
4.LADDER LANGUAGE B-63983EN/02
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Format
Fig. 4.11.2 shows the ladder format and Table 4.11.2 shows the
mnemonic format.
¡¡¡¡
Control data
address
W1
CT
SUB 42
EXIN
Fig. 4.11.2 Format of EXIN instruction
Table 4.11.2 Mnemonic of EXIN instruction
Mnemonic format Status of operation result
Step
number
Instruction
Address
No.
Bit No. Remarks ST3 ST2 ST1 ST0
1RD ¡¡¡¡ .¡ ACT ACT
2 SUB 42 EXIN instruction
3(PRM) ¡¡¡¡ Control data address
4WRT ¡¡¡¡ .¡ Transmission completion W1
Control conditions
ACT=0: Do not process external data input/output.
ACT=1: Process external data input/output.
ACT is to be maintained '1' till the end of external data input/output.
After external data input, reset ACT (W1 = 1).