JPS5985502A - Programmable controller - Google Patents

Abstract

PURPOSE:To ensure a safe operation even though an I/O unit is changed at the side of a remote controller by delivering the contents of a register storage region with no change when a mode setting means of a CPU is set in an I/O map register holding mode. CONSTITUTION:A mode setting switch 24 is set previously in a register holding mode when a power supply is applied again after the unit of a channel CH6 is removed with a remote device 5. Under such conditions, a PC register remote I/O map of a storage region 23 is kept as it is although a new RS production I/O map is transmitted to a PCCPU2 from an RS unit 7 via an MS unit 4. Therefore a PC register remote map obtained before the cut-off of the power supply is stored in a storage region 72. This is due to a channel constitution of the device 5, and therefore an operation is carried out as if the unit of the channel CH6 that is removed at the time of cut-off existed. Furthermore no shift is caused to channels CH7-CH12, and a normal operation is secured.

Description

[Detailed Description of the Invention] (a) Field of the Invention This invention relates to a programmable controller, a special CPU,
Main unit including I/, (input/output) unit J ■ Multiple remote devices with all 4 units are installed in remote locations separated from the device, and the operation of these remote devices, including the compression units, is controlled by the main device's CPU. About the line now programmable controller.

(b) Storage of the invention Generally, when a programmable controller (hereinafter referred to as PC) system is installed in a control system, some of the 10 units often have to be separated from the main unit due to local conditions. be.

Figure 1 shows multiple remote locations separated from the main unit. 1 is a block diagram of a PC synutem equipped with a remote device having a unit; FIG. In the figure, 1 is a main unit, and this main unit 1 has Fi, a CPU 2 of a PC. A plurality of remote units 5 and remote control station units (hereinafter referred to as P/IS units) 4 are built-in. 5 is a remote device provided apart from the main device 1, and includes a plurality of Vs. It incorporates a unit 6 and a remote I10 remote control station (hereinafter referred to as an RS unit) 7. The valley units of the main device 1 and the remote device M5 are respectively installed in channel slots. In this PC system, R
The S unit 7 imports or remaps the input/output data of each of the four units 6 of the remote device 5 (distinguishes the input/output of each compression unit, its scale, that is, how many points it consists of, and which slot it is in). The input/output data and the map are sent to the MS unit 4 via the transmission line 8, and the PC, CPU 2 transmits each information of each remote device 5 to the unit 6. MS
The data is sent and received all at once via the unit 4, and the operation is controlled. In such a PC system, the main unit 1 and the remote device 5 are connected to separate AC power supplies because they are located far apart from each other.

Therefore, for example, some abnormality occurs on the remote device 5 side,
Assuming that the power to the remote device 5 is turned off, the arrangement of the four units 6 is changed to remove the abnormality, and the power to the remote device 5 is then restored, the PC However, since the PC system is not operated by the user program written in the cPU 2, there may be a discrepancy between the actual unit configuration of the remote device 5 and the registered map of the CPU 2, which may cause unexpected inconvenience to the control system. There was a risk that an incident would occur. therefore.

On the remote device 5 side. A failure occurred in unit 6 and the failure 1
/ Even when operating a PC system with only the unit removed, it is necessary to change the user program.
If the program was not changed, there was a problem that the PC system could not be operated until the faulty unit was repaired.

(c) Purpose of the Invention The purpose of the present invention is to solve the above-mentioned problems, and to provide a PC that can be operated (~ obtained) even if the four-unit configuration of the remote device is changed, regardless of the change. be.

) organization and effect of the invention; In order to achieve the above object, the present invention provides a PC.

CPU! :, multiple units and these. Remote/control station (
MS unit), multiple units, and a remote control station (MS unit) that manages these units.
RS unit) included.

