PLX51-PBM
Setup
PROFIBUS DPV0/DPV1 Master or Slave to EtherNet/IP™ or Modbus® Gateway
User Manual
ProSoft Technology, Inc.
Page 70 of 196
After updating the Data Type, the Byte Length will be set to match the selected Data
Type. By modifying the Byte Length thereafter, an array of that Data Type can be
configured. It is however important that the Byte Length is always a multiple of the
base Data Length.
Table 3.19
– Data Type – Byte Length Restrictions
Data Type
Byte Length MUST be a multiple of:
BOOL
1
SINT
1
INT
2
DINT
4
REAL
4
IMPORTANT: It is critical that the configured Byte Length be a multiple of the base Data Type.
IMPORTANT: It is critical that the total sum of input and output bytes (of all the Data Points) match that
required by the slave device. Not adhering to this could cause unexpected results.
NOTE: The DP (Byte) Offset for each the Data Point will be automatically calculated.
Slot Configuration
– Logix Specific
When using Logix as the Primary Interface, the PROFIBUS Data Points will be
packed and padded to match a device specific UDT. All the Inputs will be collated
together and then all the Outputs.
IMPORTANT: It is important that the Data Point Descriptions do not contain any illegal characters and
are not duplicated within a device. Failing to do so will create errors when generating and importing the
mapping L5X into Studio 5000.
Figure 3.87
– Slot configuration – Logix Example
