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If the CPU is power cycled during the process of writing to flash, and is configured to power up from flash, a fault will be generated on power up. Hardware Configuration Not Equal After Changing Target Name If the user stores a hardware configuration to flash which indicates that “Logic/Config Power up Source” is set to “Always Flash” or “Conditional Flash” and then subsequently changes the name of the target in the programming software, the hardware configuration will go Not Equal and will not Verify as equal. PLC and IO Fault Tables May Need to be Cleared Twice to Clear Faulted State Both PLC and IO fault tables need to be cleared to take the CPU out of Stop/Fault mode. If one of the tables contains a recurring fault, the order in which the tables are cleared may be significant. If the CPU is still in Stop/Fault mode after both tables are cleared, try clearing the fault tables again. VME Modules Using Program Type AM Codes When Block Transfers are enabled with a VME memory region that uses one of the program type AM Codes, the Rx7i CPU sometimes generates block transfer (BLT & MBLT) cycles to access the associated VME memory. Therefore, if you have a VME memory region configured to use one of the program type AM Codes (AM Codes 3Ah, 3Eh, 0Ah, or 0Eh), be sure to follow at least one of these two rules: a) The memory region&＃39;s Interface Type parameter must not be set to "Qword Access (64-bit)", and the VME Block Transfer parameter must be set to "Disabled". -ORb) The system may not contain any "program" and "data" VME memory regions with overlapping VME addresses. (If more than one VME module were to respond to a BLT or MBLT cycle, a system error could result.) Setting Force On/Off by Storing Initial Value Once a force on or force off has been stored to the PLC, the user cannot switch from force on to force off or vice-versa directly by downloading initial values. The user can turn off the force by doing a download, and then change the force on or off by another download. CMM COMMREQ Restriction Due to an issue in the CMM firmware, the SNP COMMREQ Read System Memory (7202) executed on a CMM module does not execute correctly for lengths greater than 760 words. Incorrect data is written to the SNP Master. Users should not use lengths greater than 760 words. 6 RX7i CPUs GFK-2438A Subject Description Number of Active Programs Returned as Zero The SNP request Return Controller Type and ID currently returns the number of active programs as zero. Serial I/O Failure at 115K During Heavy Interrupt Load Rare data corruption errors have been seen on serial communications when running at 115K under heavy interrupt load on the PLC. Under heavy load applications, users should restrict serial communications to 57K or lower. SNP ID Not Always Provided Unlike the Series 90, the PACSystems CPU’s SNP ID will not appear in the Machine Edition programmer Show Status display. Service Request 11 will always return zeros. Bus Read or Write May Return Status of 5 Instead of 4. In some cases, the Bus Read/Write Status Word returned may be 4 instead of 5 when the ending address is out of range. Must Have Logic if Powering-Up from Flash If the application will configure the CPU to retrieve the contents of flash memory at power-up, be sure to include logic along with hardware configuration when saving to flash memory. PACSystems C Toolkit Definition for Unpacked BCD 4 Digit Year Structure Wrong The definition of unpacked_bcd_tod_4_rec in release 1.0 and earlier of the PACSystems C
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