1202
11 PROCESS CONTROL INSTRUCTIONS
11.2 I/O Control Instructions
■Loop stop processing (5)
The following processing is performed according to the SPA status of the alarm detection (ALM).
SPA status Processing details
1 Performs the following operations and terminates the S.IN instruction.
• The last output value (BW) is held.
• The control mode (MODE) is set to MAN.
• All of the alarm bits (BB1, BB2, and BB3) are set to 0.
• ALM SEA is set to 0.
0 Performs "range check (1)".
Error code
(SD0)
Description
3400H An invalid operation (such as division by zero) is performed.
3402H The value specified by (s1), (d1), (s2), or (d2) is a subnormal number or NaN (not a number).
3403H An overflow has occurred.
3405H Upper limit range error occurrence (HH) < upper limit range error return (H), lower limit range error return (L) < lower limit range error
occurrence (LL), or input upper limit (NMAX) < input lower limit (NMIN)