Chapter 6 Applied Instructions
6-433
API Instruction code Operand
Function
1903 TIMCHK
S
1
, S
2
, D
Checking time
Device
X Y M S T C HC D L SM SR E PR K 16# “$” DF
16-bit instruction (7 steps)
Symbol:
S
1
：
Time which passes Word
S
2
：
Setting value Word
D
：
Output device Bit
Explanation:
1. When the conditional contact is ON, S
1
starts to count. D is not ON until the value in S
1
is larger
than or equal to the value in S
2
. Even if the conditional contact is switched OFF later, the value
in S
1
is unchanged, and D is still ON.
2. If the conditional contact is switched from OFF to ON, S is cleared to 0, and D is OFF.
3. S
1
takes 100 milliseconds as the timing unit.
4. S
1
+1 and S
1
+2 are parameters for system use. Please do not occupy them.
5. When the on-line editing is used, please reset the conditional contact to initialize the
instruction.
Example:
When M0 is ON, D0 starts to count. Y0.0 is not ON until the value in D0 is larger than or equal to 50
(5 seconds). Even if the conditional contact is switched OFF later, the value in D0 is unchanged, and
Y0.0 is still ON.
Additional remark:
1. If S exceeds the device range, the instruction is not executed, SM0 is ON, and the error code
in SR0 is 16#2003.
2. If users declare the operand S
1
in ISPSoft, the data type will be ARRAY [3] of WORD/INT.
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