FUJITSU F2MCTM-16LX - Manual (Page 80)

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CHAPTER 3 INTERRUPTS
[bit 13, bit 12, bits 5, bit 4] S0 and S1 (extended intelligent I/O service status)
S0 and S1 are read-only bits. The values set in these bits indicate the end condition of EI
2
OS. These bits
are initialized to '00' upon a reset.
Table 3.3-3 shows the relationship between the S bits and the end conditions.
Table 3.3-3 S Bits and End Conditions
S1 S0 End conditions
0 0
EI
2
OS running or not activated
0 1 Stop status by count end
1 0 Reserved
1 1 Stop status by request from internal resource