Preconditions for the Use of the ACS / DCS Drives Communication via MODBUS TCP Ext Library

Note

The Function Blocks contained in the library can only be executed in RUN mode of the PLC, but not in simulation mode.

The blocks can only be used in combination with the ACSDrivesBase_AC500_V20 Library.

The library is released for the following products:

• CPUs: AC500 and AC500-eCo

• Fieldbus:MODBUS TCP

• Drives:ACS800, ACSM1, ACS350, ACS355, ACS550, ACH550, ACQ810, ACS850, ACS880, ACS580, DCS550, DCS800

• MODBUS TCP configuration:

  Prior to the use of the Function Blocks a Communication Module “Modbus_on_TCP_IP” has to be configured accordingly using Automation Builder, either at “Onboard_Ethernet” or at “CM597-ETH” module.

• ACS_COM_MOD_TCPx and ACS_COM_MOD_TCPx_ENHANCED:

  The communication Function Blocks are designed to be used each for one specific drive at runtime. So it´s not recommended to change the COM or SLAVE inputs of the blocks while the program is running.

  There is no check in the Function Blocks if the maximum number of TCP/IP sockets is already reached. So the user has to take care about the number of used socket. Each ACS_COM_MOD_TCP or ACS_COM_MOD_TCP_ENHANCED function block will use one socket.