Siemens SINAMICS S150 NEMA, Operating Instructions Manual, Page: 422 / 862

Operation
6.12 Communication via MODBUS TCP
Enclosed Drives
420
Operating Instructions, 12/2018, A5E36652151A
Modbus settings with interface X1400
Using the following parameters, set the communication for Modbus TCP with a X1400
interface:
Parameter Explanation
r2050[0...19] Connector output to interconnect the PZD received from the fieldbus controller
via IF1.
p2051[0...24] Selects the PZD (actual values) to be sent to the fieldbus controller in the word
format via IF1.
r2053[0...24] Displays the PZD (actual values) sent to the fieldbus controller in the word
format via IF1.
r2054 Status display for the internal communication interface.
p8840 Setting the monitoring time to monitor the received process data via the COMM
BOARD.
If, within this time, the Control Unit does not receive any process data from the
COMM BOARD, then the drive shuts down with fault F08501.
p8839[0...1] Assigning the CBE20 interface (x1400) for cyclic communication via PZD
interface 1 (IF1) and interface 2 (IF2).
r8850[0...19] Connector output to interconnect the PZD (setpoints) received in the word format
via IF2.
p8851[0...24] Selects the PZD (actual values) to be sent in the word format via IF2.
r8853[0...24] Displays the PZD (actual values) sent in the word format via IF2.
r8854 Status display for COMM BOARD.
6.12.4 Mapping tables
Modbus register and Control Unit parameters
The Modbus protocol contains register or bit numbers for addressing the memory. You must
assign the appropriate control words, status words, and parameters to these registers in the
device.
The valid holding register address range extends from 40001 up to 40722. When trying to
access other holding registers, the "Exception code" error is output
The process data are transferred into the register range from 40100 up to 40119.
Note
"R"; "W"; "R/W" in the Access column stands for read (with FC03); write (with FC06);
read/write.