JPH0137916B2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a remote control device.

Conventionally, this type of remote control device has been constructed as shown in FIGS. 1 and 2, in which a main operation panel 1 and a plurality of terminal devices 2 are connected via a pair of signal lines 3. Control data D _C is sequentially called from the operation panel 1 to the terminals 2 and sent to the called terminals 2.
is transmitted, and the terminal device 2 drives the output device 6 such as the load control relay 4 and the logic circuit 5 based on the control data _DC , and the operation of the output device 6 is transmitted from the called terminal device 2 to the main operation panel 1. Monitoring data D _B indicating the status was sent back. Figure 3a shows the transmission signal V _S transmitted from the main operation panel 1 to the terminal 2, and Figure 3 b shows the return signal V _B sent back from the terminal 2 to the main operation panel 1. Signal V _S
is composed of a start synchronization signal S, address data D _A , control data D _C , and return waiting signal W. The reception/reply circuit 2 a of the terminal device 2 receives this transmission signal V _S and determines its own unique address. When the matching address data D _A is received, that is, when the called terminal device 2 becomes the called terminal device 2, it takes in the control data D _C following the address data D _A and outputs it to the output terminal O ₁ ,
_O2 ... _ON is outputted to drive the output device 6. On the other hand, monitoring data D _B indicating the operating status of the output device 6 is input to the monitoring input terminals I ₁ , I ₂ , ... _IN of the reception/reply circuit 2a, and this monitoring data D _B is returned to the main operation panel 1. The return signal V _B is sent during the return standby period T _W set by the return standby signal W. By the way, in such a conventional example, the output device 6 is a transistor.
In the case of a load control relay driven by Q ₁ , as shown in Figure 2, the reception/reply circuit 2a
Circuit power (+V _C ) is applied to the monitoring input terminals I ₁ , I ₂ ... _IN of the load control relay 4 via the auxiliary contact 4b, and data indicating the state of the main contact 4a of the load control relay 4 is applied. was now being entered.
However, in such a conventional example, the time point at which the contacts 4a and 4b of the load control relay 4 are reversed is 10 msec from the time point t ₀ when the control data D _C of the transmission signal V _S is received, as shown in FIG. ~several 10 msec
If the delay time t ₁ is reached and the return waiting period _TW is set short (for example, 5 msec) to increase the response speed of the remote control device, the output device 6
Due to the slow response speed, the monitoring data D _B returned to the main operation panel 1 with the return signal V _B at the time of this call.
indicates the operating state of the load control relay 4 driven based on the control data D _C transmitted at the time of the previous call. Therefore, the operating state of the load control relay 4 had to be confirmed by checking the monitoring data D _B sent back by the return signal V _B at the next call. On the other hand, when the output device 6 is a logic circuit 5 such as a latch circuit, the operation delay of the logic circuit 5 is negligible (several μsec or less) as shown in FIG. By inputting to the monitoring input terminals I ₁ , I ₂ ... _IN of the reception/reply circuit 2a,
The operating state of the output device 6 can be checked immediately (the output of the logic circuit 5 has changed by the time the monitoring data D _B is returned). Figure 4a shows the transmission signal V _S , Figure b shows the output signal V _O2 of the output terminal O ₂ of the receiving/reply circuit 2a, Figure 4e
is the monitoring data D _B. In this way, the output device 6
If there is a difference in response speed, the monitoring data D _B returned from each terminal 2 with different output devices 6 will have different meanings, and the monitoring data D _B
This has the disadvantage that checking the operating state of the output device 6 is complicated. The present invention aims to solve the above-mentioned drawbacks.

Examples will be described below using figures. FIG. 5 shows an embodiment of the present invention, in which the terminal device 2 receives the monitoring data D _B by the reception/reply circuit 2a (outputs it to the output terminals O ₁ , O ₂ . . . O _N ), and controls the The data switching means 10 is formed by a changeover switch _SW1 that switches between data D _C , that is, input data to the output device 6 and output data from the output device 6, and when the changeover switch _SW1 is switched to the a side. When the switching control terminal OO of the reception/reply circuit 2a
H level is applied to the receiving/replying circuit 2a, and the output data from the output device 6 input to the monitoring input terminals I ₁ , I ₂ , . . . _IN of the reception/reply circuit 2a is returned to the main operation panel 1 as monitoring data _D . On the other hand, when the changeover switch SW ₁ is switched to the b side, the changeover control terminal CO is
level is applied, and control data D _C is latched in a data latch (not shown) in the reception/reply circuit 2a (however, the data latched in this data latch is applied to the output terminals O ₁ , O ₂ . . . O _N ) is sent back to the main operation panel 1 as monitoring data D _B.

