Delta DVP-ES2/EX2/SS2/SA2/SX2/SE manual Communications

3.2Explanations to Basic Instructions…………………………………………………………... 3-3

3.3Pointers………………………………………………………………………………………… 3-12

3.4Interrupt Pointers……………………………………………………………………………… 3-12

3.5 Application Programming Instructions……………………………………………………… 3-14

3.6Numerical List of Instructions (classified according to the function)…………………….. 3-24

3.7Numerical List of Instructions (in alphabetic order)……………………………………….. 3-33

3.8Detailed Instruction Explanation…………………………………………………………….. 3-42

4 Communications

4.1Communication Ports…………………………………………………………………………. 4-2

4.2Communication Protocol ASCII mode……………………………………………………….. 4-3

4.2.1 ADR (Communication Address) ……………………………………………………		4-3
4.2.2	CMD (Command code) and DATA…………………………………………………	4-3
4.2.3	LRC CHK (checksum) ………………………………………………………………	4-5
4.3 Communication Protocol RTU mode…………………………………………………………		4-7

4.3.1Address (Communication Address) ………………………………………………. 4-7

4.3.2 CMD (Command code) and DATA………………………………………………… 4-8

4.3.3 CRC CHK (check sum) …………………………………………………………….. 4-9

4.4PLC Device Address…………………………………………………………………………... 4-11

4.5Command Code……………………………………………………………………………….. 4-13

4.5.1 Command Code: 01, Read Status of Contact (Input point X is not included)… 4-13

4.5.2Command Code: 02, Read Status of Contact (Input point X is included)……... 4-14

4.5.3Command Code: 03, Read Content of Register (T, C, D)………………………. 4-15

4.5.4Command Code: 05, Force ON/OFF single contact…………………………….. 4-16

4.5.5 Command Code: 06, Set content of single register……………………………… 4-17

4.5.6Command Code: 15, Force ON/OFF multiple contacts…………………………. 4-18

4.5.7Command Code: 16, Set content of multiple registers………………………….. 4-18

5 Sequential Function Chart

5.1Step Ladder Instruction [STL], [RET] ………………………………………………………. 5-2

5.2	Sequential Function Chart (SFC) ……………………………………………………………	5-2
5.3	The Operation of STL Program………………………………………………………………	5-4

5.4Points to Note for Designing a Step Ladder Program…………………………………….. 5-9

5.5Types of Sequences………………………………………………………………………….. 5-11

5.6IST Instruction…………………………………………………………………………………. 5-22

6 Troubleshooting

6.1Common Problems and Solutions…………………………………………………………... 6-2

6.2Error code Table (Hex) …………………………………………………………................... 6-4

6.3Error Detection Devices………………………………………………………….................. 6-6

7 CANopen Function and Operation

7.1The Introduction of CANopen…………………………………………………………........... 7-2

7.1.1 The Description of the CANopen Functions……………………………………… 7-2

7.1.2The Input/Output Mapping Areas………………………………………………….. 7-3

7.2The Installation and the Network Topology…………………………………………………. 7-3

7.2.1The Dimensions…………………………………………………………................. 7-3

7.2.2The Profile………………………………………………………….......................... 7-4

7.2.3 The CAN Interface and the Network Topology…………………………………… 7-4

7.3The CANopen Protocol………………………………………………………….................... 7-8

7.3.1The Introduction of the CANopen Protocol……………………………………….. 7-8

7.3.2The CANopen Communication Object……………………………………………. 7-9

7.3.3 The Predefined Connection Set…………………………………………………… 7-14

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