ProSoft Technology MVI56-S3964R - Manual (Page 36)

MVI56-S3964RT ♦ TControlLogix PlatformT Ladder Logic
TSiemens 3964R ProtocolT
Page 36 of 78 ProSoft Technology, Inc.
3.1.2 The 3964R Communication Program
The general functionality of the program is as follows:
Send jobs to a CP:
ƒ Transfer the job data to the MVI56-S3964R.
ƒ Acknowledgement from the MVI56-S3964R regarding validity of the job data.
ƒ Depending on the type of send job the transfer of the user data from/to the
MVI56-S3964R/ControlLogix processor takes place.
ƒ Acknowledgement from the MVI56-S3964R regarding
successful/unsuccessful completion of the send job.
Receive jobs from a CP:
ƒ Depending on the type of receive job the transfer of the user data from/to the
MVI56-S3964R/ControlLogix processor takes place. The header data
generated from the MVI56-S3964R will be added automatically. The MVI56-
S3964R needs no extra job data from the ControlLogix processor for receive
jobs, it will be triggered through the STX character sent from the CP to
establish the communication.
ƒ Acknowledgement from the MVI56-S3964R regarding
successful/unsuccessful completion of the receive job.
During the processes described above additional status/error messages may be
transferred from the MVI56-S3964R to the ControlLogix processor (refer to
Module Status Data Table (page 65)). Refer to Error Processing for more
information.
3.2 Commands
The WriteData sub-routine is used to handle special block processing, as well as
3964R communication jobs.
Special blocks include:
ƒ
9998 - Warm Boot
ƒ 9999 - Cold Boot
3.2.1 9998 Warm Boot
The ControlLogix processor can request a warm boot operation of the module by
placing a value of 9998 in Word 0 of the module's Output Image.
3.2.2 9999 Cold Boot
The ControlLogix processor can request a cold boot operation by the module by
placing a value of 9999 in Word 0 of the module's Output Image.
April 17, 2008