DVP-ES2-EX2-SS2-SA2-SX2-Operation Manual

2. Programming Concepts
D1140: Number of r ight-side modules (AIO, PT, TC, etc.), max. 8 modules can be connected.
D1142: Number of input points (X) on DIO modules.
D1143: Number of output points (Y) on DIO modules.
D1145: Number of left-side modules (AIO, PT, TC, etc.), max. 8 modules can be connected.
(Only applicable
for SA2/SX2).
Function Group Reverse Interrupt Trigger Pulse Direction
Number
M1280, M1284, M1286
Contents:
1. The falgs should be used with EI instruction and should be inserted before EI instruction
2. The default setting of interrupt I101 (X0) is rising-edge triggered. If M1280 is ON and EI
ins truction is executed, PLC will reverse the trigger direction as falling-edge triggered. The
trigger pulse direction of X1 will be set as rising-edge again by resetting M1280.
3. Wh en M0 = OFF, M1280 = OFF. X0 external interrupt will be triggered by rising-edge pulse.
4. Wh en M0 = ON, M1280 = ON. X0 external interrupt will be triggered by falling-edge pulse.
Users do not have to change I101 to I000.
M0
OUT
M1280
EI
FEND
I001
M1000
INC
D0
IRET
END
Function Group
Number
Stores Value of High-speed Counter when Interrupt Occurs
D1240~D1243
Contents:
1. If extertal interrupts are applied on input points for Reset, the interrupt instructions have the
priority in using the input points. In addition, PLC will move the current data in the counters to
the associated data registers below then reset the counters.
Special D D1241, D1240 D1243, D1242
Counter C243 C246 C248 C252 C244 C250 C254
Interrupt signal X1(I100/I101) X4(I400/I401) X3(I300/I301) X5(I500/I501)
2. Function:
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