Siemens SIMATIC S7-400 CP 440 User Manual

Basic Principles of Serial Data Transmission
2.5 Data Transmission with the 3964(R) Procedure
Point-to-point connection CP 440 Installation and Parameter Assignment
Manual, 09/2007, A5E00057742-03
47
Sending with the 3964(R) Procedure
The figure below illustrates sending with the 3964(R) procedure.
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Figure 2-14 Flow diagram of sending with the 3964(R) procedure
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Siemens SIMATIC S7-400 CP 440 Specifications

General

Product Type Designation	CP 440
Product Type	Communication Processor
Series	SIMATIC S7-400
Supply Voltage	24 V DC
Number of Interfaces	1
Communication Interface	Point-to-point
Protocols Supported	ASCII, 3964(R), RK 512
Power Supply	Via backplane bus
Operating Temperature	0 °C to 60 °C
Interface Type	RS-422/485