10
PROFIBUS DP Gateway
Section 1-3
PROFIBUS I/O Data
Exchange
The PRT1-SCU11 PROFIBUS DP Gateway supports cyclic Master - Slave
communications, i.e. data exchange mode. In data exchange mode the
PRT1-SCU11:
• retrieves all data from the attached units (e.g. Compoway-F) according to
the PROFIBUS configuration and stores this data in the PROFIBUS input
buffer. All input data is obtained before the data is sent to the PROFIBUS
Master as input data.
• writes all data from the PROFIBUS outputs to the attached units accord-
ing to the PROFIBUS configuration, using the proper protocol. Only if the
data received from the Master differs from the current value in the units,
the new output data is sent.
• sends special operation commands.
• sends command data from Free Communication Blocks to the addressed
unit, and returns the command response to the Master as PROFIBUS
input data.
Troubleshooting
Functions
The PRT1-SCU11 is provided with a variety of troubleshooting functions for
prompt recovery in case of errors:
• Extensive self-diagnostic function at startup.
• Diagnostics information is sent to the PROFIBUS Master unit in case:
• One or more units attached to the PRT1-SCU11 has a communication
error.
• The PRT1-SCU11 has a system error.
• Diagnostics flags, indicating if units attached to the PRT1-SCU11 are
functioning correctly. For Host Link there is a communication active bit
that indicates to the Host Link Unit if the received PROFIBUS data is
valid.
1-3-2
Specifications
General Specifications
The PRT1-SCU11 is a Gateway between PROFIBUS DP and a range of
OMRON devices, supporting OMRON proprietary protocols. The Unit version
number on the side case of the housing indicates supported protocols. If no
version number is shown, the version number is 1.0. The following table lists
the protocols supported per version number.
PROFIBUS DP Gateway
Model
Note
1.
Unit version 2.0 includes the same functions as Unit version 1.0, in addition
to new protocols supported, and it is backward compatible with Unit ver-
sion 1.0. Unit version 2.0 will eventually replace Unit version 1.0.
2.
This manual describes all features and functions of Unit version 2.0.
Model name
Unit Version
Protocol supported
PRT1-SCU11 1.0
Compoway-F
Host Link
2.0
Compoway-F
Host Link
K-Format
Memobus
Summary of Contents for PROFIBUS DP GATEWAY
Page 1: ...OPERATION MANUAL PROFIBUS DP Gateway to Host Link Compoway F PRT1 SCU11 Cat No W01E EN 02 ...
Page 2: ...PRT1 SCU11 PROFIBUS DP Gateway Operation Manual Revised September 19 2005 ...
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