What are the Enhanced Mini-ACE™’s self-test capabilities?
A. In Bus Controller and Remote Terminal modes, there is a continuous on-line loopback self-test performed for each message transmitted. In the loopback self-test, the respective (A or B) receiver/decoder samples each word transmitted. For all words transmitted by the Enhanced Mini-ACE™ (or for that matter, ACE or Mini-ACE™) BC or RT, the validity of the “received” version is verified. Also, there is a bit-by-bit comparison check between the transmitted and received versions of the last word transmitted. If there is a failure of the loopback self-test, the “ERROR FLAG” and “LOOP TEST FAIL” bits will be set in the message’s Block Status Word. In addition, if enabled, an interrupt will be issued to the host processor. Also, in RT mode, bit 14 (for Channel B) or bit 13 (for Channel A) will be set in the RT BIT Word Register, and transmitted to the BC in response to a Transmit BIT word mode command. In addition, in RT mode, assuming that bit 2 of Configuration Register #3, RTFAIL/RTFLAG WR
Related Questions
- For the Enhanced Mini-ACE™ built-in self-test, if the flag supplying the results of the comprehensive protocol self-test and RAM self-test is faulted in the "PASS" state, how is that detected?
- How long does the Enhanced Mini-ACE™’s RAM self-test take to perform?
- What exactly is done in the Enhanced Mini-ACE™ RAM self-test?
