Weidmuller Transclinic 14i+, User Manual

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shielding headaches. A photo of such solution is shown below. Please contact your
Weidmüller sales representative for further information.
In terms of configuration of the Scada or PLC acting as Modbus client please follow
these recommendations:
• Set the Modbus client timeout to 1 second
• The recommended practical polling interval per slave is 20 seconds. This is a
good tradeoff between unnecessary network traffic (and database size) and time
resolution. Keep in mind that the sun, the clouds and the MPP of the inverter do
not change significantly in 20 seconds!
• For the most efficient use of the PV site network bandwidth we recommend that all
the Modbus registers of each Transclinic are read in one single, function code 0x04
“read input registers”, request spanning from registers 1 to 35. This request will not
create any 0x02 “illegal data address” exception due to the “gaps” in the register
table.