PC Control / Profi Control 645-12M Instruction Manual pdf - Kuhnke
PC Control / Profi Control 645-12M Instruction Manual pdf - Kuhnke PC Control / Profi Control 645-12M Instruction Manual pdf - Kuhnke
Addressing 4.8. Addressing The value of the operand can be assigned in two different ways: -- Absolute value (constant, voltage or current values) -- Contents of an operand (bit, byte, word) 4.8.1. Address mnemonics Operand addresses are given as mnemonicss, e.g. BM00.00, O00.00, PT00.00. The actual address management of the processor remains invisible. For example, "L BM00.00" symbolises the loading of the contents of a memory location which carries the mnemonic name "BM00.00". 4 - 42
PC Control 645-12M used as PLC 4.8.2. Offset addressing It is possible to indicate an offset together with the absolute address of a local operand. The address is then made up by adding absolute address and offset. L BM00.00[BM00.01] means that the value in BM00.01 (offset) is added to the address of BM00.00. The resulting new address then responds to the load command. The value of the offset should be selected in a way that excludes exceeding the corresponding operand range (max. 256 addresses). Reason: Exceeding the operand range leads to reading (with read commands L, A, O...) from or writing (with assignment commands =, =N) into an operand from another range. This may lead to unintended machine functions or to program destruction. Examples L M00.00[5] is the same as L M00.05 = O01.00[6] is the same as = O01.06 4.8.2.1. External operands used as offset Offset addressing of external operands (PROFIBUS inputs) is not possible. Example: L O03a00.00[3] However, external byte operands can be used as variable offset. Example: L BR01.00[BI03a00.] 4 - 43
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- Page 31 and 32: Hardware 3.6. Memory PC Control 645
- Page 33 and 34: Hardware 3.8.2. How to avoid addres
- Page 35 and 36: Hardware -- Activate the "Memory" o
- Page 37 and 38: Hardware To reserve a memory range
- Page 39 and 40: i n 0 2 4LV o g 0 2 4LV o Sa t da t
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- Page 49 and 50: PC Control 645-12M used as PLC 4.2.
- Page 51 and 52: 4.3. Memory settings PC Control 645
- Page 53 and 54: 4.4. PLC working method PC Control
- Page 55 and 56: 4.5.1.1. Short description of local
- Page 57 and 58: 4.5.2. External operands as process
- Page 59 and 60: PC Control 645-12M used as PLC 4.5.
- Page 61 and 62: 4.5.3.1. Status of PROFIBUS master
- Page 63 and 64: 4.5.3.2. PEaxx.yy: DP slave status
- Page 65 and 66: 4.6. Summary of commands PC Control
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- Page 73 and 74: 4.6.4. Shift and rotation commands
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- Page 77 and 78: PC Control 645-12M used as PLC 4.6.
- Page 79: 4.7. Types of operands PC Control 6
- Page 83 and 84: PC Control 645-12M on PROFIBUS 4.9.
- Page 85 and 86: PC Control 645-12M on PROFIBUS PROF
- Page 87 and 88: PC Control 645-12M on PROFIBUS 4.9.
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- Page 113 and 114: 4.10.5. Hierarchy error (failure #9
- Page 115 and 116: A. Specifications Specifications A.
- Page 117 and 118: Specifications A.2. Order specifica
- Page 119 and 120: PROFIBUS hardware installation B. P
- Page 121 and 122: PROFIBUS hardware installation B.1.
- Page 123 and 124: PROFIBUS hardware installation B.2.
- Page 125 and 126: PROFIBUS hardware installation B.2.
- Page 127 and 128: PROFIBUS hardware installation Acti
- Page 129 and 130: Index A accumulator 3-9 functional
Addressing<br />
4.8. Addressing<br />
The value of the operand can be assigned in two different<br />
ways:<br />
-- Absolute value (constant, voltage or current values)<br />
-- Contents of an operand (bit, byte, word)<br />
4.8.1. Address mnemonics<br />
Operand addresses are given as mnemonicss, e.g.<br />
BM00.00, O00.00, PT00.00. The actual address management<br />
of the processor remains invisible.<br />
For example, "L BM00.00" symbolises the loading of the<br />
contents of a memory location which carries the mnemonic<br />
name "BM00.00".<br />
4 - 42
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