Specifications

54How to Create a New DP Master Project
(c) 2006 MITSUBISHI ELECTRIC CORPORATION
Item Description
Name
Name of the slave can be defined. This is for documentation
purpose only.
FDL Address
Station address of the slave
Watchdog
When selected, the watchdog control of the slave is activated.
The slave will check whether the master was in communication
with the slave within the defined watchdog time. If there is no
communication between slave and master within the specified
watchdog time the outputs are turned to the safe state.
Slave Watchdog
time
If you have selected the watchdog function you have to define
the watchdog time interval of the slave. Make sure that the data
control time in the Master Parameter setting is 6 times longer
than the slave watchdog time.
Min T_sdr
Minimum waiting time for a DP slave, until it is allowed to send
response frames to the DP master. Do not change this value.
The time is entered as multiple of the bit duration on the
PROFIBUS. The corresponding absolute time depends therefore
on the selected PROFIBUS baud rate.
Group
identification
number
PROFIBUS DP allows to transmit control commands (such as
sync or freeze) from the master to one slave, a group of slaves or
all slaves at the same time. The control commands are based on
multicast function. This means that slaves with the same group
number operate in a synchronized way with each other. A slave
can belong to several groups. You can use the boxes to assign
the slave to any of the groups.
Slave is active
If selected, the slave is included in the cyclic data transfer.
Otherwise the slave is not accessed and a connection failure with
that slave will not cause a response error in the master.
Sync(Output)
•
If this option is activated, a synchronous switching of all slave
outputs is possible.
Freeze(Input)
•
If this option is activated, a synchronous switching of all slave
inputs is possible.
Ignore AutoClear
The slave should ignore a 'Clear' telegram from the master. This
function is only enabled, if the option 'Goto Clear State' in the
master is set.
Initialize slave
when failing to
respond
The master initializes a slave, if communication fails.
Swap I/O Bytes in
Master
‚
When the Swap I/O Bytes function is activated, the order of each
pair of bytes is reversed by the PROFIBUS master.
DP V1/V2 Slave
Parameters
‚
This button is only enabled for slaves, which support the DP
V1/V2 functionality. The GSD file of the slave must contain the
keyword 'DPV1_Slave' with the value '1'. Pressing this button
opens the dialog for DP V1/V2 parameters.
• only available for slaves where this function is supported (stated at GSD file)
‚ only available for QJ71PB92V and FX3U-64DP-M projects
Swap I/O Bytes (not for A(1S)J71PB92D)
Several PROFIBUS slave products have a reversed byte order in a word device compared to
Mitsubishi. Activate the
Swap I/O Bytes
function to have the byte order reversed by the
PROFIBUS master.