JPS5936300B2 - Product sales data processing system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a system in which a relay device connects a plurality of electronic cash registers (
Hereinafter referred to as ECR.

), when an abnormality such as a power outage occurs in the relay device during the data transmission operation,
Product sales data processing in which the relay device transmits the previously transmitted data to the central management device on the condition that the relay device receives the same data transmission operation command as the data before the occurrence of the abnormality from the relay management device after the abnormality recovery. It's about systems. Conventionally, in this type of system, if an abnormality such as a power outage occurs in the relay device while the relay device is performing data transmission operations with each ECR by activation from the central management device, those data transmission operations will be interrupted. It was supposed to be processed from the beginning.

This has the disadvantage that settings or collected data processed before an abnormality occurs are wasted, and time is also lost. Therefore, an object of the present invention is to solve the above-mentioned drawbacks of the conventional example by transmitting the transmission processing data up to the time before the occurrence of the abnormality to a central management device when an abnormality such as a power outage occurs during data transmission operations. It's about doing.

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing the entire system. In the figure, CQ is a central management device, and ME0 to MEn are parent E connected to the central management device CQ via transmission lines.
It is CR. Each parent ECRMEo-MEn is connected to multiple child ECR5E0 through transmission lines.
...5En1 to 5Enn are connected to each other. As shown in FIG. 2, the central management unit CQ includes a central processing unit (CPU) 1, a keyboard 3 and a display 4 via a keyboard display control circuit 2, a read-only memory (ROM) 5, and a read-only memory (ROM) 5. Random access memory (RAM) 6 - Printer 8 via printer control circuit T, Transfer control circuit 9 to the parent EC
Parent ECR transmission interface circuits 10 connected to RMEo-MEn are respectively connected. As shown in FIG. 3, the keyboard 3 is provided with various function keys 12 in addition to number keys 11. Also,
A program for setting various data in the parent ECRMEO to MEn and child ECRMEOl to MEnO, and conversely collecting various data stored therein, is written in the ROM 5 in advance. Furthermore, the RAM6
, a setting data storage area for temporarily storing setting data entered manually from the keyboard 3, and a setting data storage area for temporarily storing setting data entered manually from the keyboard 3;
CRMEO-MEn and child ECRSEOL~SEnn
A collected data storage area is provided for storing collected data collected from. Said parent ECRMEO-
As shown in FIG. 4, the MEO is connected to the CPU 2l via the keyboard display control circuit 22 to the keyboard 23 and the display 24, to the ROM 25 and RAM 26, to the printer 28 via the printer control circuit 27, and to the transmission control circuit 2.
9, the central management device transmission interface circuit 30a is connected to the parent ECR transmission interface circuit 10 of the central management device CQ, and the child ECR SEO
The child ECR transmission interface circuits 30b connected to 1 to SEnn are respectively connected. As shown in FIG. 5, the keyboard 23 includes a number key 31, a department key 32, a date/NO key 33, an alternate key 34, a PLU key 35, a setting/read key 36, a department registration key 37, and an amount registration key. 38, discount key 39, premium key 40, subtotal key 41, deposit/cash total key 42, and other operations of this parent ECR such as "power off 0FF", "registration REG", "inspection X", "settlement Z", "setting SET", etc. A mode changeover switch 43 for selecting a mode is provided respectively. In addition, the ROM2
5, in addition to the processing programs related to each task selected by the mode changeover switch 43, the child ECRS is
A transmission program is written in advance for setting data in EOl to SEnn or transmitting data collected therefrom to the central management device CQ. On the other hand, the R
The AM 26 includes various types of memories that aggregate and store data related to products registered through registration operations according to classifications such as by department and by transaction, as well as a flag allocation area 44 and a first buffer memory 45, second buffer memory 46, register table memory 47, specified register table memory 48, addition data storage area 49,
Setting collection data storage areas 50 and the like are provided respectively.

