請問當(dāng)使用FX3U-485ADP-MB做MODBUS通訊時 D8404 D8424是什么作用
手冊FX3G_FX3U_FX3UC USER'S MANUAL - MODBUS Serial Communication Edition 37頁
STEP number of the first ADPRW command that caused the original error. 這句話是什么意思
還有這個Note:If the step number is greater than 32767 the value will become a negative number. To see the step numbers above 32767 the user must convert the step number to an unsigned value. 是什么意思