Omron GRT1 - 27-11-2006, Operation Manual

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4
GRT1-PRT PROFIBUS Communication Unit
Section 1-2
Automatic Baud Rate
Recognition The PROFIBUS Communication Unit automatically detects the Master’s com-
munication baud rate, so it is not necessary to set the baud rate. (If the Mas-
ter’s baud rate has been changed, the PROFIBUS Communication Unit must
be turned OFF and then ON again to change its baud rate.)
1-2-2 System Configuration
The PROFIBUS Communication Unit connects to the Master by a network
cable and it connects to the SmartSlice I/O Units by directly coupling the Units
with slide connectors.
I/O Data Exchange The I/O Unit data in the PROFIBUS Communication Unit is shared with the
Master’s Input and Output Areas through the PROFIBUS DP network. The I/O
Units’ data is collected in the PROFIBUS Communication Unit and exchanged
with the Master asynchronously.
Messaging Services The GRT1-PRT PROFIBUS Communication Unit also supports messaging
services, allowing the user to send acyclic message commands addressed to
the GRT1-PRT Unit or individual SmartSlice I/O Units.
Note Always install an End Unit on the last I/O Unit in the system.
CS/CJ Series PROFIBUS DP-V1 Master Unit
PROFIBUS
PLC
Serial connection
(For setting, monitoring, and operating)
Cx-PROFIBUS Configurator
PROFIBUS DP-V1
Acyclic messages
Used to monitor operation and write
parameters to the SmartSlice I/O Units or
PROFIBUS Communication Unit.
Remote I/O data is collected
from the connected
SmartSlice I/O Units and
exchanged with the Master Unit
I/O data first goes to the
Communication Unit.
Slave
GRT1-PRT PROFIBUS
Communication Unit
SmartSlice I/O Units
GRT1-TBR Right Turnback Unit
GRT1-TBL Left Turnback Unit
GCN2-100 Turnback Cable (1 m)
GRT1-END End Unit
Up to 64 SmartSlice I/O Units can be connected to one PROFIBUS Communication Unit.
(Up to 1,024 inputs or outputs can be connected.)
Up to 2 cables (2 m) can be used
per Communication Unit.
x10 x10 x1 x1
0
2
3
4
5 6
7
8
9 1
0
2
3
4
5 6
7
8
9 1
BUS BUS
ON ON
-V -V
/O
DC24V DC24V
INPUT
INPUT
REGS REGS
NC
NC
ADR
ADR
BACK
BACK
1
2
3
4
RUN RUN
ERR ERR
BF BF
TS TS
UNIT PWR UNIT PWR
I/O PWR I/O PWR
OMRON GRT1-PRT