Instruction References7-267.4 Special Instruction7.4.1 Obtaining Starting Word Number of Specified Slot (GETSTNO)The starting word number of a specified slot is obtained. Instruction formatDT10DR0GETSTNO U1S Operation unit (i)• There is no operation unit. List of operandsOperand DescriptionS Specify the starting address storing the slot number or a constant.D Specify the starting address of destination. Available devices (●: Available)Operand16-bit device 32-bitdevice IntegerRealnum-berString IndexmodifierWX WY WR WL WS SD DT LD UM WI WO TSCSTECE IX K U H SF DF " "S ● ● ● ● ● ● ● ● ●D ● ● ● ● ● ● ● Processing• Reads the starting word number of the slot specified by [S] to [D]. Precautions during programming• An operation error occurs when a slot number without unit registration is specified when anI/O map has been registered.• An operation error occurs when the number of a slot in which no unit is installed is specifiedwhen no I/O map has been registered. Flag operationName DescriptionLatest error(SR7)Hold error(SR8)Set in case of out-of-range values in indirect access (index modification).Set when an out-of-range value is specified for [S] (slot number).Set when a slot number (S) without unit registration is specified when an I/O map has beenregistered.Set when a slot number (S) without an installed unit is specified when no I/O map has beenregistered.
