SMC Sierra Monitor FS-8704-14, Руководство пользователя

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EtherNet/IP Driver Manual
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APPENDIX A USEFUL FEATURES
Appendix A.1 General Notes
•
The connection type does not need to be specified in the Server side Map Descriptor, but must
be stipulated on the Client side of the driver.
•
Data_Table_Read as a service can only be used when creating an explicit connection.
Appendix A.2 FieldServer as an Adapter and Scanner
It is possible for the FieldServer to act as a scanner and an adapter at the same time so long as the scanner
and adapter are configured on different ports. Consequently, this functionality is not possible on the
QuickServer platform.
Appendix A.3 Common Paths
Device Typical Path
Direct AB 1 0
AB ENI module 3 1
AB ControlLogix 1756-L55 (With network card 1756-ENBT/A) 1 1 or 1 0
CompactLogix ENI (1769-L31 using the 1761-NET-ENI) 3 1
CompactLogix Direct Connection (P/N 1769-L35E) 1 1 or 1 0
If not required by remote device (ex. Rockwell Micro820SD Controller) Not_used
Appendix A.4 Setting the Data Type for Stored Data
The default Data Type of stored data is determined by the Data Type of the Data Array. It is possible to
configure the driver to store the data as a different type. This can be achieved by specifying the data type
under the parameter EIP_Data_Type. Note that the EIP_DATA_TYPE parameter has meaning only for
DATA_TABLE_WRITE where the FieldServer is the Client and for DATA_TABLE_READ where the
FieldServer is the Server.
Appendix A.4.1 Transfer Binary Values Using EIP
The standard FieldServer data types do not follow the same naming convention as Rockwell. However, it
is possible to enter the data types in the EIP_Data_Type field in either the FieldServer or the Rockwell
format.
EIP_DATA_TYPE should be specified as Bit, BOOL or BOOLEAN.
Set the Map Descriptor length to 1 for the driver to transfer 1 bit. If a length other than 1 is specified then
bits will be transferred in 32 bit words.
Appendix A.5 Configuring a PLC to Read/Write Data to/from the FieldServer with Explicit Messaging
This example makes use of the Data Table Read/Write method for passing data between the FieldServer
and an Allen Bradley PLC. The example shows configuration of a ControlLogix PLC, but all Ro
ckwell PLC’s
that support EtherNet/IP communications and Data Table Read/Write operations in Message blocks should
be able to communicate this way. The Map Descriptors create an explicit connection to the Server and then
transfer data in the data table format. The EIP_Tag_Name field contains the tag name polled from the
client. DATA_TABLE_READ and DATA_TABLE_WRITE are the only legal values for EIP_SERVICE.