Delta DVP-ES2/EX2/SS2/SA2/SX2/SE manual Number D1002 Contents

DVP - ES2/EX2/SS2/SA2/SX2/SE Operation Manual - Programming

2.The default in the monitor timer is 200ms. If the program is long or the operation is too complicated, MOV instruction can be used to modify SV. See the example below for SV = 300ms.

0

M1002

MOV K300 D1000 Initial pulse

3.The maximum SV in the monitor timer is 32,767ms. However, care should be taken when adjusting SV. If SV in D1000 is too big, it cost much longer for operation errors to be detected. Therefore, SV is suggested to be shorter than 200ms.

4.Scan time could be prolonged due to complicated instruction operations or too many I/O modules being connected. Check D1010 ~ D1012 to see if the scan time exceeds the SV in D1000. Besides modifying the SV in D1000, users can also apply WDT instruction (API 07). When program execution progresses to WDT instruction, the internal monitor timer will be reset and therefore the scan time will not exceed the set value in the monitor timer.

Function Group Program Capacity

Number D1002

Contents:

This register holds the program capacity of the PLC.

SS2: 7,920 steps (Word)

ES2 / EX2 / SA2 / SX2 series: 15,872 steps (Word)

Function Group	Syntax Check
Number	M1004, D1004, D1137
Contents:

1.When errors occur in syntax check, ERROR LED indicator will flash and special relay M1004 = ON.

2.Timings for PLC syntax check:

a)When the power goes from “OFF” to “ON”.

b)When WPLSoft writes the program into PLC.

c)When on-line editing is being conducted on WPLSoft.

3.Errors might result from parameter error or grammar error. The error code of the error will be placed in D1004. The address where the fault is located is saved in D1137. If the error belongs to loop error it may not have an address associated with it. In this case the value in D1137 is invalid.

4.For syntax error codes pease refer to section 6.2 Error Code table.

Function Group	Watchdog Timer
Number	M1008, D1008
Contents:

1.When the scan is time-out during execution, ERROR LED will be ON and M1008 = ON.

2 - 56