The flag allocation area 44 includes a reception availability determination flag JKF, a power failure recovery processing flag TKF, and first and second flags.
, third sequence error detection flag SEFl,SE
F2, SEF3, business command reception flag GKF, setting collection completion flag SKFl addition data discrimination flag K
DF, first and second data presence/absence determination flags DFl, D
F2, parent activation flag MFL, transmission processing error detection flag DEF, sending discrimination flag SHF, sending end flag SFF, timeout flag TOF, address register AR, command register CRl, block counter BCl, terminal counter TCl, timer counter WC
etc. are assigned. The register table memory 47 also contains a parent ECR MEO-MEn and its parent E
Child ECRSEOl~S connected to CRMEO-MEn
A line address storage section 47a that stores the line address of Enn, and a register number storage section 47c that stores a task completion determination flag 47b and a register number corresponding to each line address of the line address storage section 47a are provided. There is. Furthermore, the line addresses of the child ECRSEOl-SEnn and the parent ECRMEO-MEn that are to be set or collected are set in the designated register table memory 48 according to the register designation text transmitted from the central management device CQ. A line address storage section 48a and a register number storage section 48c for storing a business completion determination flag 48b and a register number are provided in correspondence with the line address storage section 48a. Said child ECRSEOL~SE
nn, as shown in FIG. 7, the CPU 5l is connected to a keyboard 53 and a display 54 via a keyboard display control circuit 52, a ROM 55 and a RAM 56, a printer 58 via a printer control circuit 57, and a transmission control circuit 59.
A parent ECR transmission interface circuit 60 is connected to the child ECR transmission interface circuit 30b of the parent ECR MEO-MEn through the parent ECR MEO-MEn.

As shown in FIG. 8, the keyboard 53 has a number key 61, a department key 62, a date/NO key 63, and an alternate key 64.
, PLU key 65, department registration key 67, amount registration key 6
8, discount key 69, premium key 70, subtotal key 71, deposit/
In addition to the current key 72, [power off 0FF] and [registration REG]
“Inspection X” “Payment Z” “Settings SET” etc. This child E
A mode changeover switch 73 for selecting a CR business mode is provided in each case. In addition, the ROM 55 includes:
In addition to the processing programs related to each task selected by the mode changeover switch 73, the parent ECR MEO~
A transmission program is written in advance for setting data transmitted in the RAM 56 based on commands given from the MEn, and conversely for transmitting data stored there to the parent ECR MEO to MEn. Furthermore, the R.A.
The M56 is provided with various types of memories that aggregate and store data regarding products registered through registration operations, according to classifications such as by department and by transaction. Next, the effect will be explained.

Now, when the power of the central management device CQl parent ECRMEO-MEn and child ECRSEOl~SEnn is turned on, the parent ECRMEO-MEn executes the subroutine for key capture processing and reception according to the monitor routine shown in the flowchart of FIG. 9a. The keyboard 23 constantly repeats loop L1 to determine whether or not the availability determination flag JKF and the power failure recovery processing flag TKF are set.
When the upper key is operated, key processing, that is, registration work, etc., is performed according to the key import processing subroutine, and when an interrupt request is given from the central control unit CQ, the reception interrupt routine shown in the flowchart of FIG. 10 is executed. operate according to Therefore, the reception interrupt routine shown in the flowchart of FIG. 10 will be explained first.

Now, when the parent ECRMEO-MEn receives an interrupt request transmitted from the central management device CQ, the parent ECRMEO-MEn
EO-MEn first determines whether or not the received data is text according to the flowchart in FIG. is determined, and if the determination result is a polling signal POLL, the following processing is performed. 1. When the first data presence/absence determination flag DFl is set, that is, when there is response data in the first buffer memory 45, the data in the first buffer memory 45 is transmitted to the central management unit CQ.

2. When the first data presence/absence judgment flag DFl is set, that is, there is no response data in the first buffer memory 45, and the sending judgment flag SHF is set, the second data presence/absence judgment flag DE2 is set, that is, when there is no response data in the first buffer memory 45. On the condition that the data is stored in the second buffer memory 46, the data in the second buffer memory 46 is transmitted to the central management unit CQ.

3 When the first data presence/absence determination flag DFL and the sending determination flag SHF are set to
When the data presence/absence judgment flag DF1 and the second data presence/absence judgment flag DF2 are set and the sending judgment flag SHF is set, the end of
Transmission signal EOT is sent to central control unit CQ.

Further, the received data is a polling signal POL.
In determining whether or not the signal is L, if it is not a polling signal, then it is determined whether or not it is an acknowledge signal ACK, and if the determination result is an acknowledge signal ACK, the following processing is performed.

1. When the first data presence/absence judgment flag DFl is set, the first data presence/absence judgment flag DFl is set.
After resetting, it sends an end of transmission signal EOT to the central control unit CQ.

3. When the first data presence/absence discrimination flag DFl is set, the second data presence/absence discrimination flag DF2 is reset and the end of transmission signal EOT is set.
After sending the data to the central control unit CQ, the sending end flag S
If FF is set, various line-related flags are reset.

In addition, in determining whether or not the received data is text, if it is text, an acknowledgment signal ACK is sent to the central management device CQ on the condition that there is no error in the received text, and then It is determined whether or not it is a command, and if the determination result is not a command, that is, if it is setting data, etc., the following processing is performed.

