CIMPLICITYMaximum Cache
The following global parameter is used to determine the maximum number of caches available on a project or port basis.
Note: <PORT>_MAX_CACHE has a higher precedence than does the S90TCP_MAX_CACHE.
- S90TCP_MAX_CACHE
- <PORT>_MAX_CACHE
S90TCP_MAX_CACHE
| For | Project |
| Purpose | To set the maximum number of caches for the project. |
| Value | 0 - 2000 (New projects can be configured for up to 2000 caches; existing projects can be configured for up to 1024 caches.) |
| Default Value | 1024 |
Use the global parameter S90TCP_MAX_CACHE to change the cache size for the project from its default size.
<PORT>_MAX_CACHE
| For | Port |
| Purpose | To set the maximum number of caches for a single port. |
| Value | 0 - 2000 (New projects can be configured for up to 2000 caches; existing projects can be configured for up to 1024 caches.) |
| Comments | <PORT> is the name of the S90 Triplex port to be configured such as S90TRI0, S90TRI1, etc. The value assigned to the global is the maximum port size. If a value larger then the maximum is specified, the largest allowed value will be used. |
| Default Value | 1024 |
Use the global parameter <PORT>_MAX_CACHE to change the cache size for a specific port from its default size. Where <PORT> is the number of the port; for example S90TR10_MAX_CACHE.
Note: In some configurations, supporting a larger message size may be beyond the capability of Series 90-70 (as it is configured with the existing PLC application). This is more likely to occur where the IC697CMM741 Ethernet cards are used for communications on the Series 90-70. If communications becomes unstable as a result of using the larger message size, it is recommended that the application continue to use a cache size of 1024 bytes.
When confirming that the number of concurrent messages chosen is compatible with the PLC application, be sure to validate the application with the Series 90-70 in run mode running the complete PLC application.
