Siemens SIMATIC TI505 Manual de Serviço descarregar pdf (Página 39)

36 Texas Instruments Communication Driver Manual

PLC ID

The format for the PLC ID for the model 315 will include both the PLC ID and a memory register

used for the two Bit Write registers. The format will be the PLC ID followed by the memory address.

XX-IOYYY or XX-YYY or XX

Where

XX PLC ID in range 1-90

- PLC ID/memory address separator

IO Optional memory type

YYY Optional Starting IO byte memory address in range 0-340.

Note: In the PLC ID field, IO will default to a byte address.

The memory address must be on an 8-bit boundary. If an IO memory address is not entered, the Bit

Write register will default to IO340. The following ladder logic rungs are an example of setting and

clearing bits that may be added to a model 315 program for the purpose of setting and clearing

individual bits.

Example 1:

With a bit write to IO054, the Operator Station will write 54 octal (44 decimal). Rung 1 tests

for bit pattern 0010 1100 in byte IO340 and set IO054.

The Operator Station will also write 254 octal (172 decimal) to byte IO340. Rung 2 tests for

bit pattern 1010 1100 in byte IO340 and resets IO054.

Example 2:

With a bit write to IO213, the Operator Station will write 13 octal (11 decimal). Rung 3 tests

for bit pattern 0000 1011 in byte IO350 and sets IO213.

The Operator Station will also write 213 octal (139 decimal) to byte IO350. Rung 4 tests for

bit pattern 1000 1011 in byte IO350 and re-sets IO213.

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Siemens SIMATIC TI505 Manual de Serviço Página 39