User-friendly functions make the communication modules flexible and cost-effective:

• Different transmission protocols:
  • 3964 (R), for connecting Siemens devices;
  • RK 512, for connecting computers (only for CP 441-2);
  • Printer drivers, for controlling printers;
  • ASCII, for the easy and variable connection of third-party devices;
  • For CP 441-2 additional use of Modbus RTU possible (reloadable drivers)

Parameter assignment

Parameterization of the CP 441-1 and CP 441-2 communication modules is especially user-friendly and simple:

• STEP 7 tool for communications configuration:
  The user uses the communications configuration to define which protocol driver is to be used or which driver-specific properties are to be used.
• Parameter assignment via the CPU:
  The PG is simply connected to the CPU. Communication with the CP takes place via the C bus.

The configuration data is saved in a data block, which is saved in the memory card of the CPU. When modules are replaced, the new module is therefore immediately ready for use.

• Configuration package (on CD):
  With electronic manual and parameterization input screens. As of STEP 7 V11 (TIA Portal), the necessary parameterization input screens are already integrated.

Configuring the drivers

The SIMATIC PtP CP Loadable Drivers Configuration Package and STEP 7 (V5.3 or higher) are required to load and configure the drivers. The drivers are copy-protected by a dongle.