4 If the sequence is normal, the received data is transferred to the setting collection data storage area 50 after setting the number of blocks of the received data in the block counter BC.

5. If the sequence is not normal and data is being transmitted with the child ECRs SEOl to SEnO, set the abnormality detection flag DEF during transmission processing, and then reset various line-related flags.

6 If the sequence is not normal and there is no data transmission relationship with the child ECR SEOl~SEnn, the first
After setting the sequence error flag SEFl of
Reset various line-related flags.

Further, in determining whether or not the received data is a command, if it is a command, it is determined whether the received data is a command or not.
Next, determine whether the sequence is normal or not, as shown in
On the condition that the judgment result is not a normal sequence, the process proceeds to step 5 or 6 above.

On the other hand, if the above determination result is a normal sequence, the type of the next received command is determined, and the following processing is performed depending on the type of command. If it is the 7 register specification text command 12001, the reception permission determination flag JKF is set on the condition that the command is in the READY state, and the reception permission response data 1C] is set in the first buffer memory 45, and then the first data The presence/absence determination flag DFl is set.

Although not shown here, if the state is not the READY state but the BUSY state, the first buffer memory 45
Setting reception rejection data 1A' is set in . If it is the 8 setting check command 63027, the setting completion response data F is set in the first buffer memory 45, and then the first data presence/absence determination flag DFl is set on the condition that the setting has been performed correctly.

In this case as well, although not shown, if the setting is not performed correctly, the setting incomplete response data 1G1 is set in the first buffer memory 45. If it is the 9 department setting command 72201, the setting receivable response data 1C1 is set in the first buffer memory 45 on the condition that the department is in the READY state, and then the first data presence/absence determination flag DF1 is set.

If it is the O setting business command 305', then it is determined whether the business command reception flag GKF is set.

At this time, if the business command reception flag GKF is not set, the business command reception flag GKF is set.
After setting KF and setting the business response data 1E1 in the first buffer memory 45, the first data presence/absence determination flag DFl is set.

Furthermore, if the business command reception flag GKF is set, then the second data presence/absence determination flag DF2 is set.
If the second data presence determination flag DF2 is not set, that is, if there is no setting data or collected data in the second buffer memory 46, the business response data is stored in the first buffer memory 45. When the second data presence/absence determination flag DF2 is set, that is, when the second buffer memory 46 contains setting data or collected data, the process advances to the process of setting the transmission determination flag SHF.

@If it is the full inspection work command 5360t, the process proceeds to a judgment as to whether or not the work command reception flag GKF in the process of [phase] is set, and processing is performed according to the result of the judgment.

The following processes are based on various business commands, but are omitted here.

Now, based on the processing in the reception interrupt routine of FIG. 10 explained above, next
The case of setting data to MEO-MEO and children ECRSEOL-SEnn, and conversely the case of collecting data from them, will be explained along the flowcharts of FIGS. 9A and 9b.

First, when setting data from the central management device CQ to the parent ECRMEO~MEn and the child ECRSEOl~SEnn, the keyboard 3
After setting the setting data such as department code, section code, etc. and the register specification text specifying the terminal to set the setting data in RAM 6 by key operation, for example, ``A
” key, register specification text command 200
1 is sent to each parent ECRMEO-MEn. Then, the parent ECRMEO-MEn that received the register specification text command 52001 transmits an acknowledge signal ACK to the central management device CQ according to the reception interrupt routine shown in the flowchart of FIG. Processing (under the condition that it is in the READY state, the reception permission determination flag JKF is set, and the reception permission response data 1C1 is set in the first buffer memory 45).
After setting the first data presence/absence determination flag DFl
Set.

)I do. At this time, since the reception permission determination flag JKF is set by the process in step 7 above, the process in FIG. The key capture processing subroutine is repeated to determine whether or not the key is set. On the other hand, the acknowledge signal AC
When K is received by the central management device CQ, the central management device C
A polling signal POLL is transmitted from Q.

