Delta DVP-ES2/EX2/SS2/SA2/SX2/SE manual IST Instruction, Ist, Initial State

DVP - ES2EX2/SS2/SA2/SX2/SE Operation Manual - Programming

5.6IST Instruction

API	Mnemonic	Operands	Function	Controllers
60	IST		Initial State	ES2/EX2 SS2 SA2 SX2

Type	Bit Devices					Word devices				Program Steps
OP	X	Y	M	S	K	H KnX KnY KnM KnS T	C D	E	F	IST: 7 steps
S	*	*	*
D1				*
D2				*
						PULSE		16-bit		32-bit
						ES2/EX2 SS2 SA2 SX2 ES2/EX2 SS2 SA2 SX2 ES2/EX2 SS2 SA2 SX2

Operands:

S: Source device for assigning pre-defined operation modes (8 consecutive devices). D1 The

smallest No. of step points in auto mode. D2: The greatest No. of step points in auto mode.

Explanations:

1.The IST is a handy instruction specifically for the initial state of the step ladder operation modes.

2.The range of D1 and D2 : S20~S911, D1 < D2.

3.IST instruction can only be used one time in a program.

Program Example 1:

M1000
IST	X20	S20	S60

S:	X20: Individual operation (Manual operation)	X24: Continuous operation
	X21: Zero return	X25: Zero return start switch
	X22: Step operation	X26: Start switch
	X23: One cycle operation	X27: Stop switch

1.When IST instruction is executed, the following special auxiliary relays will be assigned automatically.

M1040: Movement inhibited	S0: Manual operation/initial state step point
M1041: Movement start	S1: Zero point return/initial state step point
M1042: Status pulse	S2: Auto operation/initial state step point
M1047: STL monitor enable

2.When IST instruction is used, S10~S19 are occupied for zero point return operation and cannot be used as a general step point. In addition, when S0~S9 are in use, S0 initiates

5 - 22