Scilab Function
Last update : September 2006

opc_read - Read all OPC Items Value from OPC Server

### Calling Sequence

  `B=call('opc_read',A,1,'i','out',[1,A],2,'i')`

### Parameters

- `A`: the number of opc items to be readed
- B: the items value

### Description

this function is to read OPC items value from OPC group.

### Examples

    A=2

    B=call('opc_read',A,1,'i','out',[1,A],2,'i')

### See Also

`opc_connect`, `opc_disconnect`, opc_add_group,opc_add_item, opc_write, copy_item

### Author

`Developed by Zhe Peng, Longhua Ma.`