JPH0293856U - - Google Patents
Info
- Publication number
- JPH0293856U JPH0293856U JP1989003047U JP304789U JPH0293856U JP H0293856 U JPH0293856 U JP H0293856U JP 1989003047 U JP1989003047 U JP 1989003047U JP 304789 U JP304789 U JP 304789U JP H0293856 U JPH0293856 U JP H0293856U
- Authority
- JP
- Japan
- Prior art keywords
- response signal
- communication line
- control
- communication lines
- time
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000012544 monitoring process Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Small-Scale Networks (AREA)
- Maintenance And Management Of Digital Transmission (AREA)
- Selective Calling Equipment (AREA)
Description
第１図は本考案の一実施例を示すブロツク図で
ある。
１……中央処理装置、２，３……通信回線、４
１〜４ｎ，５１〜５ｎ……制御部、６１〜６ｎ…
…被制御機器、７……回線モニタ、８１〜８ｎ…
…通信回線切替部。
FIG. 1 is a block diagram showing one embodiment of the present invention. 1...Central processing unit, 2, 3...Communication line, 4
1 to 4 n , 5 1 to 5 n ... control section, 6 1 to 6 n ...
...Controlled equipment, 7... Line monitor, 8 1 to 8 n ...
...Communication line switching section.
Claims (1)
れる制御情報を伝達するための二系統の通信回線
と、前記通信回線の各々にマルチドロツプ式にて
接続される少なくとも１台の制御部とを有し、二
系統の通信回線に同一制御情報を同時に乗せるよ
うに構成された自動番組制御装置において、 それぞれの通信回線に接続される各制御部に対
し、一定周期で動作状態が良好か否かを判定する
ためのチエツク信号を出力する手段と、 各制御部が前記チエツク信号に対する応答信号
を回線に出力する手段と、 前記応答信号がチエツク信号を出力してから一
定時間内に返つてくるか否かを監視し一定時間内
に応答信号が返つてこない場合もう一方の通信回
線の系統に自動的に切替える手段とを 有することを特徴とする自動番組制御装置。[Claims for Utility Model Registration] A central processing unit, two communication lines for transmitting control information output from the central processing unit, and at least one communication line connected to each of the communication lines in a multi-drop manner. In an automatic program control device that has two control units and is configured to transmit the same control information to two communication lines at the same time, the control unit operates at a constant cycle for each control unit connected to each communication line. means for outputting a check signal for determining whether the state is good; means for each control section to output a response signal to the check signal to the line; An automatic program control device characterized by having means for monitoring whether a response signal is returned within a certain period of time and automatically switching to another communication line system if a response signal is not returned within a certain period of time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989003047U JPH0293856U (en) | 1989-01-13 | 1989-01-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989003047U JPH0293856U (en) | 1989-01-13 | 1989-01-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0293856U true JPH0293856U (en) | 1990-07-25 |
Family
ID=31204341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989003047U Pending JPH0293856U (en) | 1989-01-13 | 1989-01-13 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0293856U (en) |
-
1989
- 1989-01-13 JP JP1989003047U patent/JPH0293856U/ja active Pending