In addition to the remote device connected to the main unit via a transmission path, the remote control station 4 includes means for creating a cooperative map of the units of the remote device; a first storage means having an area for storing the CPUK-registered M11% map and an area for storing the entire CPUK-registered M11% map, and a V stored in the registered storage area of the first storage means. The remote control station is provided with a means for completely operating the remote device based on the map, and the remote control station stores a reduced map created by the remote reduced remote control station and I and 6 maps registered in the CPU. a second storage means having an area for storing the map, and a second storage means having an area for storing all the maps from the control station in the four remote locations, and sending this false map to the CPU;
and control means for receiving a registered work% map from the CPU and storing it in its own registered 4 map storage area and sending it to the remote fake remote control station; A setting means for selectively setting a creation mode and a registration holding mode, a storage area for registering and storing the reduced map of the remote Vo control station, and a setting means V. When the new map creation mode is set, a new 4-map is registered and updated in the registered storage area and the registered data is output, and the setting means is set to the 4-map registration retention mode. 1. All control means are provided for outputting the contents of the registered storage area unchanged.

The PCK aspect of this invention is to set the setting means provided in the CPU of the one-way device to the registration holding mode. . Even if a change occurs to the map, the registered fake map of the PC or CPU will remain in the changed state of 011, and this registered fake map will pass through the remote 4 control stations. The information is transmitted to the remote control station, and the remote fake remote control station is operated based on the transmitted previous registration map.
Even if you change the configuration of the four units without permission from the main unit, you will not be able to learn what the impact will be (the PC system can be operated safely).

(E) Description of Examples The present invention will be described in further detail below with reference to Examples.

The basic configuration of the embodiment PC system is as shown in FIG. 1, but the PC-CPU 2 has a built-in memory 20 having a map shown in FIG. 2. Of this memory 20,
21 is the I/2. of all 4 units up to channel CHD Kara CH14. 1/information storage area for storing information,
For each channel, ■ “How many points does it consist of? 2. Data,”
■゛ゞゞInput power?1. identification data, and input/output data are stored respectively. Note that 22 temporarily records four maps (referred to as R8 created false maps) of four remote units 58 each created by the RS unit 7. This is an area where 2 B is a PC * body-mounted device Each I of the remote device 5 to be recorded
This is an area for storing the 47-number (registered remote V. map) of the /unit.

FIG. 6 shows the PC system shown in FIG. 1.

FIG. 1 is a block diagram schematically showing an extracted remote erotic part according to the present invention. pc, CPU2 has R8 creation% map storage area 22. In addition to the memory 20 having the PC registration map storage area 23, there is also
A mode setting switch 24 is provided for selecting and specifying a new map registration mode and a registered reduced map retention mode.

MS unit 4 has H, R8 creation association map memory entire area 41
．． Map registration flag 42. A memory 40 including a registered remote map storage area 4 and a map registration flag 44 is provided. The map registration flag 42 is set to 1/1 of the remote device 5 created by the RS unit 7. The map is transmitted from RS unit 7, and R8 creates map record 1.
．． This is a flag that is set when storage is completed in the gray area 41, and the map establishment flag 44 is stored in the registered remote %pine';'Ml:ba area 43 from the PC or CPU 2 via the data bus, and when the transfer is completed. This is a flag that can be set.

The RS unit 7 stores the % map of the unit 6 to be created by this RS unit.The RS unit 7 stores the % map of the unit 6 created by this RS unit. Storage area 7 for storing maps
2. The memory 70 includes 2. Of course, the MS unit 4 and the RS unit 7 are equipped with a CPU for control.

Next//CPC, CPU2. The entire processing flow of the MS unit 4 and the RS unit 7 will be explained with reference to FIGS. 4 to 6.

FIG. 4 is a processing flow of the PC-CPU 2.

When the power of the main unit 1 is turned on [step ST (hereinafter abbreviated as ST-j) 1], the PC and CPU 2 are activated! It is determined whether the 10 map is a new registration (ST2), and -1: If the mode setting switch 24 is set to new registration, create a system 4 map from I10 unit 3 and channel CHD of channel B to channel CH14. (ST3). First, the channel CHO absorbs the signal, and then every time it is absorbed, the channel) Vf is updated (ST4) L
, determine whether or not it is the maximum channel for each absorption channel (ST
5). Until the absorption of the map signal reaches the maximum channel, the determination is No.
Determine whether it is necessary for the client 9xMS unit 4 (ST6
). Sloan) K: If the MS unit is not included, S
T4 to ST6 are repeated nine times, and the unit 6 of the main unit 1
map signals are absorbed and stored in the storage area 21.

