The CIMPLICITY SNP communications enabler is a serial communications enabler that supports access to most memory types in a Series 90 controller. The amount of data that can be transferred between CIMPLICITY software and the Series 90 controller is limited by the baud rate and some protocol level tunables (discussed in the next section).
In addition, when communicating to multiple Series 90 controllers in a multi-drop configuration, certain transactions between the CIMPLICITY software and the Series 90 controller must occur each time communication is switched to a different Series 90 controller. These transactions occupy a significant amount of time (typically 0.4 to 1 seconds). When designing a CIMPLICITY application, the throughput via SNP should be taken into account.
|
|
SNP performance notes. |
