7 Applied Instructions
7.9 External Device (optional device)
404
FXCPU Structured Programming Manual
(Basic & Applied Instruction)
Cautions
→ For other cautions, refer to the Data Communication Edition manual.
1. For FX3U, FX3UC and FX3G PLCs.
1) RS instruction can be used for ch1 only (cannot be used for ch2).
Ch2 is not provided for the FX
1S, FX1N, FX2N, FX1NC, FX2NC, FXU, FX2C and FX0N PLCs.
2) Do not drive two or more RS and/or RS2 instructions for the same port at the same time.
FX
1S, FX1N, FX2N, FX1NC, FX2NC, FXU, FX2C and FX0N PLCs does not support the RS2 instruction.
2. FXU PLC supports the instruction at V3.07 or later.
3. FX0N PLC supports the instruction at V1.20 or later.
4. Number of bytes of data to be sent(m), Number of bytes to be received(n)
1) For FX3U, FX3UC, FX3G, FX2N and FX2NC PLCs
m, n: 0 to 4096 points
(However, "m + n" should not be more than 8000 points in FX
2N and FX2NC PLCs.)
2) For FX
1S, FX1N, FX1NC, FX0N, FXU and FX2C PLCs
m, n: 0 to 256 points
5. Object devices are limited.
S1: FX3U, FX3UC, FX3G PLCs only are applicable.
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