I/O Terminal /
EXTENDED FUCNTIONS
54
Maximum DP buffer sizes
DP buffer
Maximum sizes under default settings
Inputs
128 bytes
Outputs
128 bytes
Diagnostic data
64 bytes
Configuration data
64 bytes
Setting via the 2-BYTE PLC interface
The maximum DP buffer sizes can be modified in Table 100, although it is necessary for the
Bus Coupler to be reset (power off/power on, or a software reset) before the new value is
adopted:
Byte
Bit
Description
12
4-7
15 dec or 0xF hex: the maximum DP buffer lengths
are changed using the values from UserPrmData
37-40
37
0-7
Maximum length of input data
38
0-7
Maximum length of output data
39
0-7
Maximum length of diagnosis data
40
0-7
Maximum length of configuration data
Example 1: Not enough configuration data
128 bytes input
128 bytes output
80 bytes CfgData
48 bytes diagnosis data
Example 2: Not enough input data
160 bytes input
96 bytes output
64 bytes CfgData
64 bytes diagnosis data