Table of Contents
Advertisement
Service Manual
5. Wait for the transfer complete interrupt from the PCIO Interface chip.
6. Verify that the transfer counter reached zero, indicating that all the pixels expected to be transferred
were actually transferred.
6-2-2-2.
UART Circuit for Serial Communication with MCS
One channel of a DUART on the PCIO BOARD is used for serial communication with the MCS. The serial
lines to and from the MCS connect with the UART in the MASTER CPU on the MCS BOARD. On the
PCIO side of the UART, communication is implemented on the pass-through bus of the PCI Interface
Controller. Data is passed to and from the UART (on the PCIO side) as 8-bit data. When serial data is
received by the UART from the MCS, the UART generates an interrupt that is sent to the PCIO Interface
FPGA, which controls activity on the Add-on Bus of the PCIO BOARD.
6-3.
DRE Software
The DRE COMPUTER is responsible for acquiring, queueing, and controlling DICOM Basic Grayscale
Print Class jobs received from up to12 SCUs, processing the images, and sending them to the MCS for
printing. It functions as a MIM PRINT SERVER. The DRE also runs a Web Server that communicates with
the LOCAL PANEL and the SERVICE TOOL to allow users and Field Engineers to monitor and control
the system.
6-3-1.
General Software Functions
A typical film session might use the following negotiations between a MODALITY (SCU) and the DRE
serving as a MIM:
1. The SCU establishes an association with the DRE and negotiates the Basic Grayscale Print Class
service.
2. The SCU queries status of the IMAGER.
3. The DRE responds with status (busy or ready).
4. The SCU instructs the DRE to create a Film Session, Film Box(es), and Image Boxes, and to set
attributes for these boxes.
5. The SCU sends the DRE all the image data necessary for the print job, followed by an N--ACTION
request.
6. The DRE sends the rendered image data to the MCS, and notifies the SCU when the image is
successfully queued.
7. The MCS prints the image using the specified attributes (see step 4).
The DRE communicates with the SCU (MODALITY) over the DICOM network. It communicates with the
MCS on several lines in a single cable between the PCIO BOARD in the DRE and the MCS BOARD in
the MCS:
A parallel image interface (12 bits plus parity) between the PCIO BOARD of the DRE and the
•
IMAGE BUFFER in the MCS BOARD.
2--way serial message lines between the DRE and the MASTER CPU on the MCS BOARD.
•
These lines use an SNMP serial protocol to carry the commands that the DRE uses for high level
control of the MCS exposure engine.
A DRE Write Request line to the MCS from the DRE and an SOL (Start of Line) command from the
•
MCS to the DRE.
6-6
7F3318
2005 July Rev. B
Advertisement
Table of Contents
Troubleshooting
