ProSoft Technology 5204SE-MNET-PDPMV1 User Manual
Page 34
5204SE-MNET-PDPMV1 ♦ ProLinx Gateway
Procedures
Modbus TCP/IP to PROFIBUS DP-V1 Pass-Through Master
User Manual
Page 34 of 235
ProSoft Technology, Inc.
December 22, 2009
PROFIBUS cyclic output data will always be stored in the gateway's memory
addresses 1000 through 1767. These are 16-bit word-sized registers, which can
hold two (2) 8-bit bytes per register, for a total PROFIBUS cyclic output capacity
of 1536 bytes.
Warning: Inadvertant overwriting of data in the PROFIBUS memory areas could cause
unexpected behavior on your PROFIBUS DP network, leading to unintended equipment operation.
Such unintended operation could cause injury to personnel or damage to equipment.
Output Data Size
0 to 768
Total number of PROFIBUS Output Words (one word equals two bytes) to be
sent to all PROFIBUS Slaves. These Output Words will be the data sent to Slave
devices on the PROFIBUS network.
Input Byte Swap
Yes or No
This parameter determines if the bytes in the PROFIBUS Input Data area are
swapped before being stored in the gateway memory database. If the parameter
is set to N
O
, no swapping will be applied. If the parameter is set to Y
ES
, the order
of bytes in each word will be swapped before being stored in memory.
Example:
With Input Byte Swap set to N
O
, incoming order is unchanged - ABCDEF
With Input Byte Swap set to Y
ES
, each byte pair is swapped - BADCFE
Output Byte Swap
Yes or No
This parameter determines if the bytes in the PROFIBUS Output Data area are
swapped before being transmitted to slaves on the PROFIBUS network. If the
parameter is set to N
O
, no swapping will be applied. If the parameter is set to
Y
ES
, the order of bytes in each word will be swapped before being transmitted.
Example:
With Output Byte Swap set to N
O
, outgoing output order is unchanged -
ABCDEF
With Output Byte Swap set to Y
ES
, each output byte pair is swapped -
BADCFE