Then, when the parent ECRMEO-MEn receives the polling signal POLL, since the first data presence/absence determination flag DFL is set, the parent ECRMEO-MEn performs the above-mentioned process 1 (setting reception set in the first buffer memory 45). The response data 1C5 is transmitted to the central management device CQ.
)I do. And this setting receivable response data 1C? When received by the central management device CQ, an acknowledgment signal ACK is transmitted from the central management device CQ. Then, the parent ECRMEO-MEn receives its acknowledge signal ACK.
When receiving the data, it performs the process f (resetting the first data presence/absence determination flag DFl and transmitting the end of transmission signal EOT). When this end of transmission signal EOT is received by the central management device CQ, the end of transmission signal EOT is sent from the central management device CQ to the RAM6.
The register specification text set to is sent. Then, the parent ECRMEO-MEn transmits an acknowledgment signal ACK to the central control unit CQ, and according to the process in step 4 above, sets the block number of the received register designation text in the block counter BC,
And the register designation text is transferred to the designated collection data storage area 50. When this acknowledgment signal ACK is received by the central management device CQ, a setting check command W3O2l is transmitted from the central management device CQ. Then, the parent ECRMEO-MEn issues a command to check its settings! Upon receiving 3021, it transmits an acknowledge signal ACK to the central processing unit CQ, and carries out the process in step 8 above (if the setting has been performed correctly, the response data 1F1 is set; otherwise, the response data 1G1 is set in the first buffer memory 45). After that, the first data presence/absence flag DFl is set. Thereafter, when the polling signal POLL transmitted from the central management device CQ is received, the process in step 1 is performed, and when the acknowledge signal ACK is received, the process in [F] is performed, and the transmission of the register designation text is completed. Subsequently, a department setting command 92201 is transmitted from the central management device CQ, and setting data is transmitted in the same manner as described above.

That is, the parent ECRMEO-MEn first connects to the central management device C.
When the department setting command W22Ol is received from Q, the process of 9 is performed, and the received department setting command 12
201 is set in the command register CR, the next time the polling signal is received, the process in step 1 is performed, the next time the acknowledge signal ACK is received, the process in [F] is performed, and then the department setting data is received. Then, when the setting check command 302 is received, the process of 8 is performed, and then when the polling signal POLL is received, the process of 1 is performed, and when the acknowledge signal ACK is received. Perform the process in step 1 above. Above,
Parent ECRMEO-MEn settings collection data storage area 5
0 stores department setting data and register designation text. After this, a setting task command 73051 is transmitted from the central management device CQ. Then, the parent ECRMEO-MEn executes its setting business command! 30
5, it returns an acknowledge signal ACK to the central control unit CQ and performs the process of the above-mentioned [phase]. At this time, since the business command reception flag GKF is set by the process in the above-mentioned [phase], the process in FIG. 9a proceeds from loop L2 to the next process. During this period of processing, if an abnormality occurs, the first sequence error detection flag SEF1 is set by the above-mentioned processing 6, so that the process returns to loop L1 again. On the other hand, when proceeding from loop L2 to the next process, first the register specification text stored in the setting collection data storage area 50 is converted into an inline address and written to the specified register table memory 48, and the specified number of registers is After setting the terminal counter TC and setting the program to start the work, the child ECRSEO1 to SEnn or the parent E which is designated for data transmission from the designated register table memory 48 is set.
Search whether CRMEO-MEO exists or not. here,
If there is an ECR designated for data transmission, its inline address is set in the address register AR, and then the timeout flag TOF, which is set when the transmission time set in the timer counter TOF has elapsed, is set to confirm that it is not set. On the condition that the transmission time is within the specified transmission time, after setting the program to start the work, the transmission start is turned on. Then, the department setting data stored in the setting collection data storage area 50 is set to the child ECRSEOL corresponding to the line address set in the address register AR.
Transmission settings are made to SEnn. At this time, although not shown in the figure, each time the setting (or collection) work for the child ECRSEOL~SEnn is completed, the terminal counter TC
The data is counted down by 111, the setting collection completion flag SKF is set, and the task completion determination flag 48b corresponding to the line address of the child ECRSEOL-SEnO for which setting (or collection) has been completed is set. Also, during transmission during this period, if the BUSY state is entered, the second sequence error detection flag SEF2 is set, and if the no response state is entered, the third sequence error detection flag SEF3 is set. On the other hand, Figure 9a
After turning on the above-mentioned transmission start, the process proceeds to loop L3 to determine whether the setting collection completion flag SKF, the second sequence error detection flag SEF2, and the third sequence error detection flag SEF3 have been set, and to determine whether the key is set. The import processing subroutine is repeated.

Here, when the setting work for the child ECRSEOL to SEnn corresponding to the line address set in the address register AR is completed, the setting collection completion flag SKF is set, so the process in FIG.
3, proceed to the line control I routine.

In the line control I routine, as shown in the flowchart of FIG.
Then, it is determined whether the addition data discrimination flag KDF is set.

