JPH01151301U - - Google Patents
Info
- Publication number
- JPH01151301U JPH01151301U JP1988045862U JP4586288U JPH01151301U JP H01151301 U JPH01151301 U JP H01151301U JP 1988045862 U JP1988045862 U JP 1988045862U JP 4586288 U JP4586288 U JP 4586288U JP H01151301 U JPH01151301 U JP H01151301U
- Authority
- JP
- Japan
- Prior art keywords
- data link
- link unit
- data
- programmable controller
- stations
- 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
- 230000005540 biological transmission Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Programmable Controllers (AREA)
- Maintenance And Management Of Digital Transmission (AREA)
- Safety Devices In Control Systems (AREA)
Description
第１図はこの考案によるＰＣとデータリンクユ
ニツトのブロツク図及び他局のデータリンクユニ
ツトとの接続図、第２図は従来のＰＣとデータリ
ンクユニツトのブロツク図及び他局のデータリン
クユニツトとの接続図である。図において、１は
ＰＣ本体、２はデータリンクユニツト、１８はデ
ータリンクユニツトのデータ送信部１２を制御す
るためのＰＣからの出力信号である。なお、図中
同一符号は同一、又は相当部分を示す。
Figure 1 is a block diagram of a PC and data link unit according to this invention and a connection diagram with data link units of other stations. Figure 2 is a block diagram of a conventional PC and data link unit and a diagram of connections with data link units of other stations. It is a connection diagram. In the figure, 1 is a PC main body, 2 is a data link unit, and 18 is an output signal from the PC for controlling the data transmission section 12 of the data link unit. Note that the same reference numerals in the figures indicate the same or equivalent parts.
Claims (1)
接続して成るプログラマブルコントローラにおい
て、上記データリンクユニツトの故障を所定時間
内における割込信号の有無により検出し、データ
リンクユニツトのデータ送信部を制御するととも
に、データリンクユニツトから他局のデータリン
クユニツトへ送信されるデータをＬＯＷ又はＨｉ
ｇｈレベルにクランプすることを特徴とするプロ
グラマブルコントローラ。 In a programmable controller comprising a plurality of stations having a data link unit and a main body connected, a failure of the data link unit is detected by the presence or absence of an interrupt signal within a predetermined time, and the data transmission section of the data link unit is controlled. The data sent from the data link unit to the data link unit of another station is set to LOW or HIGH.
A programmable controller characterized by clamping at the GH level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988045862U JPH01151301U (en) | 1988-04-05 | 1988-04-05 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988045862U JPH01151301U (en) | 1988-04-05 | 1988-04-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01151301U true JPH01151301U (en) | 1989-10-19 |
Family
ID=31272156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988045862U Pending JPH01151301U (en) | 1988-04-05 | 1988-04-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01151301U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04296904A (en) * | 1991-03-12 | 1992-10-21 | Mitsubishi Electric Corp | Programmable controller |
-
1988
- 1988-04-05 JP JP1988045862U patent/JPH01151301U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04296904A (en) * | 1991-03-12 | 1992-10-21 | Mitsubishi Electric Corp | Programmable controller |
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