(1) the link register (w)
The link register is linked to the MELSECNET/H network module registers (LW) when the data is refreshed, using soft components in the CPU module. Link register save 16 bit data, 2 32-bit data that can be stored in a row.
(2) the link special register (SW)
Links to specific registers are saved MELSECNET/H network module communication status and abnormal content of registers.