This addition data discrimination flag KDF is set when a business command such as inspection or settlement is received, but is not set when a business command such as setting is received for other business. Therefore, in this case, since the addition data discrimination flag KDF is not set since it is a setting service command, the addition data discrimination flag KDF is then reset, and then the abnormality detection flag DEF during transmission processing is set. Determine whether it is set. At this time, if there is an abnormality in the above processing, the transmission processing abnormality detection flag D is set by the processing in 5 above.
Since EF has been set, the process returns to step 6 of the monitor routine shown in FIG. It is determined whether the address of the designated register table memory 48 has reached the end. Then, on the condition that data transmission with all the ECRs has not been completed and that the address has not reached the end, the process returns to 8 in FIG. 9a and data transmission with the next ECR is performed. If the above address has reached the end, the address is initialized, and it is determined whether or not the timer counter WC is activated. If the result of that determination is activation, the transmission time is set directly, and if not, the transmission time is set as a timer based on the number of remaining devices. counter W
After setting to C, return to step 5 in FIG. 9 above. In addition, in loop L3 of FIG. 9, when the second and third sequence error detection flags SEF2 and SEF3 are set, that is, when the BUSY state or no response state occurs during transmission with child ECRSEOl to SEnn, the ninth Proceed to the line control routine shown in Figure b, and set the addition data flag K.
Depending on the state of DF, a subroutine of addition processing is performed.

In this way, the setting data is sequentially set to the children ECRSEOL to SEnn set in the specified register table memory 48.

Then, when data transmission with all the set ECRs is completed, or when the set transmission time has elapsed and the timeout flag TOF is set, the routine shifts to the data sending routine. In the data sending routine, according to the flowchart shown in FIG.
Information on whether the settings (or collection) for RSEOl~SEnn and the parent ECRMEO-MEn have been completed is created for transmission to the central management device CQ, the created data is set in the second buffer memory 46, and then Second
After setting the data presence determination flag DF2, it is determined whether or not it is the last data.

If it is not the final data, it is set directly, and if it is the final data, the sending end flag SFF is set, and then the subroutine of the key capturing process is repeated until the second data presence/absence determination flag DF2 is set. During this period, when the polling signal POLL is received from the central management device CQ, the transmission data set in the second buffer memory 46 by the process in step 2 is transmitted to the central management device CQ, and when the acknowledgment signal ACK is received, the send data is transmitted to the central management device CQ. Process. Then, since the second data presence/absence determination flag DF2 is set in accordance with the process in step 4, it is next determined whether or not the abnormality detection flag DEF during transmission processing is set. At this time, the transmission processing error detection flag DEF
If the abnormality detection flag DEF during transmission processing is set, the error detection flag DEF during transmission processing is reset, and after resetting various flags, the process returns to step 6 of the monitor routine. However, if the abnormality detection flag DEF during transmission processing is not set, the final data is After printing the department setting command 22' stored in the command register CR in the journal on the condition that the command 22 has been sent, the process returns to 6 of the monitor routine. By the above operations, the parent ECRMEO~MEn and child ECRSE
If you perform registration work with various data set in Ol~SEnn, the parent ECR MEO-MEnn
and RAM26,56 of child ECRSEOL~SEnn
Various registered data are aggregated and stored.

For registration, first enter the amount of the product using the number keys 31 and 6.
1, press the amount keys 38, 68, then input the department code to which the product belongs using the number keys 31, 61, press the department keys 37, 67. Furthermore, for products whose unit prices are preset in the memory corresponding to each department key 32, 62, one product can be registered simply by pressing the department key 32, 62. Therefore, next, from the central management device CQ to the parent ECR MEO-ME
When collecting registration data stored in n and ECRSEOL~SEnn, the central management unit CQ
After setting the register designation text for specifying the terminal from which data is to be collected in the RAM 6 by operating the keys on the keyboard 3, for example, if you press the "B" key, the register designation text will be changed to the parent ECR MEO to MEn in the same way as in the setting work described above.
is set in the setting collection data storage area 50.

Furthermore, during this period, the parent ECRMEO-MEn
Registration operations can now be performed by the subroutines for key import processing in loops L1 and L2.

After this, all inspection work command T is sent from the central control unit CQ.
36゛01 is sent.

Then, when the parent ECRMEO-MEn receives the all-inspection work command 13601, it processes the @ and sets the received all-inspection work command 3601 to the command register CR, and then sends an acknowledgment signal ACK to the central management unit CQ. return. At this time, since the business command reception flag GKF is set by the process ◎ above, the process in FIG. 9a proceeds from loop L2 to the next process. If an abnormality occurs during processing during this period, the above-mentioned 6.
The first sequence error detection flag S
Since EFl is set, the process returns to loop L1 again.
On the other hand, when proceeding from loop L2 to the next process, first the register specification text stored in the setting collection data storage area 50 is converted into an inline address and written to the specified register table memory 48, and the specified number of registers is After setting the terminal counter TC and setting the program to start the work, select the child ECRSE designated for data transmission from the designated register table memory 48.
Search whether Ol~SEnn or parent ECRMEO-MEO exists.