If the MS unit 4 is included in the null that is trying to absorb the map signal, the judgment in ST6 is YES.Next, a built-in timer (not shown) is started (ST7).
. Then, it is checked whether the map registration flag 42 of the MS unit 4 is set (ST8). If the map registration flag 42 is not set here, the map registration flag 42 will wait for setting until the timer mini time is over (ST7.ST8, 5T
9). If the map registration flag 42 is not set even if the timer times out, the map is not created correctly in the RS unit 7, or the R8 creation percentage is not set.
Since the map is not normally transmitted to the MS unit 4, remote false abnormality processing is performed (ST10).

Is the map registration flag 42 set in ST8?
Alternatively, if set during standby, an R8 creation % map request is sent to the MS unit 4 (5T11), and the R8 creation is created from the MS unit 4. When Mappu arrives (ST12
), performs a transmission error check on the four maps created by R8 (ST13).

If there are no errors, set the timer.

Remotely register the transmitted R8 created Vo map from the R8 creation association map report/city area 22. Fake map record i:!
Mark it as a newly created remote fake map in area 23, and send the registered remote fake map to MS.
Transfer to unit 4 (ST14.5T15). At the end of the transfer, all map establishment flags 44 of the MS unit 4 are set (ST16).

If the R8 bill map does not arrive at 5T12.

If a transmission error is detected in 5T14, wait until the timer times up, and perform remote 4 abnormality processing when the timer times up (ST9,
5T10).

After setting the map establishment flag 44 at 5T16, it becomes 1 again.
I7. of the next slot in which the MS unit 4 of the main unit 1 is installed. Unit 6 sequentially absorbs map signals (ST4). When absorption of the map signal is completed for % units of all channels, the judgment in ST5 as to whether it is the maximum channel becomes YES, and then operation starts and control operations such as input update and output update are performed (57179) Meanwhile, in ST2 , If the mode setting switch 24 is set to the registration hold mode, check whether the MS unit 4 is installed in the slot of the main unit 1 (5T18), the MS Uni-Soto 4 is not installed. If so, full operation is started (ST17).

On the other hand, if MS unit 4 is installed.

The remote fake map stored in the PC registration% map storage area 23 is sent to the MS unit 4 (5T19), and operation is started (ST17).

FIG. 5 is a processing flow of the MS unit 4.

When the MS unit 4 is powered on (ST20
), performs an initial reset such as setting the map registration flag 42 to O (ST21), and sends the R8 creation Vo map request to R.
The signal is sent to the S unit 7 and a built-in timer is started (ST22). And RS unit 7 5RS
Check whether the map has arrived (ST23
), the 1st case that has not arrived is .

Wait until the timer times up (ST2
4) If the RS map does not arrive even after time-up, remote false abnormality processing is performed (ST25).

At 5T23, create R8 from RS unit 7. When the map arrives, check for transmission errors 5 (5T26),
If there is no error (ST27), the timer is reset, the transmitted R8l10 map is stored in the R8 creation/romap storage area 41 (ST28), and the map registration flag 42 is set (ST29).

Next, PC-CPU2 waits until there is a R8l10 map request (5T30), and when there is an RS I/map request, it creates R8 stored in the storage area 41 and transfers the map fPc-CPU:IMc transfer step, 6 (ST31). ).

After that, wait for the PC-CPU2 and PC-registered remote map to be transferred, and then wait for the registered remote map to be transferred.
When transferred from the c-CPU 2, the registered remote map is stored in the entire storage area 43 (ST32). Next, it is checked whether the map establishment flag 44 is set (ST33).

