214
Symbolic addressing
Symbol addressing consists of letters, numbers and characters.
You can set the symbol of address by the following steps:
You can enter
“
start
”
as the address of I0.0
Indirect addressing
Indirect addressing uses pointer to access the data of memory. Pointer is a double
word.It contains the address of another memory location. Only V memory location, L
memory location or register accumulator (AC1, AC2, AC3) can be used as pointers.
PLC allows the pointer to access the following memory area
:
I
、
Q
、
V
、
M
、
S
、
T
、
C.
T and C can only use the current value.
Содержание PR-12 Series
Страница 26: ...19 1 xLogic CPU PR 12 Series CPU PR 14 and PR 18 series 1 PR 18 CPU 2 PR E extension...
Страница 27: ...20 PR 24 series...
Страница 47: ...40 5 3 Instruction tree...
Страница 50: ...43 CAN interface PLC supports CAN communication CAN communication will be introduced in the communication block...
Страница 54: ...47 Force table interface When PLC is converted from RUN mode to STOP mode the selected output points will be 1...
Страница 58: ...51 5 3 10 Instructions Instructions will be explained in detail in the instructions section...
Страница 73: ...66 2 Select the PLC model ensure that the PLC model in the software is consistent with the actual PLC model...
Страница 93: ...86 2 Enter the illegal real number Example...
Страница 127: ...120 Example...
Страница 137: ...130 Kc gain TD Differential time Ts Sampling time PVn 1 Last time process variable PVn Process variable...
Страница 139: ...132 Special memory bit SM1 0 Zero result SM1 1 overflow SM1 2 Negative result Example...
Страница 143: ...136 Special memory bit SM1 0 Zero result SM1 1 overflow SM1 2 Negative result SM1 3 The divisor is 0 Example...
Страница 149: ...142 Example...
Страница 152: ...145 Example ATCH instruction only needs to be connected once...
Страница 154: ...147 Example...
Страница 172: ...165 Example Notes Cycle times are set to 100 times At the end of the cycle the value of VW100 is 100...
Страница 175: ...168...
Страница 182: ...175 Example When the value of M0 0 is 1 VB0 moves a bit towards the left and VB10 moves a bit towards the right...
Страница 217: ...210 Example Four arithmetic operation Main program...
Страница 218: ...211 Subroutine...
Страница 252: ...245 10 8 Example of serial port free port communication Program 1...
Страница 254: ...247 10 9 Example of CAN free port...
Страница 256: ...249 10 10 MODBUS communication master program Read multiple hold registers and write multiple hold registers...
Страница 258: ...251 Conversion of Process quantity and set value unit...
Страница 259: ...252 Call a PID command every 0 3 seconds...
Страница 260: ...253 The conversion of output value unit...