Here, if there is an ECR designated for data transmission, its inline address is set in the address register AR,
Transmission activation is turned on on the condition that the timeout flag TOF is not set, that is, the transmission time is within the set one. Then, the all inspection work command 13601 set in the command register CR is transmitted to the children ECRSEOL-SEnn corresponding to the line address set in the address register AR. In the child ECRSEOl~SEnn, the parent ECRSEO-ME
Upon receiving the total inspection command 13601 sent from n, it transmits various data stored in the RAM 56, such as by department and by transaction, to the parent ECR MEO-MEn. On the other hand, the parent ECRMEO-MEO
The data sent from EOl to SEnO is transferred to the setting collection data storage area 50, and the process proceeds to loop L3 shown in the flowchart of FIG. 9a, where the setting collection completion flag SKFl and second sequence error detection flag S
EF2 and third sequence error detection flag S
The subroutine of determining whether EF3 is set and key import processing is repeated.

Therefore, even during the transmission with the child ECRSE01-SEnn, the parent ECRSE0-MEn is in a state where the registration work can be performed by the subroutine of the key capture process in loop L3.

Here, when the collection work from the child ECRSEOl to SEnO corresponding to the line address set in the address register AR is completed, the setting collection completion flag SKF is
is set, the process in FIG. 9a proceeds from loop L3 to the line control I routine. In the line control routine I, as shown in the flowchart of FIG. 9b, first the setting collection completion flag SKF is reset, and then it is determined whether the addition data discrimination flag KDF is set.

In this case, since it is a full inspection service command, the addition data discrimination flag KDF is set, so after performing addition processing and transferring the result to the addition data storage area 49, the addition data discrimination flag KDF is reset. After performing the processing, the error detection flag DEF during transmission processing is
is set. At this time, if there is an abnormality in the process 7 above, the abnormality detection flag DEF during transmission processing has been set in the process 5 above, so the process returns to 4 of the monitor routine shown in FIG. 9a.
If it has not been set, then it is determined whether data transmission with all ECRs set in the designated register table memory 48 has been completed, and whether the address of the designated register table memory 48 has reached the end. And all E above
Figure 9 a (7) on the condition that data transmission with CR has not been completed and the address has not reached the end.
Return to step 6 and perform data transmission with the next ECR. As the data stored in the child ECRSEOl-SEnn set in the specified register table memory 48 is collected in this way, the data is stored in the added data storage area 48 of the parent ECRSEO-MEn. Then, when data transmission with all set ECRs is completed, or when the set transmission time has elapsed, the timeout flag is set.
When F is set, the inspection data stored in the added data storage area 48 is transmitted to the central control unit CQ according to the data transmission routine shown in FIG. 9c. That is, in the data sending routine, the specified register table memory 4
8 task completion flag 48b causes child ECRSEOL~
The information on whether collection has been completed for SEnn and the data stored in the addition data storage area 49 are created for sending to the central control unit CQ, the created data is set in the second buffer memory 46, and then After setting the second data presence/absence determination flag DF2, it is determined whether or not the data is the final data. If it is not the final data, it is set directly, and if it is the final data, the sending end flag SFF is set, and then the subroutine of the key capturing process is repeated until the second data presence/absence determination flag DF2 is set. Therefore, even during this period, the parent ECR MEO-ME
n is in a state where registration work can be performed by the key capture process of the data sending routine. Also, during this time,
Upon receiving the polling signal POLL from the central management device CQ, the second buffer memory 46 is
Sends the transmission data set to the central control unit CQ,
Next, when the acknowledgment signal ACK is received, the above-mentioned process 2 is performed. Then, since the second data presence/absence determination flag DF2 is set in accordance with the process in step 4, it is next determined whether or not the abnormality detection flag DEF during transmission processing is set. At this time, if the abnormality detection flag DEF during transmission processing is set, the abnormality detection flag DEF during transmission processing is reset, and after resetting various flags, the process returns to step 4 of the monitor routine. If the flag DEF is not set, all inspection work commands 13 stored in the command register CR in the journal are sent on the condition that the final data has been transmitted.
After printing 601, the process returns to 6 of the monitor routine. By the way, as mentioned above, if an abnormality such as a temporary power outage occurs in the parent ECR MEO-MEn while the setting or collection work is being performed by starting from the central management unit CQ, an abnormality will be detected during the transmission process. Since the flag DEF is set, the state returns to step 4 in the monitor routine of FIG. 9a.

