9
PROFIBUS DP Gateway
Section 1-3
The PRT1-SCU11 is present on the PROFIBUS DP network as a slave unit.
The interface of the PRT1-SCU11 is controlled by a Master unit on the net-
work. This Master unit can be any PROFIBUS DP class 1 or class 2 master
Compoway-F
Compoway-F is the OMRON proprietary serial communication bus system,
based on RS-485, to communicate with a range of OMRON Temperature
Controllers.
K-Format
The K-Format protocol is the OMRON proprietary serial communication bus
system, based on either RS-422A or RS-485, to communicate with OMRON’s
E5AK/E5EK Intelligent Digital Controllers.
Host Link
Host Link is the OMRON proprietary serial communication bus system, based
on RS-422A, to communicate with the OMRON/Yaskawa R88A-MCW151-E
option board for W-series servo drives.
Memobus
The Memobus protocol is the Omron-Yaskawa variation of the Modbus RTU
Protocol used to communicate over either RS-422A or RS-485 with Omron-
Yaskawa F7 Inverters.
IBM compatible Personal
Computer
An IBM compatible Personal Computer is connected to the PRT1-SCU11
PROFIBUS DP Gateway via a RS-232C serial communication to the auxiliary
port. Application programs running on the Personal Computer can communi-
cate through the auxiliary port with Compoway-F, K-Format and Memobus
components, thus bypassing the PROFIBUS DP interface. The Host Link pro-
tocol is not supported by the Auxiliary port.
I/O Data
The data exchanged over PROFIBUS DP are word sized, and represent
either fixed length communication blocks or Free Communication blocks. The
PRT1-SCU11 PROFIBUS DP Gateway limits the total number of input words
to 100 words, and the total number of output words to 100 words.
Fixed Communication
Blocks
Fixed Communication Blocks are I/O modules with predefined parameter con-
tent. These modules are to be used to send output and control data to a
device and read status from a device. These I/O modules are defined in the
PRT1-SCU11 and cannot be changed by the user. They are the most com-
monly used and straight forward way to exchange data between a Master and
one or more of the devices attached to the PRT1-SCU11.
In general there are at least two Fixed Communication Blocks defined for
each device type or group of devices attached to a PRT1-SCU11. One block
is always available for limited I/O data, e.g. setpoint and process value, and
one block is available for extended I/O data transfer.
Free Communication
Blocks
Free Communications Blocks, are predefined I/O modules, which allow the
user to send any read, write or operate instruction to any attached Compo-
way-F, K-Format or Memobus device without unit interference. The informa-
tion in the Free Communication Block is used by the PRT1-SCU11 to
assemble the correct message format.
Three types of Free Communication Blocks are defined, the types are Oper-
ate, Read and Write.
• Operate: Execution of a special operation command, which is defined in a
controller.
• Write: Execution of a write data command to any parameter defined in a
controller.
• Read: Execution of a read data command of any parameter defined in a
controller.
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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