Modbus configuration
Application linked Modbus Parameters
At a Glance
Type Parameter
After configuring the communication channel, you need to enter the application parameters.
These are split into four windows: l l l l the Typewindow, the Masterwindow, the Slavewindow, and the (PSR) Current Loopwindow.
The window looks like this:
Type
Master
It enables you to select the type of Modbus Protocol the module uses: l l l
Master: selects Modbus Master where the station is master,
Slave: selects Modbus Slave where the station is slave,
Immediate Server: allows UNI-TE requests to be directed to the SERVER function and not to the processor's main server.
Note: The Immediate Serverparameter requires the SERVER (PL7 Micro/Junior/
Pro ; Communication applications ; Volume 1)communication function to be programmed in PL7.
It is valid until the box is checked.
Type
Slave Immediate server
TLX DS COM PL7 xxE
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Modbus configuration
Master Function This window is only accessible by selectingMaster:
Master
Number of retries
Response time 100
3
X 10 ms
This allows you to enter: l the Number of retries: number of connection attempts made by the master before defining the slave as absent.
the default value is 3, l l l values between 0 and 15, value 0 indicates no retries by the Master.
l Response Time: time elapsed between the request made by the Master and a repeat attempt if the slave does not respond. It corresponds with the maximum time between the transmission of the last character of the Master's request and receipt of the first character of the request sent back by the slave.
l l the default value is 1s (100*10ms), values between 10ms and 10s,
Slave Function This window is only accessible by selectingSlave:
Slave
Slave number 7
This allows you to fill in the Slave Number of the device: l TSX SCY 21600/21601: l the default value is 98, l l values between 1 and 98,
TSX SCY 11601: l l the default value is 247, possible values lie between 1 and 247.
Current Loop
Function
The window looks like this:
(PSR) Current Loop
Multidrop Point-to-Point l l
It allows you to select a:
Multidrop (Current Loop) communication,
Point-to-Point (Current Loop) communication.
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TLX DS COM PL7 xxE