Now, if a power outage occurs during inspection work and the power is restored, for example, a department setting command 122' is sent from the central management device CQ, then the parent EC
RMEO-MEn is the received department setting command 022.
05 and the command before the power outage set in the command register CR, that is, the full inspection work command? 3601 is the same. In this case, since the two do not match, the entire inspection work command 73601 set in the command register CR is sent to the central management device C.
All inspection work command request data 11 requested for Q
After setting the data into the first buffer memory 45 and setting the first data presence/absence determination flag DFl, an acknowledgment signal ACK is returned to the central management unit CQ. When this acknowledgment signal ACK is received by the central management device CQ, the central management device CQ sends a polling signal POLL.
is sent. Then, upon receiving the polling signal POLL, the parent ECRMEO-MEn transmits the full inspection service command request data l' set in the first buffer memory 45. Then, this full inspection work command request data "11" is received by the Shino management device CQ,
All inspection work commands 36 corresponding to the request data 7
0” is sent from the central management device CQ, the parent EC
In RMEO-MEn, since the transmitted command and the command in the command register CR are the same, the power failure recovery processing flag TKF is set. Then, parent E
In CRMEO-MEn, loop L1 in FIG. 9a
When the power failure recovery processing flag TKF is set in , the process moves to a data sending routine, and the settings and collected data up to the time before the power failure occurred are transmitted to the central control unit CQ.

Therefore, even if an abnormality such as a power outage occurs during such transmission processing, the data up to that point will be transmitted to the central control unit CQ, so there is no need to start processing from the beginning as in the past. Loss can be eliminated. In particular, parent EC
Having the RMEO-MEn return command request data for starting from the current state to the central management device CQ has the advantage of eliminating time loss at the time of starting. The above is from the central management device CQ to the parent EC
When setting data to RMEO~MEn and child ECRSEOl~SEnO, or conversely when collecting data from them, when setting data, for example, department data, to child ECRSEOL~SEnn in parent ECRMEO~MEn, On the other hand, a case will be described in which inspection data is collected from child ECRSEO1 to SEnO.

First, from the parent ECRMEO-MEn to the child ECRSEOl~
When setting department data to SEnO, the parent ECRM
In the EO-MEn, a register designation text designating a terminal for setting data is stored in advance in the designation register table memory 48 of the RAM 26 by key operations on the keyboard 31.
After setting, perform the following key operations.

(1) After entering the department code using the number key 31, press the department key 37. Then, after entering the section code using the number key 31, press the department key 37.

After inputting this operation for each department, the substitute key 34 is finally pressed as the closing key. (nAfter the operation in (1) above,
Press the setting/read key 36.

Then, when the above operation 12(1) is performed, the parent ECR MEO-MEn first determines whether or not there is activation from the central management device CQ, according to the flowchart shown in FIG. 11a.

If there is activation from the central management device CQ, an error will occur, but if there is no activation, then the department data such as the department code and section code input by the operation in 1) above will be set in the collected data storage area 50. After setting the setting data, the number of blocks of the setting data is set in the block counter BC. After this,
When the above operation (I[) is performed, it is first determined whether or not there is activation from the central management device CQ according to the flowchart shown in FIG. 11b. If there is an activation from the central management unit CQ, an error will occur, but if there is no activation, then the department setting command 2201 is set in the command register CR, the business command reception flag GKF is set,
After setting the parent activation flag MF, the [F
] Proceed to. Therefore, since the subsequent processing is performed according to FIG. 9, the setting work is performed in the same manner as when starting from the central management device CQ. On the other hand, from parent ECRMEO-MEO to child E
When collecting data stored in CRSEOl~SEnn, in the parent ECRMEO-MEn, a register designation text for specifying the terminal from which data is to be collected is set in advance in the designated register table memory 48 of the RAM 26 by key operations on the keyboard 23. After, deposit/cash key 3
Press 6.

Then, the parent ECR MEO-MEn first determines whether or not it has been activated by the central management device CQ, according to the flowchart shown in FIG. If there is a start from the central control unit CQ, an error will occur, but if there is no, then set the full inspection work command W36Ol in the command register CR, set the work command reception flag GKF, and set the parent start flag MF. After setting the [
Proceed to F]. Therefore, since the processing is thereafter performed according to FIG. 9, the inspection work is performed in the same manner as when starting from the central management device CQ. In this way, child ECRMEOL~ME
Settings and inspections for nn are carried out by the central management unit CQ.
In addition to starting from the parent ECRMEO-MEn, this can also be done from the parent ECRMEO-MEn.

