JPS55124827A - Failure discrimination system for data transmission system - Google Patents

Failure discrimination system for data transmission system

Info

Publication number
JPS55124827A
JPS55124827A JP3354879A JP3354879A JPS55124827A JP S55124827 A JPS55124827 A JP S55124827A JP 3354879 A JP3354879 A JP 3354879A JP 3354879 A JP3354879 A JP 3354879A JP S55124827 A JPS55124827 A JP S55124827A
Authority
JP
Japan
Prior art keywords
receiver
driver
test signal
data transmission
ram202
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
Application number
JP3354879A
Other languages
Japanese (ja)
Inventor
Seitaro Iwahashi
Satoru Saito
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Omron Corp
Original Assignee
Omron Tateisi Electronics Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Omron Tateisi Electronics Co filed Critical Omron Tateisi Electronics Co
Priority to JP3354879A priority Critical patent/JPS55124827A/en
Publication of JPS55124827A publication Critical patent/JPS55124827A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To discriminate the failure of driver when the test signal and the signal introduced from the second receiver are not in agreement, by preparing the second receiver as the receiver to driver and comparing the test signal given to the driver with the signal introduced from the second receiver.
CONSTITUTION: At first, the contact of the relay 210 connects the driver 11 and the second receiver 30. CPU20 compares the test signal given to the driver 11 with the test signal from the receiver 30. If not in agreement, whether or not the machine number is set to RAM202 is discriminated, but if in agreement, the control signal d is "L". Thus, Tr27 is conductive, the contact of the relay 210 is selected to the first receiver 12, and the second receiver 30 is made inactive. CPU20 sets the machine number to RAM202. Further, CPU20 discriminates whether or not the machine number is set to RAM202, and if not set, it is processed as error.
COPYRIGHT: (C)1980,JPO&Japio
JP3354879A 1979-03-22 1979-03-22 Failure discrimination system for data transmission system Pending JPS55124827A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3354879A JPS55124827A (en) 1979-03-22 1979-03-22 Failure discrimination system for data transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3354879A JPS55124827A (en) 1979-03-22 1979-03-22 Failure discrimination system for data transmission system

Publications (1)

Publication Number Publication Date
JPS55124827A true JPS55124827A (en) 1980-09-26

Family

ID=12389604

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3354879A Pending JPS55124827A (en) 1979-03-22 1979-03-22 Failure discrimination system for data transmission system

Country Status (1)

Country Link
JP (1) JPS55124827A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58103250A (en) * 1981-12-15 1983-06-20 Nec Corp Data communication controller
JPS58146919A (en) * 1982-02-24 1983-09-01 Mitsubishi Electric Corp Output circuit
JPS5912657A (en) * 1982-07-13 1984-01-23 Meidensha Electric Mfg Co Ltd Transmission line protecting system of multidrop type information transmission system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50137637A (en) * 1974-04-19 1975-10-31
JPS5179521A (en) * 1975-01-08 1976-07-10 Hitachi Ltd
JPS51112229A (en) * 1975-03-28 1976-10-04 Hitachi Ltd Power lamp lighting system of terminal processor
JPS5217733A (en) * 1975-07-31 1977-02-09 Fujitsu Ltd Transmission system with interface connection test function

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50137637A (en) * 1974-04-19 1975-10-31
JPS5179521A (en) * 1975-01-08 1976-07-10 Hitachi Ltd
JPS51112229A (en) * 1975-03-28 1976-10-04 Hitachi Ltd Power lamp lighting system of terminal processor
JPS5217733A (en) * 1975-07-31 1977-02-09 Fujitsu Ltd Transmission system with interface connection test function

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58103250A (en) * 1981-12-15 1983-06-20 Nec Corp Data communication controller
JPS58146919A (en) * 1982-02-24 1983-09-01 Mitsubishi Electric Corp Output circuit
JPS6226741B2 (en) * 1982-02-24 1987-06-10 Mitsubishi Electric Corp
JPS5912657A (en) * 1982-07-13 1984-01-23 Meidensha Electric Mfg Co Ltd Transmission line protecting system of multidrop type information transmission system

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