I/O Terminal /
EXTENDED FUCNTIONS
53
Register
Bit
Description
14,15
Assignment for terminal 8
0: DP DataExchange (default)
2: disabled (Multi-Config mode)
…
…
…
31
14,15
Assignment for terminal 128
0: DP DataExchange (default)
2: disabled (Multi-Config mode)
Note:
It can happen under multi-configuration mode that the CfgData exceeds 64 bytes. In
such a case, the CfgData must be enlarged.
7.5
Changing the Size of the Process Data
This section covers changing the size of the process data.
7.5.1 Exceeding the Input Data Length (InputData)
By default, a maximum of 128 bytes of input data is set on the Bus Coupler.
The maximum length of the DP buffer can be changed. The amount, however, by which one
length is increased must be taken away from another, and it must be noted that the sizes can
only be changed in 8-byte steps:
7.5.2 Exceeding the Output Data Length (OutputData)
By default, a maximum of 128 bytes of output data is set on the Bus Coupler.
The maximum length of the DP buffer can be changed. The amount, however, by which one
length is increased must be taken away from another, and it must be noted that the sizes can
only be changed in 8-byte steps:
7.5.3 Exceeding the Configuration Data Length (CfgData)
By default, a maximum of 64 bytes of configuration data is set on the Bus Coupler. Normally,
this is only a problem in very rare cases. In multi-configuration mode, however, this limit is
reached with no more than a 30 digital terminals, because each MultiCfgMode module
occupies two bytes in the configuration data, on top of which there is at least one sum byte
for digital inputs or for digital outputs.
The maximum length of the DP buffer can be changed. The amount, however, by which one
length is increased must be taken away from another, and it must be noted that the sizes can
only be changed in 8-byte steps: