37
Configuring the PROFIBUS DP network
Section 2-6
by a specific configurator). The Generic Slave DTM does not check such
keywords. In this case, refer to the manual of the specific device for details.
4.
Also in this window are the maximum values, which can be set, and the to-
tals of I/O data that actually have been set. If - while selecting I/O modules
- one of the maximum values is exceeded, a warning message will be dis-
played.
Removing I/O Modules
To remove I/O modules from the Configured Modules list, perform one of the
following procedures.
• Select the I/O module that needs to be removed from the Configured
Modules list, and double-click it with the left mouse button. If more than
one module must be added, repeat this step for the other modules.
• Select the I/O module that needs to be removed from the Configured
Modules list, and press the Remove button.
Example
For the PRT1-SCU11, the I/O modules for two E5ZN devices, and two E5_N
devices have been selected, see figure above. The E5ZN devices have Com-
poway-F addresses 1 and 2, the E5_N devices have Compoway-F addresses
3 and 5. Address 4 is not used in this example.
Watchdog Settings
Apart from the I/O module selection, the Configuration tab also contains the
settings for two other parameters.
1.
Enable Watchdog Control
This parameter will enable/disable the monitoring of the Master-Slave
communication in the slave device. If enabled, the slave will stop I/O data
exchange with the Master, if the Master has not sent any request message
to the slave, within the configured Watchdog time. Furthermore, the slave
will
• switch its outputs to a known state.
• signal its change of state in a diagnostics message, the next time the
Master addresses the slave.
• request re-parameterization from the Master, before resuming I/O data
exchange.
If disabled, the slave will remain in data exchange, even if the Master is not
communicating, thus maintaining its outputs in the latest known state,
based on the last I/O data exchange message.
2.
Watchdog Interval
This value is the watchdog time-out related to the Master-Slave communi-
cation time out.
Note Enabling the Watchdog Control is highly recommended for safe operation of
the network.
!Caution
In the current version of CX-Profibus, the watchdog value for each of the slave
devices is overruled by the value determined by the Master DTM. Therefore,
changing the value in the Generic Slave DTM has no effect.
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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