Quin Protocol

The following applies to Quin PLC’s running the Quin protocol.

Details on the device address can be found in the Device Properties Information Topic

Note that Quin PLCs support a recipe download feature, which allows files to be downloaded to the PLC at runtime. The protocol supports this feature, however, to make use of it you will require a software module which is available from Oyster. The module comes in the form of an ActiveX control which controls the recipe download process. Most SCADA packages allow the inclusion of ActiveX controls in graphics pages, meaning that the Quin Control can easily be incorporated into existing runtime graphics. Please contact Oyster for more details.

External Address Format

External Address is an ascii string which exactly references an item of data within the PLC. It can be entered at configure time as a text string, and will be validated by the system before use. For this protocol the external address has the following format:

 N - Dec number 0 - 9

The Quin PLC data types are as follows:

Offset Format

This protocol does not support table and offset style configuration.

Property Pages      

No property pages exist for this protocol

Protocol Compatibility

Both coils and inputs must be configured as bit type points. Picking any other type will generate an error when attempting to add the point. The address specified directly references a bit value within the PLC.

Holding registers and input registers are analogue values within the PLC. The type ‘short’ should be configured to read the whole word at the specified address. Bit type points allow the selection of a bit offset to reference the required bit from the word (0-15). In the case of bit selection points, drive outs will perform a read/modify/write operation as the protocol does not support a bit set operation in this case. Configuring any other point type will result in an error when the point is added.

Port Settings

Port settings will depend on the PLC type. The following shows a typical port setup:

RS232

Wiring Information

Exact wiring information will depend on the type of PLC to connection is to be made. Consult the documentation provided by the PLC manufacturer for wiring details.

Example

An example of the External Address for the 15th Coil would be:

                 CL00015