maintenance releases or updates, and/or new or replacement products or modules. The Year 2000 statements in this document are "Year 2000 Readiness Disclosures" under the Year 2000 Information and Readiness Disclosure Act of 1998. The statements above are provided on an "as is" basis, as a convenience for our customers and are subject to, and do not supplement, modify, or extend, the limited warranty for Cornerstone HARDWARE products as DESCRIBED in the CORNERSTONE PRODUCT PRICE LIST. ASTEC makes no representation or warranty as to the Year 2000 compliance of other hardware, firmware, software (such as any BIOS, operating system, calibrator, or instrument), services, protocols, data, or interfaces to third-party systems, that may be used with ASTEC PRODUCTS. |
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