In the present embodiment, the terminal device 2 which uses the logic circuit 5 with a fast response speed as the output device 6 sets the changeover switch SW ₁ to the a side and uses the output data from the output device 6 as the monitoring data D _B , and outputs the output data from the output device 6 to the load with a slow response speed. The terminal device 2 using the control relay 4 is a changeover switch.
With SW ₁ set to the b side, the input data to the output device 6 is returned to the main operation panel 1 as monitoring data D _B , and the monitoring data D _B returned from both types of terminal devices 2 is also indicates the operating state of the output device 6 in response to the control data D _C transmitted to the terminal device 2 at the time of this call. Note that in this case, the actual operating state (contact state) of the load control relay 4 will not be checked accurately;
Since the drive signal of the load control relay 4 is checked, the operating state can be grasped with a certain degree of certainty. In addition, if the output devices 6 of each terminal device 2 are all load control relays 4, if the changeover switch SW ₁ is set to the a side, the load control relays 4
Needless to say, data indicating the states of the contacts 4a and 4b is sent back to the main operation panel 1, so that the operating state of the output circuit 6 can be accurately grasped. However, in this case, the operating state will be confirmed at the time of the next call, and will not be immediate.

FIG. 6 shows another embodiment, in which the main operation panel 1
One bit (control data output to the output terminal _ON ) of the multiple bits of control data D _C transmitted from the terminal device 2 to the terminal device 2 is sent to the switching control terminal (CO) of the reception/reply circuit 2a as a data switching signal. The data switching means 10 is formed so as to be inputted, and the data to be returned as the monitoring data D _B can be selected from the main operation panel 1.
This is convenient because the monitoring data D _B of each terminal device 2 disposed at different locations can be switched centrally. FIG. 7 is a diagram schematically showing the operation of the embodiment shown in FIG. Reference numeral 11 in the figure is a return signal generation section.

FIG. 8 shows still another embodiment, in which the start synchronization signal as shown in FIG. 9 is used as the transmission signal V _S.
Interpolated monitoring data switching signal BC after ST
V _S ′ is sent from the main operation panel 1 and received by the terminal 2.
The data switching means 10 is formed by receiving this data switching signal BC in the reply circuit 2a and switching the data returned as the monitoring data D _B. FIG. 10 schematically shows the embodiment shown in FIG.

The present invention is configured as described above, and is provided with a data switching means that allows monitoring data to be freely switched between input data and output data to an output device, so that output devices with different response speeds can be connected to a terminal device. Even when connected, it is possible to select as appropriate whether to use the monitoring data as input data or output data of the output device so that the monitoring data with the same meaning is sent back to the main operation panel. This has the advantage that the operating status of the output device can be easily checked using monitoring data on the main operation panel.Also, if you want to reliably check the operating status of the output device, you can immediately check the output data from the output device. If you want to check the operating status of the output device, all you have to do is send back the input data to the output device as monitoring data, and since you can selectively check the operating status depending on the application, you can use a versatile remote control. Advantageously, a control device can be provided.

[Brief explanation of drawings]

Fig. 1 is a schematic configuration diagram of the conventional example, Fig. 2 is a circuit diagram of the main parts of the same as above, Figs. 3 a, b and Figs. FIG. 6 is a circuit diagram of the main part of the example, FIG. 6 is a circuit diagram of the main part of another embodiment, FIG. 7 is an explanatory diagram of the same operation as above, FIG. FIG. 10 is an explanatory diagram of the same operation. 1 is the main operation panel, 2 is the terminal device, 6 is the output device, 1
0 is data switching means.

Claims (1)

[Claims] 1 Cyclically calls multiple terminals in sequence from the main operation panel, transmits control data to the called terminal, drives the output device based on the control data received by the terminal, and also controls the main operation from the called terminal. In a remote control device configured to return monitoring data indicating the operating state of an output device to an operation panel, data switching means is provided for freely switching the monitoring data between input data to the output device and output data from the output device. A remote control device characterized in that: