Siemens S7-400 manuals

Siemens S7-400 Service Manual (228 pages)

Brand: Siemens | Category: Unknown | Size: 1.49 MB |

English

Table of contents

6ES7810-4CA08-8BW1

1

Safety Guidelines

2

Qualified Personnel

2

Prescribed Usage

2

Trademarks

2

Disclaimer of Liability

2

Preface

3

Requirements

4

Online Help

5

Further Support

5

Training Centers

5

Technical Support

6

Contents

7

A5E00706949-01

10

1 Bit Logic Instructions

11

1.4 XOR Bit Exclusive OR

14

1.6 ---( ) Output Coil

16

1.8 ---( R ) Reset Coil

20

1.9 ---( S ) Set Coil

22

Symbol

32

1.17 Immediate Read

33

1.18 Immediate Write

34

Bit Logic Instructions

36

2 Comparison Instructions

37

Symbols

38

2.4 CMP ? R Compare Real

42

Comparison Instructions

44

3 Conversion Instructions

45

3.2 BCD_I BCD to Integer

46

3.3 I_BCD Integer to BCD

47

3.15 CEIL Ceiling

59

3.16 FLOOR Floor

60

4 Counter Instructions

61

Counter Instructions

62

4.2 S_CUD Up-Down Counter

63

4.3 S_CU Up Counter

65

4.4 S_CD Down Counter

67

<C no.> <Z no.>

70

5 Data Block Instructions

75

Data Block Instructions

76

6 Logic Control Instructions

77

6.5 LABEL Label

81

Logic Control Instructions

82

7 Integer Math Instructions

83

Math Instructions

84

7.3 ADD_I Add Integer

85

7.4 SUB_I Subtract Integer

86

7.5 MUL_I Multiply Integer

87

7.6 DIV_I Divide Integer

88

Integer Math Instructions

94

Point Math Instructions

96

8.3 Basic Instructions

97

Description

100

Status word

100

Example

100

8.4 Extended Instructions

103

9 Move Instructions

113

Symbol

124

SRCBLK RET_VAL

125

10.7 Call Multiple Instance

126

10.14 ---(RET) Return

134

11.1 Shift Instructions

135

11.2 Rotate Instructions

145

Status Bit Instructions

152

Examples

155

Area in Memory

162

Time Value

162

Time Base

163

Choosing the right Timer

164

Timing Diagram

166

14.3 WOR_W (Word) OR Word

187

Word Logic Instructions

192

Mnemonics (International)

193

Mnemonics (SIMATIC)

196

B Programming Examples

201

Clock Pulse Generator

206

Signal Check

207

Programming Examples

209

Solving a Math Problem

213

Ladder Logic Program

213

Heating an Oven

214

Programming Examples

216

C Working with Ladder Logic

217

end: AN error

218

5 NOP 0

222

C.2 Parameter Transfer

223

Working with Ladder Logic

224

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