JPH03280149A - Carrier device for sheet paper or the like - Google Patents

Abstract

PURPOSE:To shorten the processing time of a whole system by providing plural storage means which hold communication history between central processing units and can be freely written and read from each of plural central processing units. CONSTITUTION:In the case a higher rank CPU 11 collects the communication history stored in a dual port RAM 15 between an intermediate rank CPU 12 and a lower rank CPU 13, the lower rank CPU 13 copies the contents of the dual port RAM 15 to the dual port RAM 16 before it sends a response to the intermediate rank CPU 12, and puts interruption into the higher rank CPU 11 at timing of the lower rank CPU 13 sends the response to the intermediate rank CPU 12. The higher rank CPU 11 refers to the contents of the dual port RAM 16 as processing for that interruption. Accordingly, the higher rank CPU 11 can collect the communication history between the intermediate rank CPU 12 and the lower rank CPU 13 at real time. Thus, the processing time of the whole system can be shortened.

Description

[Detailed Description of the Invention] Technical Field The present invention relates to a paper sheet conveying device, and in particular, in the paper sheet conveying device, communication with a host device, feeding out of paper sheets, and conveyance of paper sheets are controlled respectively. This invention relates to a method for collecting communication history between multiple central processing units.

Conventional technology Conventionally, in paper sheet conveyance devices, a host CPU controls communication with a host device outside the device, and a middle CPU manages overall mechanical control within the device to control sheet conveyance operations. However, the lower CPU managed special processing such as the stepping motor within the device and controlled the feeding operation of paper sheets.

After one operation is completed, this upper CPU issues a communication history information uptake command to the middle CPU, and the middle CPU collects the communication history that has been collected in advance. The communication history of the middle CPU and the lower CPU was collected by editing the information so that the communication history of the middle CPU and the lower CPU was collected and maintenance of the device was performed.

In such conventional paper sheet conveyance devices, the communication history of the entire system was collected by issuing a communication history information download command to the upper or middle CPU at a timely basis. There is a problem in that the entire system takes extra processing time.

OBJECTS OF THE INVENTION The present invention has been made in order to eliminate the problems of the conventional ones as described above, and it is an object of the present invention to provide a paper sheet conveying device that can shorten the processing time of the entire system.

Structure of the Invention The paper sheet conveying device according to the present invention has communication with a host device,
A paper sheet conveying device including a plurality of central processing units that respectively control the sending out of paper sheets and the conveyance of the paper sheets,
A plurality of storage means are provided between the plurality of central processing units, each of which holds a communication history between the central processing units, and can be freely written to and read from each of the plurality of central processing units; The communication history between the central processing units is collected through the central processing unit.

Embodiment Next, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of one embodiment of the present invention, and FIG. 2 is an overall diagram of one embodiment of the present invention. In these figures, a control unit 1 in a paper sheet conveying device 2 is connected to a host CPU II that controls communication with a host device (not shown) located outside the device, and controls overall mechanical control within the device to handle paper sheets. A middle-level CPU 12 that controls the conveyance operation of paper sheets (not shown), and a lower-level CPU that controls special processing such as a stepping motor (not shown) in the device and controls the feeding operation of paper sheets.
U1B, a dual port RAM (random access memory) 14 that is provided between the upper CPU II and the middle CPU 12 and holds the communication history of the middle CPU 12, and between the upper CPU II and the lower CPU 13 and between the middle CPU
12 and the lower CPU13, and the lower CPU
Dual port RAM 1. which holds the communication history of U13.
5.16.

The dual port RAM 14 can be accessed from both the upper CPU 1 and the middle CPU 12, and the dual port RAM 15 can be accessed from both the middle CPU 12 and the lower CPU 12.
The dual port RAM 16 can be accessed from both sides of the PU 13, and the dual port RAM 16 can be accessed from both the upper CPU 1 and the lower CPU.
It can be accessed from both directions of U13.

Upper CPUI 1 is middle CPUI 2 and lower CPU 13
When collecting the communication history stored in the dual port RAM 15 between
The contents of M15 are copied to the dual port RAM 16, and the lower CPU 1B issues an interrupt to the upper CPU 1 at the timing when it sends a response to the middle CPU 12.

The host CPU 1 refers to the contents of the dual port RAM 16 in processing for the interrupt.

As a result, the upper CPU II is connected to the middle CPU 12 and the lower CPU
The communication history with the PU 13 can be collected in real time.

In this way, by providing the dual port RAM 16 between the upper CPU II and the lower CPU 13 for storing the communication history between the intermediate CPU 12 and the lower CPU 1B, the information collected by the intermediate CPU in advance can be saved. It is no longer necessary to issue a communication history information siphoning command from a high-level CPU to a middle-level CPU, which was used to collect the communication history that has been stored, and the processing time of the entire system can be shortened.

As described in detail, according to the present invention, a plurality of central processing units that control communication with a host device, feeding of paper sheets, and conveyance of paper sheets, respectively, are connected to each other. By providing a plurality of storage means that hold the communication history between the two and can be written to and read from each of the plurality of central processing units, the processing time of the entire system can be reduced.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention, and FIG. 2 is an overall diagram of the embodiment of the present invention. Explanation of symbols of main parts 1... Control unit 2... Paper sheet conveying device 11... Upper CPU 1 2... Middle C 3... ...Lower CPU 14-1 6...Dual port RAM

Claims (1)

[Claims] (1) A paper sheet conveying device including a plurality of central processing units that respectively control communication with a host device, feeding out of paper sheets, and transportation of the paper sheets, the plurality of central processing units A plurality of storage means are provided between the central processing units, each of which holds a communication history between the central processing units, and can be written to and read from each of the plurality of central processing units, and the central processing unit A paper sheet conveying device characterized in that a communication history between the two is collected.