M800/M80/E80 Series Maintenance Manual
4 Failure Diagnosis
134
IB-1501273-F
Other than CC-Link IE Field communication:
(*1) The data can not be cleared by turning the power OFF. For details for clearing data, refer to "4.14.2 Diagnosis Com-
mand".
(1) Check the number of times that packet data has been transmitted and received. When the number does not increase,
some cables might be disconnected.
(Note) When CC-Link IE communication is made, check the number of times that the data has been received only.
(2) Check the number of times that errors have occurred in packet transmission and packet reception. When the number
is increasing, noise might occur.
Check the following items.
The device which generates noise does not exist.
Preventive measure for noises (e.g. Ethernet cable is clamped) is done.
The Ethernet cable is not deteriorated.
(Note 1) Measures for preventing noise (e.g. the Ethernet cable is clamped) is taken.
(Note 2) Regardless of the noise influences the number may increase by a small amount by turning the power ON/
OFF or by connection or disconnection of the Ethernet cable.
Device
(EXT1/EXT3)
Device
(EXT2/EXT4)
Details
SD1133 to SD1134 SD1633 to SD1634 The number of times that packet data has been transmitted (4 bytes)
(It is cleared by turning the power OFF.)
SD1135 to SD1136 SD1635 to SD1636 The number of times that packet data has been transmitted (4 bytes)
(The cumulative number until it is cleared) (*1)
SD1137 to SD1138 SD1637 to SD1638 The number of times that packet data has been received (4 bytes)
(It is cleared by turning the power OFF.)
SD1139 to SD1140 SD1639 to SD1640 The number of times that packet data has been received (4 bytes)
(The cumulative number until it is cleared) (*1)
SD1141 to SD1142 SD1641 to SD1642 The number of times that errors have occurred in packet transmission
(4 bytes) (It is cleared by turning the power OFF.)
SD1143 to SD1144 SD1643 to SD1644 The number of times that errors have occurred in packet transmission
(4 bytes) (The cumulative number until it is cleared) (*1)
SD1145 to SD1146 SD1645 to SD1646 The number of times that errors have occurred in packet reception (4 bytes)
(It is cleared by turning the power OFF.)
SD1147 to SD1148 SD1647 to SD1648 The number of times that errors have occurred in packet reception (4 bytes)
(The cumulative number until it is cleared) (*1)
SD1149 to SD1163 SD1649 to SD1663 Reserved
SD1164 to SD1182 SD1664 to SD1682 The function of each device is different depending on the protocol.
For details, refer to "4.14.1.2 Protocol-Specific Information".
Diagnosis using the statistical information of packet transmission and reception
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