ProSoft Technology MVI69-S3964R - Manual (Page 58)

MVI69-S3964R ♦ CompactLogix or MicroLogix Platform Reference
Siemens 3964R Protocol
Page 58 of 80 ProSoft Technology, Inc.
October 31, 2008
MVI69-S3964R Operation
The protocol realized on the MVI69-S3964R has the following special features:
ƒ Immediately after power-up and completion of the internal/external
initialization procedures the MVI69-S3964R with installed 3964R protocol is
ready to serve as an interface between a CompactLogix or MicroLogix
processor and one or two communication partners using 3964R protocol. The
parameterization of the module is realized through a configuration file. This is
where a differentiation between the communication modes 3964R with
RK512 and 3964R without RK512 takes place.
ƒ The communication mode 3964R without RK512 supports processing of up to
512 bytes.
ƒ The serial transmission parameters are optional and can be allocated
independently to each interface. Possible baud rates are 300 to 115200. The
following parity setups are possible: Even, Odd and None.
5.2.3 General Concepts
Module Power Up
On power up the module begins performing the following logical functions:
ƒ Initialize hardware components
o Initialize CompactLogix or MicroLogix backplane driver
o Test and Clear all RAM
o Initialize the serial communication ports
ƒ Read module configuration from the Compact Flash
ƒ Initialize Module Register space
ƒ Set up the communication interface for the debug/configuration port
When this initialization procedure is complete, the module will begin
communicating with other nodes on the network, depending on the configuration.