JPH04130555A - Transfer rate measuring device for multidata bus tester - Google Patents

Abstract

PURPOSE:To automatically measure the transfer rate of a message to be transferred on a multidata bus by providing a means detecting a specific command word in the message to be transferred on the multidata bus and a means measuring the detection space of this specific command word. CONSTITUTION:The setting of a C/W (command word) is performed against a host computer 5. This set data is transferred through a CPU part 4 and a communication memory part 3 to a mu program control part 2. The mu program control part 2 performs the check of the designated C/W when monitoring the data on the multidata bus. In the case of the designated C/W, a counter 6 is read, the result is stored in the communication memory part 3, and the counter 6 is reset. This data is transferred through the CPU part 4 to the host computer 5 (personal computer) and displayed on a CRT after converted into real-time data. Thus, since the designation of the C/W and the comparison of the data on the multidata bus is performed like a software, the transfer rate on the arbitrary C/W can be measured.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a rounding transfer rate measuring device for a path monitor function applied to confirming the functions of remote terminals and bus controllers connected to a multiplex data bus.

[Conventional technology]

The path monitor function of a conventional measuring device (hereinafter referred to as a path tester) measures the gap time between all command words (c, 'w). (See Figure 2).

In FIG. 2, t#'i1 is a time indicating the transfer rate of C/W, D/W is a data word, 5/W is a status word, and MSG is a message.

[Problem to be solved by the invention]

Therefore, in order to know the gap time (ie, transfer rate) between a specific C/W, it was necessary to find the sum of the measured gaps.

However, in cases where there are many different transfer rates and a large number of messages for each rate, the manual calculation method described above not only takes a lot of time, but also has the possibility of causing problems such as calculation errors (disadvantages). Camelita.

[Means to solve the problem]

The present invention automatically measures the gap time between detecting a pre-specified υ truth and detecting the same C/W in units of 1μ-〇c when executing the path monitor, and automatically performs the process of displaying it on the CRT. It is characterized by the fact that it is carried out in

[Effect]

In the bus tester of the present invention configured as described above,
The transfer rate of each message transmitted on the multiplex data bus can be automatically measured (verified).

〔Example〕

Hereinafter, the present invention will be explained in detail using FIG. 1. J is a multiplex data bus interface unit that performs signal conversion of the data path, and 2 is a μ program control unit that controls the hardware 1 and 3 using a microprogramming method. 3
2 is a memory section that has a built-in dual port memory and exchanges data between the CPU section 2 and the CPU section 4.

The CPU section 4 of the -q icon stores data sent from the host computer 5 in the computer memory s3 and transfers the data sent from the μ program control section 2 to the host combiator. The host computer 5 provides a man-machine interface with the operator. In the above configuration, first, the operator is connected to the host combiator 5.

Configure C/W.

This setting data a is transferred to the μ program control unit 2 via the CPU unit 4 and the communication memo IJi[l3.
will be forwarded to. When monitoring the data on the μ program control unit 2Fi multiplex data bus, a check is performed to see if it is a specified cape. In the case of the specified C/W, the counter 6 is read, the result is stored in the memory section JK of the community unit 1, and the counter 6 is reset. This data is transferred to the host computer 5 in the figure via the CPU section 4, converted into real-time data, and then displayed on the CRT. Also, C/
Since the designation of W and the comparison with the data on the multiplex data bus are performed by software, the transfer rate for any C/W K can be measured.

〔Effect of the invention〕

As described above, according to the present invention, the transfer rate of any message (C/W) transmitted on a multiplex data bus can be automatically measured (verified).

[Brief explanation of drawings]

FIG. 1 shows a functional program for explaining one embodiment of the present invention. This is a diagram. Figure 2 shows a conventional bus tester Puyagtai was measuring FIG.

Claims (1)

[Claims] A transfer rate measuring device for a multiplex data bus tester, comprising means for detecting a specific command word in a message transmitted on a multiplex data bus, and means for measuring a detection interval of the specific command word. .