Registration remote V from PC-CPU2. When the map Ω transfer is completed, this 7lag 44 is set, so 5T33
The determination is YES, and the primary storage area 45 (DPC-q
Mort V to record. Transfer the map to RS unit 7 (S
T34). Thereafter, when the PC system starts operating, data is transferred between the RS unit 7, the PC, and the CPU 2 (ST35).

FIG. 6 is a diagram showing the processing flow of the RS unit 7.

The RS unit 7 is turned on when its power is turned on (ST40
), performs an initial reset such as clearing each memory area of the memory 7o (ST41), and then absorbs the signal from the unit 6 to create an RS map,
It is stored in the storage area 71 (ST42). Then, it waits until an R8l10 map transfer request is received from MS unit 4 (ST43.5T44).

When there is a transfer request from MS unit l-4, the storage area 71
Transfer the fake map created by R8 to MS unit 4 (ST
45). Next, MS Units) 4 color PC registration remote 1-
Wait for the V map to be transferred and start a timer (ST46). 5T47], and if the "C registered FBS map has not arrived by the time the timer expires, abnormality processing is performed (ST48, 5T49).

When the PC registration map arrives from MS unit 4 at 5T47, a transmission error check is performed (ST50°5T51).
),
2KPC registration remote V. Memorize the map (ST52
). After that, the PC stored in the storage area 72
C Registration Momo - Start operation according to the 1% map.

That is, data transfer for MS units 4 and 4 units 6 is started (see Figures 7 to 10 in input numbers in s7).
The specific operation of the above-mentioned PC system will be explained with reference to the drawings.

Now, in the PC system shown in Figure 1, the PC/CPU
The mode setting switch 24 of No. 2 is set to the new registration mode, and the AC power of the main device 1 and the remote device 5 is turned on. Input/output of each channel at that time (IN/0UT
) are as shown in Figure 7. Among these I10 maps of the main device 1 and the remote device 5, the false map of the remote device 5 is created by the RS unit and stored in the storage area 71, and these 4 maps created by R8 are used for the transmission path 8. It is transmitted to the PC-CPU 2 via the storage area 41 of the MS unit 4, and the R8 created fake map is newly registered in the storage area 23 as a PC-registered remote cooperation map. Then, the data is transmitted again from the storage area 43 of the MS unit 4 to the RS unit 7 via the transmission line 8.
The above PCC registered momo-I7 map is transmitted to the storage area 72 and recorded in 1. I will.

9. During operation in the state shown in FIG. 7, a failure occurred in the out unit of channel v CH6 for some reason, so the AC power supply to the remote device 5 was cut off.9. Assume that all of the ou L units inserted in the nulls of channel CH6 are lost. The input/output status of each channel of the PC sinutem at that time is as shown in FIG. 8, with channel CH6 being empty.

Also, the channel CH configuration seen from the RS unit 7 has the second Out unit removed, so the channel)'f
a Id CH6 and subsequent channels are shifted to the right by 1 CH as shown in FIG. When the power to the remote device 5 is restored in this state, a new reduced map of the remote device 5 is created in the RS unit 7, and its channel) V configuration is changed to channel) v.
CH5~7CH of channel CHII9. Moreover, channels after /Ly6CH are shifted to the right by 1 cH compared to before the change, so normal operation with the program written in #rJK is impossible after the AC power is turned off.

However, if the mode setting switch 24 is set to the registration hold mode when the power is turned on again, the RS unit 7 passes through the transmission path 8 to the MS unit 4, and then from the MS unit 4 to the PC via the υ data link. Even if the new R8 created 4 map is transmitted to the CPU 2, the PC registered remote map in the storage area 23 of the PC and CPU 2 is not updated and remains as it was before the power was turned off. This unupdated PC registration remote map 1 to I10 is transferred to the MS unit 4 and stored in the storage area 45, and further transmitted to the RS unit 7 via the transmission path 8, The map is written/uniqued in the write/unique area 72. This registered PC registration remote control is the 7th
The channel configuration of the remote device 5 in the figure is υ, therefore the AC
The out unit of channel)vCH6, which was removed when the power was cut off, is operated as if it still existed, and there is no deviation in channels)vCH7...CH12, and normal operation is performed. .

