JPH0386405U - - Google Patents
Info
- Publication number
- JPH0386405U JPH0386405U JP14838889U JP14838889U JPH0386405U JP H0386405 U JPH0386405 U JP H0386405U JP 14838889 U JP14838889 U JP 14838889U JP 14838889 U JP14838889 U JP 14838889U JP H0386405 U JPH0386405 U JP H0386405U
- Authority
- JP
- Japan
- Prior art keywords
- waiting time
- data link
- master station
- programmable controller
- link unit
- 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
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 1
Landscapes
- Computer And Data Communications (AREA)
- Programmable Controllers (AREA)
- Communication Control (AREA)
Description
第１図〜第４図はこの考案の一実施例によるデ
ータリンクユニツトを示し、第１図は構成図、第
２図は親局の流れを示したフローチヤート、第３
図は待ち時間カウンタと交信との関係を示した図
、第４図は子局の処理の流れを示したフローチヤ
ート、第５図〜第７図は従来のデータリンクユニ
ツトを示し、第５図は構成図、第６図はリンクシ
ステムの接続を示した図、第７図は親局の処理を
流れの示したフローチヤートである。
図において、１１……タイマ装置、１２……割
込み装置、１３……ハンドシエイクフラグである
。なお、図中、同一符号は同一、又は相当部分を
示す。
Figures 1 to 4 show a data link unit according to an embodiment of this invention, with Figure 1 being a configuration diagram, Figure 2 being a flowchart showing the flow of the master station, and Figure 3 being a flow chart showing the flow of the master station.
Figure 4 shows the relationship between the waiting time counter and communication, Figure 4 is a flowchart showing the processing flow of the slave station, Figures 5 to 7 show the conventional data link unit, and Figure 5 shows the relationship between the waiting time counter and communication. 6 is a diagram showing the connection of the link system, and FIG. 7 is a flowchart showing the process flow of the master station. In the figure, 11...timer device, 12... interrupt device, 13... handshake flag. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.
Claims (1)
されたプログラマブルコントローラにおいて、親
局で待ち時間カウンタの記憶エリアと一定時間ご
とに割込みの発生する機能と、待ち時間を変更す
る手段を持ち、また、子局で交信間隔が適切かど
うかをチエツクし、その結果を親局へ知らせる手
段を有したことを特徴とするプログラマブルコン
トローラのデータリンクユニツト。 In a programmable controller consisting of a data link unit and a CPU unit, the master station has a storage area for a waiting time counter, a function to generate an interrupt at regular intervals, and a means to change the waiting time, and the slave station has a communication area. A data link unit of a programmable controller characterized by having means for checking whether the interval is appropriate and notifying the master station of the result.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14838889U JPH0386405U (en) | 1989-12-22 | 1989-12-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14838889U JPH0386405U (en) | 1989-12-22 | 1989-12-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0386405U true JPH0386405U (en) | 1991-09-02 |
Family
ID=31694841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14838889U Pending JPH0386405U (en) | 1989-12-22 | 1989-12-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0386405U (en) |
-
1989
- 1989-12-22 JP JP14838889U patent/JPH0386405U/ja active Pending