Driver objects

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The following object types are available in this driver:

Driver object type

Channel type

Read / Write

Supported data types

Comment

Output

11

L / S

USINT, BOOL, SINT, UINT, INT

Input

10

L

USINT, BOOL, SINT, UINT, INT

 

Ext. data block

34

L / S

REAL, BOOL, WSTRING, DINT, UDINT, INT, UINT, STRING, USINT, SINT

 

S5Time data block

96

L / S

REAL

Only times in seconds will be read and written. Attention: 32 bits of data will be read, but in the S7, S5Time has only 16 bits; you should therefore make sure that there are still 16 bits left after the last S5Time object in a data block.

PLC marker

8

L / S

REAL, BOOL, WSTRING, DINT, UDINT, INT, UINT, STRING, USINT, SINT

 

Counters

23

L / S

UINT

 

Time

22

L / S

REAL

 

Driver variable

35

L / S

BOOL, SINT, USINT, INT, UINT, DINT, UDINT, REAL, STRING

Variables for the statistical analysis of communication.

Find out more in the chapter about the Driver variables

Objects for process variables in zenon

Object

Channel type

Data type

Name

2

8

8

Marker - (M)BOOL

3

8

9

Marker - (MB)BYTE/CHAR

4

8

2 or 1

Marker - (MW)WORD/INT

5

8

4 or 3

Marker - (MD)DWORD/DINT

6

34

8

Data block - (DBX)BOOL

7

34

9

Data block - (DBB)BYTE/CHAR

8

34

2 or 1

Data block - (DBW)WORD/INT

9

34

4 or 3

Data block - (DBD)DWORD/DINT

10

34

5

Data block - (DBD)REAL

11

34

12

Data block – STRING

12

10

8

Input - (I)BOOL

13

10

9

Input - (IB)BYTE/CHAR

14

10

2 or 1

Input - (DBW)WORD/INT

15

11

8

Output - (Q)BOOL

16

11

9

Output - (QB)BYTE/CHAR

17

11

2 or 1

Output - (QW)WORD/INT

18

22

5

Time - (T)REAL

19

8

12

Marker – STRING

21

23

2

Counter - (C)WORD

22

8

5

Marker - (MD)REAL

23

8

21

Marker - WSTRING

24

34

21

Data block - WSTRING

Time

Depending on the employed offset, the resolution of time in the S7 can differ. The driver converts all times to seconds. You cannot write to times.

Net Address

The net address of the variable; defines the MPI address. If you use an adapter of version 5, you can only communicate with addresses that are entered in the target addresses field.

I-Bit

As the driver tries to send a command without errors several times after a communication error, the datapoint will only be set to invalid after 24 seconds.