By the way, for example, the data collected from the child ECRSEOl to SEln by activation from the central management device CQ is
Suppose that an abnormality occurs in the central management unit CQ and data transmission becomes impossible at the stage when data is collected in CRMEO-MEn.If the collection task is a settlement task, the child ECRSEOL~
Since the SEnn data is cleared, post-processing becomes extremely troublesome.

In such a case, in the parent ECRMEO-MEn, first enter the program selection data using the number keys 31, for example, press the "8" key, and then press the deposit/total key 42. Then, the parent ECR MEO to MEO first determine whether or not they have been activated by the central management device CQ, according to the flowchart shown in FIG. If there is an activation from the central management device CQ, an error occurs, but if there is no activation, it is then determined whether the collection task has been completed by even one device. Here, if the collection task has been completed by even one printer, the collection data stored in the addition data storage area 50, that is, the settlement data, is printed out by the printer 28 on the condition that the task is a settlement task. Therefore, even if data transmission to the central control unit CQ becomes impossible during collection of payment data, the payment data collected in the parent ECRMEO-MEn can be forcibly printed out by key operation on the parent ECRMEO-MEn. Therefore, post-processing in the event of an abnormality can be performed easily and in a short time. In the above description, the child ECRSEO1 to SEnO and the parent ECRMEO- set in the designated register table memory 48 by the register designation text sent from the central management device CQ or the register designation text input from the keyboard 23 are described as follows.
Although we have explained the case where transmission work is performed for MEn, for example, when a certain function key is not pressed, the child E set in the register table memory 47 is always
CRSEOl~SEnO and parent ECRMEO-MEn
Transmission services are now being carried out for Therefore, depending on whether or not the function key is operated, it is possible to easily select whether to target all ECRs or only a designated ECR. Also, parent E
While the CRMEO-MEn is transmitting data with the children ECRSEOl to SEnO, the register number corresponding to the data in the address register AR, that is, the register number of the child ECRSEOl to SEnl whose data is currently being transmitted, is sent to the central management unit CQ. It is displayed on the display 4. Therefore, the operator can check which child ECRSEO1 to SEnO is currently transmitting data from the display on the display 4. In addition, although ECR was used as a relay device in the said Example, it does not need to be ECR. According to the present invention, when an abnormality such as a power outage occurs in a relay device during a transmission operation, when the relay device receives a data transmission operation command that is the same as the operation command before the abnormality occurs from the central management device after the power is restored. Since the transmission processing data up to the time before the abnormality occurs is transmitted to the central management device, there is no need to perform the transmission operation from the beginning as in the past, and therefore, even if an abnormality occurs during the transmission operation, the transmission processing time will be reduced. Loss can be eliminated.

[Brief explanation of drawings]

The figures show one embodiment of the present invention; Fig. 1 is a block diagram showing the entire system, Fig. 2 is a block diagram showing the circuit configuration of the central management unit, and Fig. 3 is a front view showing the keyboard thereof. , Fig. 4 is a block diagram showing the circuit configuration of the parent ECR, Fig. 5 is a front view showing its keyboard, Fig. 6 is an explanatory diagram showing the contents of its RAM, and Fig. 7 shows the circuit configuration of the child ECR. Figure 8 is a front view showing the keyboard, Figures 9A, b, and c are flowcharts showing the main routine in the parent ECR, and Figures 10A and b are the parent ECR.
11A and 11b are flowcharts based on setting operations in the parent ECR, FIG. 12 is a flowchart based on inspection operations in the parent ECR, and FIG. This is a flowchart based on a printout operation in ECR.

Claims (1)

[Claims] 1. Connecting a plurality of relay devices to a central management device,
Each relay device has multiple cash registers (hereinafter referred to as E).
It is called CR. ), and when the relay device receives a data transmission operation command from the central management device, it performs a data transmission operation with the ECR connected to the relay device based on the received data transmission operation command. , and in a system for transmitting transmission processing data to the central management device, each of the relay devices includes a business command storage means for storing a data transmission business command received from the central management device, and an abnormality during the data transmission business is stored. an abnormal state storage means; when this abnormal state storage means receives a data transmission work command identical to the command stored in the work command storage means from the central management device in a state in which the abnormality has been stored; A product sales data processing system, characterized in that the product sales data processing system is provided with means for instructing to transmit the data to the central management device.