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4 |
HWhen the read period is very long (minutes or hours). In this case a shorter timeout value can be specified so the application doesn't have to wait for the read period to expire before taking action.
(Word 13) Local PLC - Memory Type: Words
Table | Series | ||||
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|
|
| Value |
| |
| Type |
| (Decimal) | Description | |
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|
|
|
|
| %L* |
| 0 |
| Program Block Local register memory (word mode) |
| %P* |
| 4 |
| Programregistermemory (word mode) |
| %R |
| 8 |
| Registermemory (word mode) |
| %AI |
| 10 |
| Analoginputmemory (word mode) |
| %AQ |
| 12 |
| Analogoutputmemory (word mode) |
| %I |
| 16 |
| Discrete input memory (byte mode) |
|
|
| 70 |
| Discrete input memory (bit mode) |
| %Q |
| 18 |
| Discrete output memory (byte mode) |
|
|
| 72 |
| Discrete output memory (bit mode) |
| %T |
| 20 |
| Discretetemporary memory (byte mode) |
|
|
| 74 |
| Discretetemporary memory (bit mode) |
| %M |
| 22 |
| Discretemomentary internal memory (byte mode) |
|
|
| 76 |
| Discretemomentary internal memory (bit mode) |
| %SA [ |
| 24 |
| Discretesystemmemory group A (byte mode) |
|
|
| 78 |
| Discretesystemmemory group A (bit mode) |
| %SB [ |
| 26 |
| Discretesystemmemory group B (byte mode) |
|
|
| 80 |
| Discretesystemmemory group B (bit mode) |
| %SC [ |
| 28 |
| Discretesystemmemory group C (byte mode) |
|
|
| 82 |
| Discretesystemmemory group C (bit mode) |
| %S [ |
| 30 |
| Discretesystemmemory (byte mode) |
|
|
| 84 |
| Discretesystemmemory (bit mode) |
| %G |
| 56 |
| Discrete global data table (byte mode) |
|
|
| 86 |
| Discrete global data table (bit mode) |
[
(Word 14) Local PLC - Memory Starting Address: Word 14 specifies the starting address in the local PLC in which the data from the remote PLC is to be stored
(Word 15) Remote PLC - Memory Type: Words
(Word 16) Remote PLC - Memory Starting Address: Word 16 specifies starting address in the remote PLC from which the data is to be read
(Word 17) Remote PLC - Number of Memory Units: Word 17 specifies the number of bits, bytes or words to be read, determined by the remote PLC memory type specified. For example, if the memory type is %I in bit mode this is the number of bits. If the
Chapter 4 Programming Communications Requests |