For groups in the I/O image of the Safe Logic Controller (SLC) the following is defined: Only the first n channels are used (n is the set value of the corresponding parameter NumberOf..).
The following table shows the connection between values of the I/O configuration and the I/O images:
|
I/O configuration |
Corresponding I/O image |
|---|---|
When configuring the data exchange, the amount of data is limited. Any error detected is reported when compiling if these limits are exceeded in your configuration.
The total amount of exchange data (in both directions) is limited to 75 points, where
o8 Bool = 1 point
o1 INT = 1 point
o1 UINT = 1 point
o1 UDINT = 1 point
The maximum number of bytes in the direction of the Safety Logic Controller to a Logic Motion Controller (LMC) or the Logic Motion Controller (LMC) to the Safety Logic Controller is limited to 128 bytes, where
o8 Bool = 1 byte
o1 INT = 2 bytes
o1 UINT = 2 bytes
o1 UDINT = 4 bytes
In addition, the amount of each data type is limited (according to the definition in the Type column of the Schneider Electric Sercos III Parameters editor). The limits are verified by Logic Builder during the configuration process.
This chapter contains the following topics:
