Conducting Ping Test To Check Qj71Mt91 Connection - Mitsubishi QJ71MT91 User Manual

11 TROUBLESHOOTING

11.5 Conducting PING Test to Check QJ71MT91 Connection

Address
0FE0
H
Communication time check
(4064)
0FE1
H
Transmission count
(4065)
0FE2 to 0FE3
H H
IP address
(4066 to 4067)
0FE4
H
(4068)
PING test
0FE5 execution
H
(4069) results
0FE6
H
(4070)
0FE7
H
(4071)
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This section explains how to conduct a PING test in the QJ71MT91.
Method
From GX Configurator-MB
From sequence program
(1) PING test
(a) A PING test checks whether the other QJ71MT91 or MODBUS
exists or not on Ethernet (same subnet address) where the QJ71MT91 is
connected, or if a target device (personal computer) having the specified IP
address exists or not.
(b) Perform a PING test to check the following.
1) Whether the QJ71MT91 is correctly connected to the other device on the
line.
2) Whether the basic parameter setting of the QJ71MT91 is correct.
(2) Buffer memory addresses used for PING test
The following buffer memory addresses are used for a PING test.
Parameter Name
Execution result
Total packet
transmission count
Success count
Failure count
*1: Set the value that satisfies the following conditions.
Condition 1: The IP address class is any of A, B and C.
Condition 2: The host address bits are not all "0" or all "1".
Setting
Specify the waiting time for
completion of the PING test.
Set time = set value 500ms
Specify the number of
transmissions.
Specify the IP address of the
PING test target device.
• The execution result of the
PING test is stored.
• When completed with an
error, the error code is stored.
(Refer to Section 11.3.3)
The total packet transmission
count, success count and
failure count for the PING test
execution are stored.
Reference Section
Section 11.5.1
Section 11.5.2
Setting Range
2 to 60
1 to 10
Refer to *1
0000 : Normal completion
H
0001 to : Error completion
H
(Error code)
MELSEC-Q
/CP device
R
Default
2
4
00000000
H
0000
H
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