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• As in the case of ASWRITTE, values for CH, UNIT, and SLOT are entered
using the variables (CH, UNIT, SLOT) set by an initialize request. A read/
write node address is entered for NODE. 0 is entered for BS in polling mode,
or 1 BS in bit strobe mode.
• The input address to the slave device DI used here is the last of the three
words. so the input data of the slave device specified by the third word
(ASREAD_DT.RDAT[2]) of the slave data input structure ASREAD_DT is
read.
• When input data read is completed, the end confirmation coil END_ASREAD
becomes TRUE.
• ASWRITE and ASREAD are repeated using SET/RESET instructions for
slave device write/read processing.
5.3 Slave Data Input/Output
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