Software functions
7-11
Status detail words are in the following format.
The relationship between error flags and data memory is as follows.
Modbus/TCP
Address
Data
15 14
13 12 11
10
9
8
7
6
5
4
3
2
1
0
(Applicable
locations)
⑯
⑮
⑭
⑬
⑫
⑪
⑩
⑨
⑧
⑦
⑥
⑤
④
③
②
①
①
: Unit power supply status (common)
Bit status
Meaning
Slave judgment method
ON
Slave unit voltage drop
Detected level: Voltage after rectification of 15.5V
Recovery level: Voltage after rectification of 16.0V
OFF No
error
②
: Sensing level status (link amplifier, link sensor)
Bit status
Meaning
Slave judgment method
ON
Sensing level drop
Described in separate document
OFF No
error
③
: I/O disconnection (non-isolated linker, non-isolated I/O)
Bit status
Meaning
Slave judgment method
ON I/O
disconnection
Input judgment value: 0.3mA or less is judged as a
disconnection.
Output judgment value: 2mA or less is judged as a
disconnection.
OFF No
error
④
: I/O short-circuit (non-isolated linker, non-isolated I/O)
Bit status
Meaning
Slave judgment method
ON I/O
disconnection
Input (between power source) judgment value: 110mA
or more is judged as a short-circuit.
Output (between signal power source) judgment value:
110mA or more is judged as a short-circuit.
OFF No
error
⑤
: Reserved
⑥
: Voltage drop on I/O power supply side (isolated linker, isolated I/O)
Bit status
Meaning
Slave judgment method
ON
Voltage drop on I/O power
supply side
Detection level: Voltage of 16.0V on I/O power supply
side
Recovery level: Voltage of 16.0V on I/O power supply
side
OFF No
error
⑦
⑯
: Reserved