On the other hand, if the program of the PC, CPU 2 is changed as the percentage unit configuration of all remote devices 5 is as shown in FIG. 9, by setting the mode setting switch 24 of the PC, CPU 2 to the new registration mode side , PC, CPU
The storage area 23 of 2 stores the 10 new R8 creation maps transmitted from the RS unit 7 as motor maps to be recorded in PCy, and further stores them as motor maps to be recorded in PCy.
Map MS unit 4. The stored P is transmitted to the RS unit 7 via the transmission line 8 and stored in the storage area 72.
C. Operation is started using the registered remote erotic map.

In this case, PC' returned from PC-C and PU2
The W record remote I10 map matches the R8 created map, and normal operation is carried out with the PC system configuration shown in FIG.

Note that in the examples shown in FIGS. 7 to 10, the channel) vCH
Although we have given an example of removing only unit No. 6, it is of course possible to remove not only one channel but several channels, or conversely, remove an empty channel slot I/'o.
Needless to say, changes such as installing more units can be considered in the same way.

[Brief explanation of the drawing]

Figure 1 is a configuration diagram of a PC system that has a remote device in addition to the two main units, and Figure 2 is a PC system configuration diagram of the main unit of the same PC system.
FIG. 3 is a diagram showing the storage area arrangement of the memory built into the CPU, and FIG. PC-C shown in Figure 3
A diagram showing the processing flow of the PU, Figure 5 is the MS shown in Figure 5.
Figure 6 is a diagram showing the processing flow of the RS unit shown in Figure 1. Figure 7 is a diagram showing the processing flow of the RS unit shown in Figure 1.
A diagram showing an example in which a unit 1- or an out unit is inserted. FIG. 8 shows a channel slot of the remote device shown in FIG. A diagram showing an example of the state in which the unit is removed, Figure 9 (
is the percentage recognized by the RS unit in the state shown in Figure 8.
Channel) Diagram showing V division composition / 10th - Construction drawing is shown in Fig. 8 / P newly registered by 10 configuration
FIG. 2 is a diagram showing a 1/channel configuration of the C system. 1: Main unit, 2: PC-CPU. 3; V of main unit. Unit 4: Remote % control station unit (MS unit). 5: Remote equipment, 6: Remote equipment equipment/unit. ■ 7: Remote 4 remote control station unit) (RS unit)
, 8: Transmission line, 22/41/71: Created R8. Map storage area. 23/43/72: PC registered fake map storage area, 4
2: Map registration flag, 44: Map establishment flag. Patent applicant Tateishi'i4f Machine Co., Ltd. Agent
Patent Attorney Shigeru Nakamura

Claims (1)

[Claims] (1) A CPU, a plurality of 4 units, and a remote I installed at the same level as these % units.
A main unit including an Ito4 control station, a plurality of filter units, and a remote V that manages these units. (9) creating a 110 map of 4 units of the remote device in the remote fake remote control station including a remote control station and connected to the main unit via a transmission path; 1 has been created, and an area for storing the map and the V registered in the CPUK. A first storage means having an area for storing a map, and means for operating the remote device based on the courtesy map stored in a registered storage area of the first storage means. The remote 4 control station includes a second storage means having an area for storing 4 maps created by the remote control station marked with @ and 4 maps registered in the CPU, and a remote control station marked with @. It receives the fake map from the control station in its own 4-map storage area, while transmitting these 4 maps to the CPU, and receives the registered fake map from the CPU and stores it in its own registered fake map storage area. and a control means for storing and transmitting data to the remote fake remote control station. The CPU includes a setting means for selectively setting a 10-map new creation mode and a registration retention mode, and a setting means for selectively setting a 10 map new creation mode and a registration retention mode, and
The control station is described above. When the storage area for registering and storing maps and the setting means are set to a new fake map creation mode. The setting means is set to the I, 6-map registration holding mode, and the content of the registered storage area is not updated. A programmable controller characterized by comprising a control means for outputting the changed output.